EH175 SA F 1-1 C 4 L A

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1 Reduced voltage starters Open & enclosed Description Compact, space saving design 16 starter frame sizes, B16 to EH00 Maximum U.L. horsepower ratings Mechanically interlocking as standard for wye-delta and autotransformer starters Incomplete sequence timer as standard for wye-delta and autotransformer starters Remote customer connection point at separate terminal blocks Easy removal of arc chute for quick inspection and change of contacts Double break contact design with magnetic arc chamber extinguishes arc in the shortest possible time Class 10 adjustable overload relays: - Single phase & phase unbalance protection - Isolated alarm circuit (N.O.) contact - Ambient compensation from -20 o C to +65 o C - Manual test - Manual or automatic reset - Factory calibrated and tested - Self-contained heater coils no field installation is necessary (included in price) - Wide adjustment range - Class 30 overload available on EH175 EH00 Index Reduced voltage starters Features....1 Auto-transformer type...2 Wye-delta, open transition...4 Wye-delta, closed transition....6 Part winding... Circuit diagrams Approximate dimensions Starter Size Starter Type SA - Autotransformer SG - Wye-Delta Open Transition SY - Wye-Delta Closed Transition SH - Part Winding Combination Type No digit Non-Combination N - Non-Fusible Disconnect F - Fusible Disconnect B - Thermal Magnetic Circuit Breaker M - Motor Circuit Protection (MCP) Enclosure No Digit - Open 1 - NEMA NEMA NEMA 3R 4 - NEMA 4 X - NEMA 4X Coil Voltage See Voltage Selection chart Overload Range See Overload Relay Selection chart EH175 SA F 1-1 C 4 L A REDUCED VOLTAGE STARTERS: Selection: Circuit diagrams: Approximate dimensions: Accessories A Start-stop pushbutton C 2 pos. sel. switch D 3 pos. sel. switch E Pilot light F Start-stop pushbutton & pilot light H 2 pos. sel. switch & pilot light J 3 pos. sel. switch & pilot light Horsepower A 10 N 200 B 15 P 250 C 20 R 300 D 25 S 350 E 30 T 400 F 40 U 500 G 50 V 600 H 60 W 700 J 75 X 00 K 100 Y 900 L 125 Z 1000 M 150 Line Voltage V V V V.1

2 Reduced voltage starters Auto-transformer non-combination type 3 Pole, open & enclosed General purpose current Maximum ratings UL Listed Maximum motor horsepower ratings 200V 230V 460/40V 575/600V UL rated Open type NEMA 1 (Indoor metal) Catalog List Catalog List number price number price B16SA-1 $ 265 B16SA1-1 $ B25SA B25SA B40SA B40SA B50SA B50SA B63SA B63SA B75SA-1 35 B75SA A110SA A110SA EH145SA EH145SA EH175SA EH175SA1-1 11, EH210SA-1 11,464 EH210SA1-1 13, EH260SA-1 13,113 EH260SA1-1 14, EH300SA-1 16,02 EH300SA1-1 17, EH450SA-1 20,664 EH450SA1-1 21, EH550SA-1 23,95 EH550SA1-1 26, EH700SA-1 35,041 EH700SA1-1 37, EH00SA-1 39,500 EH00SA1-1 41,745 NEMA rated NEMA size Continuous current BN16SA-1 $ 265 BN16SA1-1 $ BN25SA BN25SA BN50SA BN50SA BN75SA-1 35 BN75SA EHN145SA EHN145SA EHN260SA-1 13,113 EHN260SA1-1 14, EHN550SA-1 23,95 EHN550SA1-1 26, EHN00SA-1 39,500 EHN00SA1-1 41,745 Overload Relay suffix code. Select from the Overload Relay Selection chart on back cover fold out page. Coil voltage selection chart Hz Contr. Volts Control transformers type / / / / A,B,EH F G 1 B 2 C A,B F EH N 1 J 3 M 5 DC A,B,EH Y W P Q R T For other voltages, consult factory. 24 & 4VAC coils are not available for sizes EH450 - EH00. For these applications, use an interposing control relay. Coil voltage selection All catalog numbers include a 120V coil. To select other coil voltages, substitute the code from the Coil Voltage Selection Chart for the first digit after the dash in the catalog number. D.C. operated starters If DC operation is required, consult factory. REDUCED VOLTAGE STARTERS: Selection: Circuit diagrams: Approximate dimensions: Open Enclosed Type A, B, EH Discount schedule RV RVE

