Overvoltage Protection Devices

Siemens AG 2010 Overvoltage Protection Devices /2 Introduction /3 Lightning Arresters, Type 1 /5 Combination Surge Arresters, Type 1 and Type 2 /7 Surge Arresters, Type 2 /11 Surge Arresters, Type 3 /12 Accessories for Surge Arresters /13 Link Rails /14 Configuration /1 Surge Arresters for Measuring and Control Technology Technical Information can be found at www.siemens.com/lowvoltage/support under Product List: - Technical specifications under Entry List: - Updates - Downloads - FAQ - Manuals - Characteristic curves - Certificates and at www.siemens.com/lowvoltage/ configurators - Configurators Siemens LV 10.1 2011

Overvoltage Protection Devices Siemens AG 2010 Introduction Overview Devices Page Field of application Standards Used in Lightning arresters, type 1 /3 With plug-in protective modules for TN-C, TN-S and TT systems Rated voltage 350 V AC for lightning currents from 25 ka to 100 ka. All versions with remote signaling contact. Combination surge arresters, type 1 and type 2 For installation in main distribution boards, upstream or downstream of the counter. /5 With plug-in protective modules for TN-C, TN-S and TT systems. Rated voltage 350 V AC for lightning currents from 25 ka to 100 ka. All versions with remote signaling contact. For installation in main distribution boards downstream of the counter. Non-residential buildings Residential buildings Industry EN 143-11 EN 143-11 /7 With plug-in protective modules for TN-C, TN-S and TT systems Rated voltage 350 V AC, rated discharge surge current 20 ka and discharge surge current 40 ka. For installation in sub-distribution boards. EN 143-11 Surge arresters, type 3 /11 With plug-in protective modules for single-phase and three-phase systems. Rated voltage, single-phase 24 V AC/DC, 0 V, 120 V, 230 V and three-phase 230/400 V AC. For installation as close as possible upstream from the terminal equipment. Accessories for surge arresters /12 Plug-in parts for lightning and surge arresters and through-type terminals for installation. EN 143-11 EN 143-11 Link rails /13 Link rails provide the electrical interconnection of the N conductors, PE conductors or PEN conductors of 1-pole surge arresters, type 2. Configuration /14 Everything you need to know about overvoltage protection. Function, mounting and technical connections. -- Surge arresters for measuring and control technology /1 With plug-in protective modules for measuring and control technology for installation in signal circuits. EN 143-21 -- /2 Siemens LV 10.1 2011

Siemens AG 2010 Overvoltage Protection Devices Lightning arresters, type 1 Overview Lightning arresters type 1 protect low-voltage systems against any overvoltage or high impulse currents that may be triggered by a direct or indirect lightning strike. The protection level is lowered to 1.5 kv by the lightning arrester. The lightning arresters are enclosed and are suitable for installation in the precounter area. All spark gaps are tripped. For this reason, decoupling reactors are no longer required for the installation of overvoltage protection devices. The lightning arresters are tested using a wave-shaped 25 ka to 100 ka lightning impulse current with waveform 10/350 µs. Benefits The rated arrester voltage is a uniform 350 V AC. This increases safety in systems with extended voltage overshoots. All lightning arresters are fitted with a mechanical fault indication, which does not require an extra power supply. This means they can be installed in the precounter area, where electrical plants can be protected particularly effectively. The protective modules are plug-in versions. No dismantling of electrical wires required when replacing the protective modules. When taking insulation measurements, the protective modules are simply removed in order to ensure disconnection from the power supply. All lightning arresters have a remote signaling contact, which signals if the device fails. Technical specifications 5SD7 411-1 5SD7 412-1 5SD7 413-1 5SD7 414-1 Standards IEC 143-11; EN 143-11 Approvals -- UL/cUL UL/cUL UL/cUL Rated voltage U N V AC 240 240/415 Rated arrester voltage U C L/N, N/PE, L/PEN V AC 350 Lightning impulse current I imp (10/350 μs) L/N or L/PEN, 1P/3P ka 25 25 25/75 25/75 N/PE ka -- 100 -- 100 Rated discharge surge current I n (8/20 μs) L/N or L/PEN, 1P/3P ka 25 25 25/75 25/75 N/PE ka -- 100 -- 100 Protection level U p L/N, N/PE, L/PEN kv 1.5 Follow current discharge capacity I fi (AC) L/N or L/PEN for 24 V/350 V ka 50/25 50/25 50/25 50/25 N/PE A -- 100 -- 100 Response time t A L/N or L/PEN ns 100 100 100 100 L-(N)-PE ns -- 100 -- 100 Max. back-up fuse Acc. to IEC 143-11 For parallel connection A 315 gl/gg For series connection A 125 gl/gg Short-circuit strength with max. back-up fuse ka rms 50 Temperature range C -40... +80 Degree of protection IP20, with connected conductors Conductor cross-section Finely stranded mm 2 2.5... 25 Solid mm 2 2.5... 35 Mounting width Acc. to DIN 43880 MW 2 4 8 Remote signaling (RS) Yes Contact type Floating CO contact (plug-in) Operational voltage, max. V AC 250 V DC 125 Operational current, max. - Resistive/inductive load A AC 1/1 - Resistive/inductive load ma DC 200/30 Conductor cross-section - Finely stranded mm 2 1.5 -Solid mm 2 1.5 Siemens LV 10.1 2011 /3

