DC Load Break Switch
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1 DC Load Break Switch ON O FF Photovoltaic Applications DC
2 Index Features Pg 1 IEC Technical Specification Pg 2 Switching Configuration Pg 3 4 Pole Switch - Mountings Pg 4 8 Pole Switch - Mountings Pg 6 Changeover Switch Applications Pg 8 Changeover Switch - Mountings Pg 9 Ordering Code Pg 11
3 DC Load Break Switches LB Series Load Break Switches comply with the latest specifications for modern low voltage devices. Outstanding electrical characteristics of LB Switches with compact design, contribute to space saving installation and operational convenience. Basic construction and design of the switch makes it compact, safe and highly reliable. The switch uses polyamide glass filled material, having excellent track resistance (CTI) for Insulation to prevent flashover between phases in the most severe conditions. The special contact design and configuration makes the switch highly reliable to withstand high short circuit currents. Applications Photovoltaic - Isolators Isolator Main Switch Emergency ON / OFF Inverter Applications AC / DC Changeover in Solar Pumps Features Compact and reliable Finger Protection Easy Installation Wiping Contacts Excellent switching and high short circuit capacity Optional Extended Terminals DIN rail mounting - Suitable for DB boards Various Panel mounting Options - Front mounting, Rear mounting Enclosure mounting 1
4 IEC - Technical Specification Type Configuration IEC Rating DC21B 500V 700V 1000V 500V UL Rating 508i 700V 1000V poles in series poles in series + 2 poles in series poles in series DCLB parallel poles in series poles in series + 2 parallel poles in series poles in series + 2 poles in series poles in series DCLB parallel poles in series poles in series + 2 parallel poles in series poles in series + 2 poles in series poles in series DCLB parallel poles in series poles in series + 2 parallel TERMINAL CROSS SECTION Measure DCLB220 DCLB225 DCLB232 DCLB240 Single / Multi Strand wire Min Max 2 mm mm Fine Strand Wire with Sleeve Min Max 2 mm 2 mm American Wire Gauge - AWG Recommended Tightening Torque for terminals - Nm
5 Switching Configurations Type 2 pole 4 pole ( pole ) 4 pole 4 pole ( with jumpers) 4 pole ( with jumpers, both input & output at bottom ) DC LB216 DC LB225 DC LB Contacts Wiring Diagram Switching Example Type 8-poles DC LB216 DC LB225 DC LB Contacts Wiring Diagram Switching Example 3
6 FRONT MOUNTINGS B13 4 POLE O FF ON 4 hole panel mounting. Degree of Protection : Front IP55 B33 1 ON Degree of Protection : Front IP65 Max 3 Padlocks 4 hole panel mounting Round padlocking device to prevent being switched ON by Unauthorized personnel REAR MOUNTINGS B23DB ON 80 O FF DC Degree of Protection : Front IP30 2 Hole rear mounting. Alternately snap mounting on DIN EN50022 rail (35mm). DIN Rail mounting with 45mm panel suitable for DB boards. 4
7 B13 B23 4 POLE Degree of Protection : Front IP30 2 Hole rear mounting. Alternately snap mounting on DIN EN50022 rail (35mm). DOOR INTERLOCK MB Degree of Protection : Front IP65 Switch with round padlocking device to prevent the Switch from being made ON by unauthorised personnel 2 hole rear mounting or snap mounting on DIN EN50022 rail (35mm) and operateable from the front (door) coupled with door mechanism Door interlock (door opens only in OFF position) Max.3 padlocks ENCLOSURES B31SMX Degree of Protection : Front IP65 Switch rear mounted for easy connection Enclosure colour : Dark grey base and light grey cover. Switch mounted in ABS / polycarbonate (optional) enclosure. Round padlocking device (Max.3 padlocks) to prevent the Switch from being made ON by unauthorised personnel Interlock Feature (Cover opens only in OFF position) 5
8 FRONT MOUNTINGS B13 8 POLE Degree of Protection : Front IP55 4 hole front panel mounting DOOR INTERLOCK MB34 Degree of Protection : Front IP65 Switch with padlocking device to prevent the Switch from being made ON by unauthorised personnel 4 hole rear mounting or snap mounting on DIN EN50022 rail (35mm) and operateable from the front (door) coupled with door mechanism Door interlock (door opens only in OFF position) Max.2 padlocks 16 SQ.48 6
9 O FF MB42 Degree of Protection : Front Ip55 4 hole rear mounting or snap mounting on DIN EN50022 rail (35mm) and operateable from the front (door) coupled with door mechanism Door interlock (door opens only in OFF position) 8 POLE ON B21 ENCLOSURES B31L Degree of Protection : IP65 Switch rear mounted for easy connection padlocking device (Max.2 padlocks) to prevent the Switch from being made ON by unauthorised personnel Interlock Feature (Cover opens only in OFF position) Enclosure colour : Grey Switch mounted in ABS / polycarbonate (optional) enclosure 7
10 Changeover Application - I Solar Panel DC Changeover Switch OFF Pump Grid DC Inverter Grid Connected Inverter Net Meter Load P Pump or Charging of battery Changeover Application - II Solar Panel Grid DC AC DC Changeover Switch OFF AC DC AC Inverter P Pump 8
11 4 Pole Changeover CHANGEOVER CHANGEOVER SWITCHING PROGRAME B13 I O II I X X X X O II X X X X 0 Degree of Protection : Front IP55 4 hole front panel mounting 130 MB34 0 Degree of Protection : Front IP55 Switch with padlocking device to prevent the Switch from being made ON by unauthorised personnel 4 hole rear mounting or snap mounting on DIN EN50022 rail (35mm) and operable from the front (door) coupled with door mechanism Door interlock (door opens only in OFF position) Max.2 padlocks 16 SQ.48 9
12 MB42 Degree of Protection : Front IP55 4 hole rear mounting or snap mounting on DIN EN50022 rail (35mm) and operateable from the front (door) coupled with door mechanism Door interlock (door opens only in OFF position) CHANGEOVER 0 B31L 0 Degree of Protection : IP65 Switch rear mounted for easy connection padlocking device (Max.2 padlocks) to prevent the Switch from being made ON by unauthorised personnel Interlock Feature (Cover opens only in OFF position) Enclosure colour : Grey Switch mounted in ABS / polycarbonate (optional) enclosure 10
13 B21 INSULATED JUMPER Type Pack Weight DC LBJ - LH g/pc DC LBJ - RH g/pc PRODUCT CODING DCLB XXX Frame Model XXX Programme code XXX Mounting Options XXX Knob Options XXX Colours DC Load Break Switch ( 2 & 4 pole ) 220/225/ 232/240 * / / / / B13/ B33 / B23 / B23DB / MB34 / B31SMX RD - Round Knob FL - Flag Knob GB - Grey Black DC Load Break Switch ( 8 Pole ) 220/225/ 232/240 * / B13 / MB34 / MB42 / B31L BG - Ball handle LH - Leech handle GB - Grey Black DC Load Break Switch ( Changeover ) 220/225/ 232/ B13 / MB34 / MB42 / B31L BG - Ball handle LH - Leech handle GB - Grey Black Fixed Digit Poles in Parallel Total Poles Poles in Series Fixed Digit * Ordering Code Example DCLB MB34 RD GB Stands for DCLB Switch, 232 frame, 4 pole Switching Configuration, with 4 Hole Rear Mounting, Grey Front Plate, Black Round Knob 11
14 Switch on to the Best... Salzer Electronics Limited, Unit-II Chinnamaddampalayam, Bilichi Post, Coimbatore INDIA Phone : / / Fax : salzer2@salzergroup.com
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