3 Reduced voltage starters Auto-transformer non-combination type NEMA 3R NEMA 12 NEMA 4 NEMA 4X (Outdoor Metal) (Metal Dustight) (Watertight) (Stainless Steel) Catalog List Catalog List Catalog List Catalog List number price number price number price number price UL rated B16SA3-1 $ 32 B16SA2-1 $ 32 B16SA4-1 $ 4662 B16SAX-1 $ 5700 B25SA B25SA B25SA B25SAX B40SA B40SA B40SA B40SAX B50SA B50SA B50SA B50SAX B63SA B63SA B63SA B63SAX B75SA B75SA B75SA B75SAX A110SA A110SA A110SA A110SAX EH145SA EH145SA EH145SA4-1 11,322 EH145SAX-1 12,200 EH175SA3-1 12,64 EH175SA2-1 12,64 EH175SA4-1 14,634 EH175SAX-1 16,300 EH210SA3-1 14,561 EH210SA2-1 14,561 EH210SA4-1 16,541 EH210SAX-1 1,400 EH260SA3-1 16,065 EH260SA2-1 16,065 EH260SA4-1 17,65 EH260SAX-1 19,600 EH300SA3-1 1,927 EH300SA2-1 1,927 EH300SA4-1 20,79 EH300SAX-1 22,000 EH450SA3-1 23,49 EH450SA2-1 23,49 EH450SA4-1 25,71 EH450SAX-1 27,450 EH550SA3-1 2,371 EH550SA2-1 2,371 EH550SA4-1 30,621 EH550SAX-1 33,00 EH700SA3-1 39,99 EH700SA2-1 39,99 EH700SA4-1 41,549 EH700SAX-1 45,00 EH00SA3-1 43,995 EH00SA2-1 43,995 EH00SA4-1 46,245 EH00SAX-1 50,200 NEMA rated BN16SA3-1 $ 32 BN16SA2-1 $ 32 BN16SA4-1 $ 4662 BN16SAX-1 $ 5700 BN25SA BN25SA BN25SA BN25SAX BN50SA BN50SA BN50SA BN50SAX BN75SA BN75SA BN75SA BN75SAX EHN145SA EHN145SA EHN145SA4-1 11,322 EHN145SAX-1 12,200 EHN260SA3-1 16,065 EHN260SA2-1 16,065 EHN260SA4-1 17,65 EHN260SAX-1 19,600 EHN550SA3-1 2,371 EHN550SA2-1 2,371 EHN550SA4-1 30,621 EHN550SAX-1 33,00 EHN00SA3-1 43,995 EHN00SA2-1 43,995 EHN00SA4-1 46,245 EHN00SAX-1 50,200 Overload Relay suffix code. Select from the Overload Relay Selection chart on back cover fold out page. REDUCED VOLTAGE STARTERS: Selection: Circuit diagrams: Approximate dimensions: Open Enclosed Type A, B, EH Discount schedule RV RVE.3

4 Reduced voltage starters Wye-delta, open transition 3 Pole, open & enclosed General purpose current Maximum ratings UL Listed Maximum motor horsepower ratings 200V 230V 460/40V 575/600V UL rated Open type NEMA 1 (Indoor metal) Catalog List Catalog List number price number price B25SG-1 $ 2025 B25SG1-1 $ B30SG B30SG B40SG B40SG B50SG B50SG B63SG B63SG B75SG B75SG A110SG-1 59 A110SG EH145SG EH145SG EH175SG EH175SG EH210SG-1 10,332 EH210SG1-1 11, EH260SG-1 11,973 EH260SG1-1 13, EH300SG-1 17,300 EH300SG1-1 1, EH450SG-1 24,000 EH450SG1-1 25, EH550SG-1 26,337 EH550SG1-1 2, EH700SG-1 32,939 EH700SG1-1 34, EH00SG-1 36,267 EH00SG1-1 3,403 NEMA rated NEMA size Continuous current 1YD BN25SG-1 $ 2025 BN25SG1-1 $ YD BN50SG BN50SG YD BN75SG BN75SG YD EHN145SG EHN145SG YD EHN260SG-1 11,973 EHN260SG1-1 13,305 6YD EHN550SG-1 26,337 EHN550SG1-1 2,473 7YD EHN00SG-1 36,267 EHN00SG1-1 3,403 Overload Relay suffix code. Select from the Overload Relay Selection chart on back cover fold out page. Coil voltage selection chart Hz Contr. Volts Control transformers type / / / / A,B,EH F G 1 B 2 C A,B F EH N 1 J 3 M 5 DC A,B,EH Y W P Q R T For other voltages, consult factory. 24 & 4VAC coils are not available for sizes EH450 - EH00. For these applications, use an interposing control relay. Coil voltage selection All catalog numbers include a 120V coil. To select other coil voltages, substitute the code from the Coil Voltage Selection Chart for the first digit after the dash in the catalog number. D.C. operated starters If DC operation is required, consult factory. REDUCED VOLTAGE STARTERS: Selection: Circuit diagrams: Approximate dimensions: Open Enclosed Type A, B, EH Discount schedule WD WDE