Overvoltage Protection Devices Siemens AG 2010 Lightning arresters, type 1 Selection and ordering data Version Discharge capacity Mounting width DT Order No. Price PU (UNIT, SET, M) PS*/ P. unit PG Weight approx. ka MW kg Lightning arresters 1P For single-conductor systems 25 2 A 5SD7 411-1 1 1 unit 008 0.424 2P For TN-S and TT systems 100 4 B 5SD7 412-1 1 1 unit 008 0.808 3P For TN-C systems 75 A 5SD7 413-1 1 1 unit 008 1.221 4P For TN-S and TT systems 100 8 A 5SD7 414-1 1 1 unit 008 1.09 /4 Siemens LV 10.1 2011 * You can order this quantity or a multiple thereof.

Siemens AG 2010 Overvoltage Protection Devices Combination surge arresters, type 1 and type 2 Overview Combination surge arresters type 1 and type 2 protect lowvoltage systems against the overvoltages and high currents triggered by direct lightning strikes. They are tested by waveshaped lightning impulse, 25 KA to 100 ka with waveform 10/350 µs. The protection level is lowered to 1.5 kv by the combination surge arresters. A thermal isolating arrester disconnector offers a high degree of protection against overload. All spark gaps are tripped. For this reason, decoupling reactors are no longer required for the installation of overvoltage protection devices. Benefits The rated arrester voltage is a uniform 350 V AC. This increases safety in systems with extended voltage overshoots. All combination surge arresters are fitted with a mechanical fault indication, which does not require an extra power supply. The protective modules are plug-in versions. No dismantling of electrical wires required when replacing the protective modules. When taking insulation measurements, the protective modules are simply removed in order to ensure disconnection from the power supply. The same type 2 overvoltage protective modules are used as for the slim version of the surge arresters (5SD7 42.). This simplifies stock-keeping. All combination surge arresters have a remote signaling contact, which signals if the device fails. Technical specifications 5SD7 441-1 5SD7 442-1 5SD7 443-1 5SD7 444-1 Standards IEC 143-11; EN 143-11 Approvals -- KEMA, UL/cUL KEMA, UL/cUL KEMA, UL/cUL Rated voltage U N V AC 240 240/415 Rated arrester voltage U C L/N, N/PE, L/PEN V AC 350 Lightning impulse current I imp (10/350 μs) L/N or L/PEN, 1P/3P ka 25 25 25/75 25/75 N/PE ka -- 100 -- 100 Rated discharge surge current I n (8/20 μs) L/N or L/PEN, 1P/3P ka 25 25 25/75 25/75 N/PE ka -- 100 -- 100 Protection level U p L/N, N/PE, L/PEN kv 1.5 Follow current discharge capacity I fi (AC) L/N or L/PEN ka 25 25 25 25 N/PE ka -- 100 -- 100 Response time t A L/N or L/PEN ns 25 100 100 100 L-(N)-PE ns -- 100 -- 100 Max. back-up fuse Acc. to IEC 143-11 For parallel connection A 315 gl/gg For series connection A 125 gl/gg Short-circuit strength with max. back-up fuse ka rms 25 Temperature range C -40... +80 Degree of protection IP20, with connected conductors Conductor cross-section Finely stranded mm 2 2.5... 25 Solid mm 2 2.5... 35 Mounting width Acc. to DIN 43880 MW 2 4 8 Visual function/fault indication Yes Remote signaling (RS) Yes Contact type Floating CO contact (plug-in) Operational voltage, max. V AC 250 V DC 125 Operational current, max. - Resistive/inductive load A AC 1/1 - Resistive/inductive load ma DC 200/30 Conductor cross-section - Finely stranded mm 2 1.5 -Solid mm 2 1.5 Siemens LV 10.1 2011 /5

Overvoltage Protection Devices Siemens AG 2010 Combination surge arresters, type 1 and type 2 Selection and ordering data Version Discharge capacity Mounting width DT Order No. Price PU (UNIT, SET, M) PS*/ P. unit PG Weight approx. ka MW kg Combination surge arresters 1P For single-conductor systems 25 2 A 5SD7 441-1 1 1 unit 008 0.35 2P For TN-S and TT systems 100 4 B 5SD7 442-1 1 1 unit 008 0.741 3P For TN-C systems 75 A 5SD7 443-1 1 1 unit 008 1.004 4P For TN-S and TT systems 100 8 A 5SD7 444-1 1 1 unit 008 1.403 / Siemens LV 10.1 2011 * You can order this quantity or a multiple thereof.

Siemens AG 2010 Overvoltage Protection Devices Overview Surge arresters type 2 are used downstream of lightning arresters type 1 in main distribution boards or sub-distribution boards. They protect low-voltage systems against transient overvoltages. The type 2 surge arrester lowers the protection level to 1.4 / 1.5 kv. A remote signaling contact signals whether a protective module has been disconnected from the network by the thermal arrester disconnector or whether it is just not plugged in. All spark gaps are tripped. For this reason, decoupling reactors are no longer required for the installation of overvoltage protection devices. To ensure fault-free operation of photovoltaic systems, it is essential to have standardized protection against lightning and overvoltages. SPDs (5SD7 483-.) on the DC side protect the photovoltaic generator and the inverter against overvoltages. The SPDs 5SD7 473-. and 5SD7 485-. are especially available for protecting IT systems. Benefits The rated arrester voltage is a uniform 350 V AC. This increases safety in systems with extended voltage overshoots. All type 2 surge arresters are fitted with a mechanical fault indication, which does not require an extra power supply. A thermal isolating arrester installed in each device offers a high degree of protection. In the event of overload, the surge arrester is disconnected from the mains - the plant continues running The protective modules are plug-in versions. No dismantling of electrical wires required when replacing the protective modules. When taking insulation measurements, the protective modules are simply removed in order to ensure disconnection from the power supply. All surge arresters are available with a remote signaling contact, which signals if the device fails. Technical specifications Surge arresters, standard design N/PE Single-pole Multipole Plug-in Plug-in 3P 4P 3P 4P 3P 5SD7 481-0 5SD7 41-. 5SD7 43-. 5SD7 44-. 5SD7 473-. 5SD7 485-. 5SD7 483-. Standards IEC 143-11; EN 143-11 Approvals KEMA -- Rated voltage U N V AC 240 240 240/415 240/415 500 240/415 -- Rated arrester voltage U C L/N V AC -- 350 -- -- -- -- -- L/N or L/PEN V -- -- 350 AC 350 AC 580 AC 440 AC 1000 DC N/PE V AC 20 -- -- 20 -- -- -- Rated discharge surge current I n (8/20 μs) L/N ka -- 20 -- -- -- -- -- L/N or L/PEN, 1P ka -- -- 20 20 15 20 15 N/PE ka 20 -- -- 20 -- -- -- Max. discharge surge current I max (8/20 μs) L/N ka -- 40 -- -- -- -- -- L/N or L/PEN, 1P ka -- -- 40 40 -- -- 30 L/N or L/PEN, 1P/multipole ka -- -- -- -- 30 40 -- N/PE ka 40 -- -- 40 -- -- -- Lightning impulse current I imp (10/350 μs) ka 12 -- Protection level U p L/N or L/PEN kv -- 1.4 1.4 1.4 2.5 2.2 5 N/PE kv 1.5 -- -- 1.5 -- -- -- Response time t A L/N or L/PEN ns -- 25 25 25 25 25 25 N/PE ns 100 -- -- 100 -- -- -- Max. back-up fuse Acc. to IEC 143-11 For parallel connection A 125 gl/gg For series connection A 3 gl/gg Short-circuit strength with max. back-up fuse ka rms 25 Temperature range C -40... +80 Degree of protection Conductor cross-section IP20, with connected conductors Finely stranded mm 2 1.5... 25 Solid mm 2 1.5... 35 Mounting width according to DIN 43880 MW 1 1 3 4 3 4 3 Visual function/fault indication Yes Siemens LV 10.1 2011 /7