5 Reduced voltage starters Wye-delta, open transition NEMA 3R NEMA 12 NEMA 4 NEMA 4X (Outdoor Metal) (Metal Dustight) (Watertight) (Stainless Steel) Catalog List Catalog List Catalog List Catalog List number price number price number price number price UL rated B25SG3-1 $ 2661 B25SG2-1 $ 2661 B25SG4-1 $ 271 B25SGX-1 $ 3200 B30SG B30SG B30SG B30SGX B40SG B40SG B40SG B40SGX B50SG B50SG B50SG B50SGX B63SG B63SG B63SG B63SGX B75SG B75SG B75SG B75SGX A110SG A110SG A110SG A110SGX EH145SG EH145SG EH145SG EH145SGX-1 10,25 EH175SG EH175SG EH175SG4-1 10,100 EH175SGX-1 12,100 EH210SG3-1 12,143 EH210SG2-1 12,143 EH210SG4-1 12,690 EH210SGX-1 14,300 EH260SG3-1 14,925 EH260SG2-1 14,925 EH260SG4-1 16,725 EH260SGX-1 1,225 EH300SG3-1 20,255 EH300SG2-1 20,255 EH300SG4-1 21,025 EH300SGX-1 23,650 EH450SG3-1 27,433 EH450SG2-1 27,433 EH450SG4-1 2,544 EH450SGX-1 31,050 EH550SG3-1 30,723 EH550SG2-1 30,723 EH550SG4-1 32,973 EH550SGX-1 34,600 EH700SG3-1 36,34 EH700SG2-1 36,34 EH700SG4-1 3,522 EH700SGX-1 40,950 EH00SG3-1 40,653 EH00SG2-1 40,653 EH00SG4-1 42,903 EH00SGX-1 46,750 NEMA rated BN25SG3-1 $ 2661 BN25SG2-1 $ 2661 BN25SG4-1 $ 271 BN25SGX-1 $ 3200 BN50SG BN50SG BN50SG BN50SGX BN75SG BN75SG BN75SG BN75SGX EHN145SG EHN145SG EHN145SG EHN145SGX-1 10,25 EHN260SG3-1 14,925 EHN260SG2-1 14,925 EHN260SG4-1 16,725 EHN260SGX-1 1,225 EHN550SG3-1 30,723 EHN550SG2-1 30,723 EHN550SG4-1 32,973 EHN550SGX-1 34,600 EHN00SG3-1 40,653 EHN00SG2-1 40,653 EHN00SG4-1 42,903 EHN00SGX-1 46,750 Overload Relay suffix code. Select from the Overload Relay Selection chart on back cover fold out page. REDUCED VOLTAGE STARTERS: Selection: Circuit diagrams: Approximate dimensions: Open Enclosed Type A, B, EH Discount schedule WD WDE.5

6 Reduced voltage starters Wye-delta closed transition 3 Pole, open & enclosed General purpose current Maximum ratings UL Listed Maximum motor horsepower ratings 200V 230V 460/40V 575/600V UL rated Open type NEMA 1 (Indoor metal) Catalog List Catalog List number price number price B25SY-1 $ 3111 B25SY1-1 $ B30SY B30SY B40SY B40SY B50SY B50SY B63SY B63SY B75SY B75SY A110SY A110SY1-1 10, EH145SY EH145SY1-1 10, EH175SY-1 13,449 EH175SY1-1 14, EH210SY-1 15,369 EH210SY1-1 16, EH260SY-1 16,275 EH260SY1-1 17, EH300SY-1 21,375 EH300SY1-1 24, EH450SY-1 26,575 EH450SY1-1 2, EH550SY-1 33,61 EH550SY1-1 35, EH700SY-1 43,940 EH700SY1-1 45, EH00SY-1 47,661 EH00SY1-1 49,797 NEMA rated NEMA size Continuous current 1YD BN25SY-1 $ 3111 BN25SY1-1 $ YD BN50SY BN50SY YD BN75SY BN75SY YD EHN145SY EHN145SY1-1 10,215 5YD EHN260SY-1 16,275 EHN260SY1-1 17,607 6YD EHN550SY-1 33,61 EHN550SY1-1 35,17 7YD EHN00SY-1 47,661 EHN00SY1-1 49,797 Overload Relay suffix code. Select from the Overload Relay Selection chart on back cover fold out page. Coil voltage selection chart Hz Contr. Volts Control transformers type / / / / A,B,EH F G 1 B 2 C A,B F EH N 1 J 3 M 5 DC A,B,EH Y W P Q R T For other voltages, consult factory. 24 & 4VAC coils are not available for sizes EH450 - EH00. For these applications, use an interposing control relay. Coil voltage selection All catalog numbers include a 120V coil. To select other coil voltages, substitute the code from the Coil Voltage Selection Chart for the first digit after the dash in the catalog number. D.C. operated starters If DC operation is required, consult factory. REDUCED VOLTAGE STARTERS: Selection: Circuit diagrams: Approximate dimensions: Open Enclosed Type A, B, EH Discount schedule WD WDE

7 Reduced voltage starters Wye-delta closed transition NEMA 3R NEMA 12 NEMA 4 NEMA 4X (Outdoor Metal) (Metal Dustight) (Watertight) (Stainless Steel) Catalog List Catalog List Catalog List Catalog List number price number price number price number price UL rated B25SY3-1 $ 3747 B25SY2-1 $ 3747 B25SY4-1 $ 367 B25SYX-1 $ 4300 B30SY B30SY B30SY B30SYX B40SY B40SY B40SY B40SYX B50SY B50SY B50SY B50SYX B63SY B63SY B63SY B63SYX B75SY B75SY B75SY B75SYX A110SY3-1 11,271 A110SY2-1 11,271 A110SY4-1 11,913 A110SYX-1 12,900 EH145SY3-1 11,415 EH145SY2-1 11,415 EH145SY4-1 12,057 EH145SYX-1 13,300 EH175SY3-1 15,315 EH175SY2-1 15,315 EH175SY4-1 1,957 EH175SYX-1 20,150 EH210SY3-1 1,321 EH210SY2-1 1,321 EH210SY4-1 20,121 EH210SYX-1 21,600 EH260SY3-1 19,227 EH260SY2-1 19,227 EH260SY4-1 21,027 EH260SYX-1 22,300 EH300SY3-1 23,327 EH300SY2-1 23,327 EH300SY4-1 25,127 EH300SYX-1 27,125 EH450SY3-1 27,500 EH450SY2-1 27,500 EH450SY4-1 30,220 EH450SYX-1 32,450 EH550SY3-1 3,067 EH550SY2-1 3,067 EH550SY4-1 40,317 EH550SYX-1 44,600 EH700SY3-1 4,499 EH700SY2-1 4,499 EH700SY4-1 50,422 EH700SYX-1 55,750 EH00SY3-1 52,047 EH00SY2-1 52,047 EH00SY4-1 54,297 EH00SYX-1 59,150 NEMA rated BN25SY3-1 $ 3747 BN25SY2-1 $ 3747 BN25SY4-1 $ 367 BN25SYX-1 $ 4300 BN50SY BN50SY BN50SY BN50SYX BN75SY BN75SY BN75SY BN75SYX EHN145SY3-1 11,415 EHN145SY2-1 11,415 EHN145SY4-1 12,057 EHN145SYX-1 13,300 EHN260SY3-1 19,227 EHN260SY2-1 19,227 EHN260SY4-1 21,027 EHN260SYX-1 22,300 EHN550SY3-1 3,067 EHN550SY2-1 3,067 EHN550SY4-1 40,317 EHN550SYX-1 44,600 EHN00SY3-1 52,047 EHN00SY2-1 52,047 EHN00SY4-1 54,297 EHN00SYX-1 59,150 Overload Relay suffix code. Select from the Overload Relay Selection chart on back cover fold out page. REDUCED VOLTAGE STARTERS: Selection: Circuit diagrams: Approximate dimensions: Open Enclosed Type A, B, EH Discount schedule WD WDE.7