Overvoltage Protection Devices Siemens AG 2010 Multipole surge arresters, narrow design 5SD7 422-0 5SD7 422-1 5SD7 423-0 5SD7 423-1 5SD7 424-0 5SD7 424-1 Standards IEC 143-11; DIN VDE 0754- Approvals KEMA KEMA/ UL/cUL KEMA KEMA/ UL/cUL KEMA KEMA/ UL/cUL Rated voltage U N V AC 240 240/415 240/415 Rated arrester voltage U C L/N or L/PEN V AC 350 350 350 N/PE V AC 24 -- 24 Rated discharge surge current I n (8/20 μs) L/N or L/PEN, 1P/3P ka 20 20 20 N/PE ka 20 -- 20 Max. discharge surge current I max (8/20 μs) L/N or L/PEN, 1P/3P ka 40 40 40 N/PE ka 40 -- 40 Protection level U p L/N or L/PEN kv 1.4 1.4 1.4 N/PE kv 1.5 -- 1.5 Response time t A L/N ns 25 25 25 N/PE ns 100 -- 100 Max. back-up fuse Acc. to IEC 143-11 For parallel connection A 125 gl/gg For series connection A 3 gl/gg Short-circuit strength with max. back-up fuse ka rms 25 25 25 Temperature range C -40... +80 Degree of protection IP20, with connected conductors Conductor cross-section Finely stranded mm 2 1.5... 1 Solid mm 2 1.5... 25 Mounting width Acc. to DIN 43880 mm 2 38 50 Visual function/fault indication Yes Remote signaling contact Remote signaling (RS) Yes Contact type Floating CO contact (plug-in) Operational voltage, max. V AC 250 V DC 125 Operational current, max. Resistive/inductive load A AC 1/1 Resistive/inductive load ma DC 200/30 Conductor cross-section Finely stranded mm 2 1.5 Solid mm 2 1.5 /8 Siemens LV 10.1 2011

Siemens AG 2010 Overvoltage Protection Devices Selection and ordering data Version Discharge surge current I n /I max Mounting width DT Order No. Price PU (UNIT, SET, M) PS*/ P. unit PG Weight approx. ka MW kg Surge arresters, standard design 1P, plug-in - Without remote signaling 20/40 1 A 5SD7 41-0 1 1 unit 008 0.133-20/40 1 A 5SD7 41-1 1 1 unit 008 0.139 N/PE, 1P, plug-in - Without remote signaling 20/40 1 A 5SD7 481-0 1 1 unit 008 0.122 3P, plug-in, 3+0 circuit For TN-C systems - Without remote signaling 20/40 3 A 5SD7 43-0 1 1 unit 008 0.32-20/40 3 B 5SD7 43-1 1 1 unit 008 0.371 3P, plug-in For protecting the DC part of the photovoltaic systems up to 1000 V DC acc. to IEC 034-7-712 - Without remote signaling 15/30 3 A 5SD7 483-0 1 1 unit 008 0.344-15/30 3 A 5SD7 483-1 1 1/44 units 008 0.352 4P, plug-in, 3+1 circuit For TN-S and TT systems - Without remote signaling 20/40 4 A 5SD7 44-0 1 1 unit 008 0.42-20/40 4 A 5SD7 44-1 1 1 unit 008 0.432 * You can order this quantity or a multiple thereof. Siemens LV 10.1 2011 /9

Overvoltage Protection Devices Siemens AG 2010 Version Discharge surge current I n /I max Mounting width DT Order No. Price PU (UNIT, SET, M) PS*/ P. unit PG Weight approx. ka MW kg Surge arresters, standard design 3P, plug-in, 3+0 circuit For IT systems - Without remote signaling 15/30 3 A 5SD7 473-0 1 1 unit 008 0.384-15/30 3 A 5SD7 473-1 1 1 unit 008 0.371 4P, plug-in, 4+0 circuit For IT systems with N-conductor incorporated in the cable - Without remote signaling 20/40 4 A 5SD7 485-0 1 1/44 units 008 0.445-20/40 4 A 5SD7 485-1 1 1 unit 008 0.455 Version Discharge surge current I n /I max DT Order No. Price PU (UNIT, SET, M) PS*/ P. unit PG Weight approx. ka mm (MW) kg Surge arresters, narrow design 2P For TN-S and TT systems - Without remote signaling 20/40 24 (1 1/3) A 5SD7 422-0 1 1 unit 008 0.220-20/40 24 (1 1/3) B 5SD7 422-1 1 1 unit 008 0.229 3P For TN-C systems - Without remote signaling 20/40 3 (2) A 5SD7 423-0 1 1 unit 008 0.320-20/40 3 (2) B 5SD7 423-1 1 1 unit 008 0.317 4P For TN-S and TT systems - Without remote signaling 20/40 48 (2 2/3) A 5SD7 424-0 1 1 unit 008 0.407-20/40 48 (2 2/3) A 5SD7 424-1 1 1 unit 008 0.423 /10 Siemens LV 10.1 2011 * You can order this quantity or a multiple thereof.

Siemens AG 2010 Overvoltage Protection Devices Overview Type 3 surge arresters are installed after the type 2 surge arresters in sub-distribution boards close to the loads in single or multiphase systems and further limit the overvoltage in order to protect the connected loads. Surge arresters, type 3 Benefits The protective modules are plug-in versions. No mounting work required when replacing the protective modules All type 3 surge arresters are fitted with a fault indication, which does not require an extra power supply In the event of a power failure, a remote signaling is output over an optocoupler with open collector output. Technical specifications Multipole surge arresters, plug-in 2P 4P 5SD7 432-1 5SD7 432-2 5SD7 432-3 5SD7 432-4 5SD7 434-1 Standards IEC 143-11; EN 143-11 Approvals KEMA -- KEMA Rated voltage U N V AC 230 120 0 24 230/400 Rated load current I L (at 30 C) A 2 2 2 2 3 2 Rated arrester voltage U C V AC 253 150 100 34 335 Rated discharge surge current I n (8/20 μs) ka 3 2.5 2.5 1 1.5 Max. discharge surge current I max (8/20 μs) ka 10 10.5 2 4.5 Combined surge U oc kv 4 2 4 Protection level U p L N/L(N) PE V 1500/ 00 850/ 350 700/ 250 550/ 100 1200 Response time t A ns 100 100 100 100 100 Required back-up fuse, max. A 25 gl/gg 25 gl/gg 25 gl/gg 25 gl/gg 25 gl/gg Temperature range C -40... +85 Degree of protection IP20, with connected conductors Conductor cross-section Finely stranded mm 2 0.2... 4 Solid mm 2 0.2... 2.5 Mounting width Acc. to DIN 43880 MW 1 1 1 1 2 Visual function/fault indication Yes Remote signaling (RS) Yes Contact type NC contacts Operational voltage, max. V AC 250 Operational current, max. 3 Selection and ordering data Version Rated voltage U N Mounting width DT Order No. Price PU (UNIT, SET, M) PS*/ P. unit PG Weight approx. V AC MW kg Surge arresters, plug-in 2P 24 1 A 5SD7 432-4 1 1 unit 008 0.08 0 1 B 5SD7 432-3 1 1 unit 008 0.087 120 1 B 5SD7 432-2 1 1 unit 008 0.089 230 1 A 5SD7 432-1 1 1 unit 008 0.087 4P 230/400 2 A 5SD7 434-1 1 1 unit 008 0.135 * You can order this quantity or a multiple thereof. Siemens LV 10.1 2011 /11

Overvoltage Protection Devices Siemens AG 2010 Accessories for surge arresters Selection and ordering data Version DT Order No. Price PU (UNIT, SET, M) PS*/ P. unit PG Weight approx. kg Plug-in parts for lightning arresters type 1 and combination surge arresters type 1 and type 2 Lightning arresters L/N I fi 50 ka rms B 5SD7 418-1 1 1 unit 008 0.270 for 5SD7 41 lightning arresters. Lightning arresters N/PE B 5SD7 418-0 1 1 unit 008 0.254 for 5SD7 41. lightning arresters and 5SD7 44. combination surge arresters. Plug-in parts for lightning arresters type 1 and combination surge arresters type 1 and type 2 Lightning arresters L/N I fi 50 ka rms B 5SD7 448-1 1 1 unit 008 0.148 Lightning arresters N/PE for 5SD7 41. lightning arresters and 5SD7 44. combination surge arresters. B 5SD7 418-0 1 1 unit 008 0.254 Plug-in parts for surge arresters type 2 and combination surge arresters type 1 and type 2 Surge arresters L/N for 5SD7 42. surge arresters and 5SD7 44. combination surge arresters. Lightning arresters N/PE for 5SD7 41. lightning arresters and 5SD7 44. combination surge arresters. B 5SD7 428-1 1 1 unit 008 0.09 B 5SD7 428-0 1 1 unit 008 0.07 Plug-in parts for 5SD7 4. surge arresters, type 2 Surge arresters L/N B 5SD7 48-1 1 1 unit 008 0.0 Surge arresters N/PE B 5SD7 488-0 1 1 unit 008 0.05 Plug-in parts for 5SD7 485-. surge arresters, type 2 Surge arresters for IT systems A 5SD7 488-1 1 1 unit 008 0.053 Plug-in parts for 5SD7 473-. and 5SD7 483-. surge arresters, type 2 Surge arresters for photovoltaics and IT systems A 5SD7 498-1 1 1 unit 008 0.05 Plug-in parts for 5SD7 432-. surge arresters, type 3 Rated voltage U N = 230 V B 5SD7 437-1 1 1 unit 008 0.042 Rated voltage U N = 120 V B 5SD7 437-2 1 1 unit 008 0.041 Rated voltage U N = 0 V B 5SD7 437-3 1 1 unit 008 0.041 Rated voltage U N = 24 V B 5SD7 437-4 1 1 unit 008 0.042 Plug-in parts for 5SD7 434-1 surge arresters, type 3 B 5SD7 438-1 1 1 unit 008 0.00 /12 Siemens LV 10.1 2011 * You can order this quantity or a multiple thereof.

Siemens AG 2010 Overvoltage Protection Devices Link rails Overview Link rails let you combine 1-pole surge arresters to create complete solutions for multiphase systems. Benefits These link rails allow cable lengths to be reduced to a minimum and save time during mounting. Technical specifications Link rails 5SD7 490-2, 5SD7 490-3, 5SD7 490-4 Standards EN 0439-1 Busbar material SF-Cu F 24 Partition material Plastic, cycolor 300 temperature resistant 90 C Busbar cross-section mm 2 1 Rated operational voltage U c V AC 400 Rated current I n Cross-section 1 mm 2 A 80 Rated impulse withstand voltage U imp kv 4 Test pulse voltage (1.2/50) kv.2 Rated conditional short-circuit current I cc ka 25 Resistance to climate Constant atmosphere acc. to DIN 50015 23/83; 40/92; 55/20 Humid heat (acc. to IEC 8, Part 2-30) 28 cycles Insulation coordination according to IEC 04-1 Overvoltage category III Pollution degree 2 Maximum busbar current I s /phase Cross-section 1 mm 2 A 80 Maximum current in the arm I E /phase Cross-section 1 mm 2 A 130 Selection and ordering data Version Linking sequence Length DT Order No. Price PU (UNIT, SET, M) PS*/ P. unit PG Weight approx. MW mm kg Link rails for the interconnection of single-pole surge arresters, type 2 2-pole 2 34 A 5SD7 490-2 1 10/100 units 008 0.093 3-pole 3 51.8 A 5SD7 490-3 1 10/100 units 008 0.143 4-pole 4 9. A 5SD7 490-4 1 10/100 units 008 0.194 * You can order this quantity or a multiple thereof. Siemens LV 10.1 2011 /13

Overvoltage Protection Devices Siemens AG 2010 Configuration More information Selection of overvoltage protection devices Situation Systems Basic protection Which type of building do you want to protect? Generally speaking, all our devices are suitable for residential buildings, office buildings, industrial and commercial buildings. Low risk buildings TN-S and TT systems For installation upstream of counters in main distribution boards or in combined main/sub-distribution boards Narrow design 5SD7 424-0, 5SD7 424-1 Wide design 5SD7 44-0, 5SD7 44-1 With or without remote signaling - No outer lightning protection - Power supply over ground conductor TN-C systems Narrow design 5SD7 423-0, 5SD7 423-1 Wide design 5SD7 43-0, 5SD7 43-1 With or without remote signaling High-risk buildings TN-S and TT systems Lightning arresters, type 1 5SD7 414-1 - Outer lightning protection system TN-C systems Lightning arresters, type 1 5SD7 413-1 5SD7411-1 - Power supply over overhead lines TN-S and TT systems Combination surge arresters, type 1 and type 2 5SD7 444-1 - Grounded aerial structures TN-C systems Combination surge arresters, type 1 and type 2 5SD7 443-1 5SD7441-1 IT systems without N-conductor incorporated in the cable Typically, IT systems are only installed in special building sections. There are generally still TN-C, TN-S or TT systems in the area of the main distribution board. In this case, the protective devices shown above must be installed. IT systems with N-conductor incorporated in the cable /14 Siemens LV 10.1 2011

Siemens AG 2010 Overvoltage Protection Devices Configuration Medium protection For installation upstream of counters in main distribution boards or in combined main/sub-distribution boards Fine protection For installation directly upstream of the terminal equipment Narrow design 5SD7 424-0, 5SD7 424-1 Standard design 5SD7 44-0, 5SD7 44-1 With or without remote signaling Only required if the distance between the main and sub-distribution boards is > 10 m Narrow design 5SD7 423-0, 5SD7 423-1 Standard design 5SD7 43-0, 5SD7 43-1 With or without remote signaling Only required if the distance between the main and sub-distribution boards is > 10 m Narrow design 5SD7 424-0, 5SD7 424-1 Standard design 5SD7 44-0, 5SD7 44-1 With or without remote signaling Surge arresters, type 3 For installation in sub-distribution boards or control cabinets 5SD7 432-x and 5SD7 434-1 Narrow design 5SD7 423-0, 5SD7 423-1 Standard design 5SD7 43-0, 5SD7 43-1 With or without remote signaling Narrow design 5SD7 424-0, 5SD7 424-1 Standard design 5SD7 44-0, 5SD7 44-1 With or without remote signaling Only required if the distance between the main and sub-distribution boards is > 10 m Narrow design 5SD7 423-0, 5SD7 423-1 Standard design 5SD7 43-0, 5SD7 43-1 With or without remote signaling Only required if the distance between the main and sub-distribution boards is > 10 m 5SD7 473-0, 5SD7 473-1 3-pole (3+0 circuit) U c = 580 V AC with or without remote signaling 5SD7 485-0, 5SD7 485-1 4-pole (4+0 circuit) U c = 440 V AC with or without remote signaling Siemens LV 10.1 2011 /15

Overvoltage Protection Devices Siemens AG 2010 Surge arresters for measuring and control technology Overview The surge arresters for measuring and control technology are overvoltage protection modules that comprise two parts, a basic element and a plug-in part. Their application area is the protection of signal circuits. The cable shields of basic elements can be either directly or indirectly grounded. The mounting width of the new surge arrester is 1 MW. Through the number of integrated paths, it is possible to protect up to four signal cores or two double cores against overvoltages. Benefits The two-component design offers users maximum maintenance convenience. The basic element is always a fixed integral part of the installation. There are therefore no laborious access problems during repair work, etc. The benefits: - Two-part design comprising plug-in part and basic element - Interruption-free and impedance neutral plugging in and pulling out of the plug-in part - Reverse polarity protection through mechanical encoding - An electric surge voltage resistant connection is made automatically when it is snapped onto the standard mounting rail no laborious wiring of ground. The arrangement of suppressor diodes between signal cores achieves a fine protection in connection with a fast response. The low-limiting coupling of the suppressor diodes to the signal cores supports fast data transmission rates. The use of gas-filled surge arresters ensures a high discharge capacity. Technical specifications 5SD7 502-0 5SD7 520-1 5SD7 522-7 5SD7 530-3 5SD7 541-7 5SD7 550-4 IEC category/en type C1/C2/C3/D1 C1/C2/C3/ C1/C2/C3/D1 C1/C2/C3/D1 C1/C2/C3/D1 C1/C2/C3/D1 D1/B2 Max. continuous voltage U C Direct voltage V DC 8 185 40 5.2 40 14 AC voltage V AC 48 130 28 3. 28 9.8 Rated current I N ma 2000 450 450 450 300 450 Lightning test current I imp 10/350 μs Per path ka 5 -- 2.5 2.5 2.5 2.5 Rated discharge current I n 8/20 μs Core - Core ka -- 10 10 10 -- 10 Core - Ground ka 20 10 10 10 10 10 Total surge current I N 8/20 μs ka 40 10 20 20 20 20 Output voltage limit at 1 kv/μs Core - Core V -- 300 55 15 -- 25 Core - Ground V 00 300 450 15 55 25 Residual voltage at I n Core - Core V -- 10 55 15 -- 25 (C2/5 ka) Core - Ground V -- 10 -- 30 55 40 (C2/5 ka) Response time t A Core - Core ns -- 500 1 500 -- 500 Core - Ground ns 100 500 100 500 1 500 Insertion loss A E Symmetrical in the 50-Ω system db -- -- Typ. 0.5 -- -- -- (1.5 MHz) Asymmetrical in the 50-Ω system db 0.1 (1 MHz) -- -- -- 0.5 (1.5 MHz) -- Symmetrical in the 100-Ω system db -- Typ. 0.2 -- 0.2 (5 MHz) -- 0.2 (5 MHz) (5 MHz) Limit frequency f G (3 db) Symmetrical in the 50-Ω system MHz -- -- Typ. 8 -- -- -- Asymmetrical in the 50-Ω system MHz -- -- -- -- Typ. 8 -- Symmetrical in the 100-Ω system MHz -- Typ. 70 -- Typ. 70 -- Typ. 70 Resistor per path Ω -- -- 2.2 2.2 4.7 2.2 Temperature range C -40... +85 Degree of protection acc. to IEC 0529/EN 0529 Flammability class acc. to UL 94 IP20 V0 Test standards EN 143-21 IEC 143-21 EN 143-21 IEC 143-21 EN 143-21 IEC 143-21 /1 Siemens LV 10.1 2011

Siemens AG 2010 Overvoltage Protection Devices Combination options for basic elements and plug-in parts Surge arresters for measuring and control technology Plug-in part Basic elements 5SD7 502-0 5SD7 520-1 5SD7 522-7 5SD7 530-3 5SD7 541-7 5SD7 550-4 5SD7 500-0 -- -- -- -- -- 5SD7 512-1 -- -- -- -- 5SD7 522-0 -- -- -- -- 5SD7 522-1 -- -- -- -- 5SD7 541-1 -- -- -- -- -- Selection and ordering data Version Basic elements For plug-in parts with protection circuit for a 2-wire ungrounded signal circuit Jumper between terminals 3/4 (GND) and 9/10 For 5SD7 520-1 and 5SD7 530-3 plug-in parts For plug-in parts with protection circuit for a 2-wire ungrounded signal circuit Jumper between terminals 3/4 (GND) and 9/10 For 5SD7 522-1 and 5SD7 550-4 plug-in parts Mounting width MW DT Order No. Price PU (UNIT, SET, M) PS*/ P. unit PG Weight approx. 1 B 5SD7 512-1 1 1 unit 008 0.052 1 B 5SD7 522-1 1 1 unit 008 0.05 kg For plug-in parts with protection circuit for a 1 B 5SD7 522-0 1 1 unit 008 0.057 2-wire ungrounded signal circuit Gas arrester between terminals 3/4 (GND) and 9/10 For 5SD7 522-1 and 5SD7 550-4 plug-in parts For plug-in parts with protection circuit for four conductors 1 B 5SD7 541-1 1 1 unit 008 0.05 single-sided grounded signal circuit Jumper between terminals 3/4 (GND) and 9/10 For 5SD7 541-7 plug-in parts Jumper between terminals 3/4 (GND) and 9/10 1 B 5SD7 500-0 1 1 unit 008 0.050 For 5SD7 502-0 plug-in parts Plug-in parts - PROFIBUS 1 B 5SD7 530-3 1 1 unit 008 0.020 Protection for 2 signal cores with shared reference potential For 5SD7 512-1 basic element Plug-in parts for analog telecommunication 1 B 5SD7 520-1 1 1 unit 008 0.020 interfaces Protection for 2-wire Telecom cable (U k0 or T-DSL) For 5SD7 512-1 basic element Plug-in parts, 24 V AC 1 B 5SD7 522-7 1 1 unit 008 0.024 Protection for 2-wire ungrounded signal circuit. Miniature protection element between the connected cores For 5SD7 522-0 and 5SD7 522-1 basic elements Plug-in parts, 12 V DC 1 B 5SD7 550-4 1 1 unit 008 0.02 Protection for field bus systems and signal circuits in 3- or 4-wire method For 5SD7 522-0 and 5SD7 522-1 basic elements Plug-in parts, 24 V DC 1 B 5SD7 541-7 1 1 unit 008 0.02 Protection for 4 signal cores with shared reference potential For 5SD7 541-1 basic element Plug-in parts, 2-wire 1 B 5SD7 502-0 1 1 unit 008 0.020 Coarse protection for 2 single-sided signal leads For 5SD7 500-0 basic element * You can order this quantity or a multiple thereof. Siemens LV 10.1 2011 /17

Overvoltage Protection Devices Siemens AG 2010 Notes /18 Siemens LV 10.1 2011