8 Reduced voltage starters Part winding non-reversing 3 Pole, open & enclosed General purpose current Maximum ratings UL Listed Maximum motor horsepower ratings 200V 230V 460/40V 575/600V UL rated Open type NEMA 1 (Indoor metal) Catalog List Catalog List number price number price B25SH-1 $ 127 B25SH1-1 $ B30SH B30SH B40SH B40SH B50SH B50SH B63SH B63SH B75SH B75SH A110SH A110SH EH145SH EH145SH EH175SH EH175SH EH210SH EH210SH EH260SH-1 11,166 EH260SH1-1 11, EH300SH-1 20,394 EH300SH1-1 21, EH450SH-1 24,000 EH450SH1-1 24, EH550SH-1 22,590 EH550SH1-1 2, EH700SH-1 2,105 EH700SH1-1 34, EH00SH-1 33,996 EH00SH1-1 37,776 NEMA rated NEMA size Continuous current 1PW BN25SH-1 $ 127 BN25SH1-1 $ PW BN50SH BN50SH PW BN75SH BN75SH PW EHN145SH EHN145SH PW EHN260SH-1 11,166 EHN260SH1-1 11,26 6PW EHN550SH-1 22,590 EHN550SH1-1 2,625 7PW EHN00SH-1 33,996 EHN00SH1-1 37,776 Overload Relay suffix code. Select from the Overload Relay Selection chart on back cover fold out page. Coil voltage selection chart Hz Contr. Volts Control transformers type / / / / A,B,EH F G 1 B 2 C A,B F EH N 1 J 3 M 5 DC A,B,EH Y W P Q R T For other voltages, consult factory. 24 & 4VAC coils are not available for sizes EH450 - EH00. For these applications, use an interposing control relay. Coil voltage selection All catalog numbers include a 120V coil. To select other coil voltages, substitute the code from the Coil Voltage Selection Chart for the first digit after the dash in the catalog number. D.C. operated starters If DC operation is required, consult factory. REDUCED VOLTAGE STARTERS: Selection: Circuit diagrams: Approximate dimensions: Open Enclosed Type A, B, EH Discount schedule PW PWE

9 Reduced voltage starters Part winding non-reversing NEMA 3R NEMA 12 NEMA 4 NEMA 4X (Outdoor Metal) (Metal Dustight) (Watertight) (Stainless Steel) Catalog List Catalog List Catalog List Catalog List number price number price number price number price UL rated B25SH3-1 $ 1914 B25SH2-1 $ 1914 B25SH4-1 $ 2034 B25SHX-1 $ 2425 B30SH B30SH B30SH B30SHX B40SH B40SH B40SH B40SHX B50SH B50SH B50SH B50SHX B63SH B63SH B63SH B63SHX B75SH B75SH B75SH B75SHX A110SH A110SH A110SH A110SHX EH145SH EH145SH EH145SH EH145SHX EH175SH EH175SH EH175SH4-1 EH175SHX EH210SH3-1 11,046 EH210SH2-1 11,046 EH210SH4-1 11,6 EH210SHX-1 12,700 EH260SH3-1 13,446 EH260SH2-1 13,446 EH260SH4-1 15,246 EH260SHX-1 17,400 EH300SH3-1 22,60 EH300SH2-1 22,60 EH300SH4-1 24,40 EH300SHX-1 26,150 EH450SH3-1 27,726 EH450SH2-1 27,726 EH450SH4-1 2,36 EH450SHX-1 30,175 EH550SH3-1 31,625 EH550SH2-1 31,625 EH550SH4-1 32,267 EH550SHX-1 33,275 EH700SH3-1 37,314 EH700SH2-1 37,314 EH700SH4-1 37,956 EH700SHX-1 39,600 EH00SH3-1 41,376 EH00SH2-1 41,376 EH00SH4-1 41,694 EH00SHX-1 44,100 NEMA rated BN25SH3-1 $ 1914 BN25SH2-1 $ 1914 BN25SH4-1 $ 2034 BN25SHX-1 $ 2425 BN50SH BN50SH BN50SH BN50SHX BN75SH BN75SH BN75SH BN75SHX EHN145SH EHN145SH EHN145SH EHN145SHX EHN260SH3-1 13,446 EHN260SH2-1 13,446 EHN260SH4-1 15,246 EHN260SHX-1 17,400 EHN550SH3-1 31,625 EHN550SH2-1 31,625 EHN550SH4-1 32,267 EHN550SHX-1 33,275 EHN00SH3-1 41,376 EHN00SH2-1 41,376 EHN00SH4-1 41,694 EHN00SHX-1 44,100 Overload Relay suffix code. Select from the Overload Relay Selection chart on back cover fold out page. REDUCED VOLTAGE STARTERS: Selection: Circuit diagrams: Approximate dimensions: Open Enclosed Type A, B, EH Discount schedule PW PWE.9

10 Circuit diagrams for reduced voltage starters Autotransformer & part winding Autotransformer An autotransformer starter reduces inrush current by using a transformer in the line just ahead of the motor to step down the voltage applied to the motor terminals. By reducing the voltage, the current drawn from the line is reduced during start-up. When the motor is up to speed and the setting time on the timer has expired, the autotransformer is bypassed. The 1S contactor drops out, the run contactor closes, and the 2S contactor opens, proving full voltage to the motor. The ABB autotransformer starter is a closed transition type meaning that the motor remains connected to the line during the entire acceleration period. The transformer has three taps which provide 50%, 65% and 0% of full line voltage. At delivery, the transformer is connected to the 65% tap; the inrush current will be reduced to 42% of normal; and the starting torque will be reduced to 42%. The autotransformer starter can be used for any squirrel-cage motor. Incoming Lines A B C Circuit Protective Device or Incoming Line Pad (if specified) CHFU CCT H1 H3 (if specified) CXFU XF 6 O L OTT L1 L1 L2 L2 L3 L RUN TR RUN RUN RUN 1S A1 A2 CR/TR 2S 2S 2S 2S 1S A1 A2 T1 T1 T2 T2 T3 T3 2S 100% 100% 2S A1 A2 0% SAT SAT 0% RUN IST ISCR 65% 65% 50% 50% L1 L2 A1 CR-1 A2 TR 1S 0% 1S 1S 0% Jumper T1 T A1 A2 RUN RUN L1 L A1 A2 OL T1 T2 T3 X1 CHFU H2 X2 Legend H4 Connect per voltage specified ISR Mechanical Interlock (if used) Run Contactor Incomplete Sequence Timer Incomplete Sequence Control Relay Starting Auto-Transformer Over-Temperature Thermostat (on SAT) Terminal Block Connection Point at Terminal Block Connection Point on Device with Number Part winding The part winding starter reduces inrush current by using two different sets of windings in the motor. Therefore, part winding starters can be used only with motors having stator windings divided into two equal parts with the terminals of each part available for external connection. The part winding starter consists of two across the line starters and a timer. The first starter is used to connect one winding of the motor across the line. The starting current from one winding will be about 50% of the starting current if both windings were connected. The starting torque is correspondingly 50%. Because the starting torque is so low and will not increase when only one winding is connected, the motor may not begin to accelerate. Therefore, the time delay for the second winding to be energized should not be more than 4 seconds. When the second wining is energized, the inrush current will increase depending upon the speed the motor has when the second winding is energized. Incoming Lines A B C Circuit Protective Device Busbar (if used) or Wire L1 L2 L3 1M 1OL Connect per CHFU CHFU voltage specified CCT (if specified) H1 H3 H2 H4 CXFU X2 6 1OL 2OL XF X L1 L2 L3 1M M A1 A2 CR TR CR A1 A2 2M TR 6 2OL 67 A1 A2 T7 T T9 To part-winding motor RUN- IST- ISR- SAT- OTT- TB CCT- Control Circuit Transformer CHFU- CCT Primaryary Fuse CXFU- CCT Secondary Fuse XF- Control Power Connection Point CR,CR1- Control Relays CT- Current Transformer TR- Timing Relay OL- Overload Relay 1S- Shorting Contactor 2S- Starting Contactor Legend CCT- Control Circuit Transformer CHFU- CCT Primary Fuse CXFU- CCT Secondary Fuse XF- Control Power Connection Point 1M- First Main Contactor 2M- Second Main Contactor CR- Control Relays (31) CT- Current Transformer OL- Overload Relay - Connection Point at Terminal Block 13- Connection Point on Device with Number REDUCED VOLTAGE STARTERS: Selection: Circuit diagrams: Approximate dimensions:

11 Circuit diagrams for reduced voltage starters Wye-delta Wye-delta, open transition The wye-delta open transition starter starts the motor by closing the S and 1M contactors which energize the windings in wye. The inrush current in wye is reduced to 33% of what it would be if the motor was started with an across the line starter. The starting time in wye is adjustable with a timer. After the elapsed time, the S contactor opens which closes the 2M contactor; there is a short period (about 50ms) when the motor is not energized; and then the motor runs full voltage in delta. A wye-delta starter requires a wye-delta wound motor with all six leads terminated outside the motor housing. Incoming Lines A B C Circuit Protective Device (if specified) L1 L2 L3 L1 L2 L3 L1 L2 L3 1M 2M S OL Bus Bar Mech. Intlk. T6 T4 T5 To Wye-Delta Motor CCT- CHFU- CXFU- XF- CR,CR1- CT- OL- PR- CHFU CCT H1 H3 (if specified) XF CXFU X1 Bus Bar CHFU H2 X2 H4 6 O L M TR S A1 A2 CR/TR Legend Control Circuit Transformer CCT Primaryary Fuse CCT Secondary Fuse Control Power Connection Point Control Relays Current Transformer Overload Relay Pilot Relay A1 A2 S S PR 43 1M A1 A2 1M TR- 1M - 2M- S- TB PR Connect per voltage specified A1 A2 2M A1 A1 A2 CR-1 A2 (If Used) Mechanical Interlock Timing Relay First Contactor Second Main Contactor Shorting Contactor Terminal Block Connection Point at Terminal Block Connection Point on Device with Number Wye-delta, closed transition The wye-delta closed transition starter works the same way as the open transition wye-delta starter except the closed transition version utilizes a set of resistors during the transition from start to run (wye to delta connection). These resistors eliminate the open circuit and prevent transient currents. Incoming Lines A B C CHFU CHFU Circuit CCT H1 H3 H2 H4 Protective Device (if specified) (if specified) XF CXFU X1 X2 6 O L IST Connect per voltage specified ISR ISR L1 L2 L3 L1 L2 L3 L1 L2 L3 S 1M 2M Mech. Intlk. OL Bus Bar 1 Bus Bar L1 L2 A1 A2 Jumper TR T 67 6 A1 A M T A1 S A2 CR/TR A1 A2 S S PR M A1 A2 1M Mechanical Interlock L1 L2 L3 T PR A1 A2 2M T6 T4 T5 To Wye-Delta Motor R E R R E E S S S A1 A2 CR-1 A1 A2 (If Used) Legend CCT- CHFU- CXFU- XF- CR,CR1- CT- OL- PR- TR- 1M - Control Circuit Transformer CCT Primaryary Fuse CCT Secondary Fuse Control Power Connection Point Control Relays Current Transformer Overload Relay Pilot Relay Timing Relay First Contactor Second Main Contactor Shorting Contactor Transition contactor Transition resistor ( s ) Incomplete sequence relay Incomplete sequence timer Terminal Block Connection Point at Terminal Block Connection Point on Device with Number REDUCED VOLTAGE STARTERS: Selection: Circuit diagrams: Approximate dimensions: M- S- T- RES- ISR- IST- TB

12 Approximate dimensions for reduced voltage starters Wye-delta, open w/cct Wye-delta, closed w/cct B C A Wye-delta, open transition Wye-delta closed transition B R X Stainless X Plastic B40 B R X Stainless X Plastic A95 & A R X Stainless EH R X Stainless EH175 EH X Stainless EH260 EH X Plastic EH450 EH R X Stainless EH700 EH R X Stainless B R X Stainless X Plastic B R X Stainless A95 & A X Stainless X Plastic EH X Stainless X Plastic EH R EH R EH R X Stainless EH R X Stainless X Plastic REDUCED VOLTAGE STARTERS: Selection: Circuit diagrams: Approximate dimensions:

13 Approximate dimensions for reduced voltage starters Wye-delta, open combination, non-fused Wye-delta, open combination, fused B C A Wye-delta, open transition,combination, non-fused B R X Stainless X Plastic Wye-delta, open transition,combination, fused B R X Stainless X Plastic B40 B R X Stainless X Plastic A95 & A EH EH175 EH EH260 EH R X Stainless X Plastic EH450 EH R X Stainless X Plastic EH700 EH B40 B R X Stainless X Plastic A95 & A EH EH175 EH EH260 EH R X Stainless EH450 EH EH700 EH REDUCED VOLTAGE STARTERS: Selection: Circuit diagrams: Approximate dimensions:

14 Approximate dimensions for reduced voltage starters Wye-delta, open combination, circuit breaker Wye-delta, closed combination, fused B C A Wye-delta, open transition, combination, circuit breaker B R X Stainless X Plastic Wye-delta, closed transition, combination, fused B R X Stainless X Plastic B40 B R X Stainless A95 & A R EH R EH175 EH R EH260 EH R X Stainless EH450 EH R X Stainless X Plastic EH700 EH R X Stainless X Plastic B40 B R X Stainless A95 & A R X Stainless EH R X Stainless EH175 EH R X Stainless EH260 EH R X Stainless X Plastic EH450 EH EH700 EH REDUCED VOLTAGE STARTERS: Selection: Circuit diagrams: Approximate dimensions:

15 Approximate dimensions for reduced voltage starters Wye-delta, closed combination, circuit breaker Part winding, combination, non-fused B C A Wye-delta, closed transition, combination, circuit-breaker Part winding, combination, non-fused B R X Stainless X Plastic B R X Stainless & A EH EH EH R X Stainless EH R X Stainless X Plastic EH B R X Stainless X Plastic B40 B R X Stainless X Plastic A95 & A R X Stainless X Plastic EH X Plastic EH175 EH R X Stainless X Plastic EH260 EH R X Stainless X Plastic EH450 EH R X Stainless X Plastic EH700 EH REDUCED VOLTAGE STARTERS: Selection: Circuit diagrams: Approximate dimensions:

16 Approximate dimensions for reduced voltage starters Part winding, combination, fused Part winding, combination, circuit breaker B C A Part winding, combination, fused Part winding combination, circuit breaker B R X Stainless X Plastic B R X Stainless X Plastic & A R X Stainless EH X Plastic EH X Plastic EH R X Stainless X Plastic EH EH B R X Stainless X Plastic B40 B R X Stainless X Plastic A95 & A R X Stainless X Plastic EH R X Stainless EH175 EH R X Stainless X Plastic EH260 EH X Plastic EH450 EH R X Stainless EH700 EH REDUCED VOLTAGE STARTERS: Selection: Circuit diagrams: Approximate dimensions:

17 Approximate dimensions for reduced voltage starters Part winding w/cct Autotransformer, combination, non-fused B C A Part winding w/cct B R X Stainless X Plastic Autotransformer, combination, non-fused B R X Stainless X Plastic B40 B R X Stainless X Plastic A95 & A R X Stainless X Plastic EH R X Stainless X Plastic EH175 EH R X Stainless EH260 EH R X Stainless EH450 EH X Stainless EH700 EH R X Stainless X Plastic B40 B R X Stainless X Plastic A95 & A EH EH175 EH EH260 EH R X Stainless X Plastic EH450 EH R X Stainless X Plastic EH700 EH REDUCED VOLTAGE STARTERS: Selection: Circuit diagrams: Approximate dimensions:

18 Approximate dimensions for reduced voltage starters Autotransformer, combination, fused Autotransformer, combination, circuit breaker B C A Autotransformer, combination, fused Autotransformer, combination, circuit breaker B R X Stainless X Plastic B R X Stainless A95 & A R X Stainless EH R X Stainless EH R X Stainless EH R X Stainless X Plastic EH EH B R X Stainless X Plastic B40 B R X Stainless A95 & A EH EH175 EH EH260 EH R X Stainless EH450 EH R X Stainless X Plastic EH700 EH REDUCED VOLTAGE STARTERS: Selection: Circuit diagrams: Approximate dimensions:

19 Approximate dimensions for reduced voltage starters Autotransformer w/cct B C A Autotransformer w/cct B R X Stainless X Plastic B R X Stainless A95 & A X Stainless X Plastic EH X Stainless X Plastic EH R EH R EH R X Stainless EH R X Stainless X Plastic REDUCED VOLTAGE STARTERS: Selection: Circuit diagrams: Approximate dimensions: