About Motor Switches and Starters
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Heavy Duty Motor Starters
Sealed coils protect these switches against moisture, heat, dirt, and mechanical and thermal stress. They have a solid state overload relay that extends motor life in demanding applications and protects it from overloads—starters will shut the motor off if current exceeds the full-load current rating. The relay is adjustable; set it for the exact overload current needed. All have auxiliary contacts to send a signal or connect to another device, such as an alarm or indicating light. Also known as NEMA starters.
Note: The full-load current rating of your motor must fall within the starter’s overload current range. Match input voltage, also known as coil voltage, to your control circuit; motor voltage may be different. Look for the full-load current rating on the motor’s faceplate, or estimate the current rating (given the motor’s horsepower and voltage).
NEMA contact sizes 0 and 1 are universal mount and fit Cutler-Hammer, GE, and Square D installations.
For technical drawings and 3-D models, click on a part number.
Motor Starters | Replacement Coils | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Overload Current, A | Input Voltage | Electrical Phase (hp) | Tripping Accuracy | Ht. | Wd. | Each | Each | ||
Motor Starters with 1 Auxiliary Contact—1 Off (Normally Open) | |||||||||
NEMA Contact Size 0 | |||||||||
| 0.25-1 | 110V AC/ 240V AC | Three (1/6 hp @ 200 V AC) Three (1/6 hp @ 230 V AC) Three (1/3 hp @ 460 V AC) Three (1/2 hp @ 575 V AC) | ±1% | 7.4" | 4.3" | 00000000 | 0000000 | 00000000 | 0000000 |
| 0.75-3.4 | 110V AC/ 240V AC | Three (1/2 hp @ 200 V AC) Three (3/4 hp @ 230 V AC) Three (1 1/2 hp @ 460 V AC) Three (2 hp @ 575 V AC) | ±1% | 7.4" | 4.3" | 00000000 | 000000 | 00000000 | 000000 |
| 3-12 | 110V AC/ 240V AC | Three (2 hp @ 200 V AC) Three (2 hp @ 230 V AC) Three (5 hp @ 460 V AC) Three (5 hp @ 575 V AC) | ±1% | 7.4" | 4.3" | 00000000 | 000000 | 00000000 | 000000 |
| 5.5-22 | 110V AC/ 240V AC | Three (3 hp @ 200 V AC) Three (3 hp @ 230 V AC) | ±1% | 7.4" | 4.3" | 00000000 | 000000 | 00000000 | 000000 |
NEMA Contact Size 1 | |||||||||
| 3-12 | 110V AC/ 240V AC | Three (2 hp @ 200 V AC) Three (2 hp @ 230 V AC) Three (5 hp @ 460 V AC) Three (5 hp @ 575 V AC) | ±1% | 7.4" | 4.3" | 00000000 | 000000 | 00000000 | 000000 |
| 5.5-22 | 110V AC/ 240V AC | Three (3 hp @ 200 V AC) Three (3 hp @ 230 V AC) Three (10 hp @ 240 V AC) Three (10 hp @ 575 V AC) | ±1% | 7.4" | 4.3" | 00000000 | 000000 | 00000000 | 000000 |
| 10-40 | 110V AC/ 240V AC | Three (7 1/2 hp @ 200 V AC) Three (7 1/2 hp @ 230 V AC) | ±1% | 7.4" | 4.3" | 00000000 | 000000 | 00000000 | 000000 |
NEMA Contact Size 2 | |||||||||
| 13-52 | 110V AC/ 240V AC | Three (10 hp @ 200 V AC) Three (15 hp @ 230 V AC) Three (25 hp @ 460 V AC) Three (25 hp @ 575 V AC) | ±1% | 8.1" | 4.6" | 00000000 | 000000 | 00000000 | 000000 |
Enclosed Heavy Duty Motor Starters
Housed in a durable steel enclosure, these switches have sealed coils for protection against moisture, heat, dirt, and mechanical and thermal stress. They have a solid state overload relay that extends motor life in demanding applications and protects it from overloads—starters will shut the motor off if current exceeds the full-load current rating. The relay is adjustable; set it for the exact overload current needed. All have auxiliary contacts to send a signal or connect to another device, such as an alarm or indicating light. Also known as NEMA starters.
Note: The full-load current rating of your motor must fall within the starter’s overload current range. Match input voltage, also known as coil voltage, to your control circuit; motor voltage may be different. Look for the full-load current rating on the motor’s faceplate, or estimate the current rating (given the motor’s horsepower and voltage).
NEMA contact sizes 0 and 1 are universal mount and fit Cutler-Hammer, GE, and Square D installations.
For technical drawings and 3-D models, click on a part number.
Motor Starters | Replacement Coils | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Overload Current, A | Input Voltage | Electrical Phase (hp) | Tripping Accuracy | Ht. | Wd. | Environmental Rating | Each | Each | ||
Motor Starters with 1 Auxiliary Contact—1 Off (Normally Open) | ||||||||||
NEMA Contact Size 0 | ||||||||||
| 0.25-1 | 110V AC/ 240V AC | Three (1/6 hp @ 200 V AC) Three (1/6 hp @ 230 V AC) Three (1/3 hp @ 460 V AC) Three (1/2 hp @ 575 V AC) | ±1% | 11" | 6.4" | NEMA 1 | 00000000 | 0000000 | 00000000 | 0000000 |
| 0.75-3.4 | 110V AC/ 240V AC | Three (1/2 hp @ 200 V AC) Three (3/4 hp @ 230 V AC) Three (1 1/2 hp @ 460 V AC) Three (2 hp @ 575 V AC) | ±1% | 11" | 6.4" | NEMA 1 | 00000000 | 000000 | 00000000 | 000000 |
| 3-12 | 110V AC/ 240V AC | Three (2 hp @ 200 V AC) Three (2 hp @ 230 V AC) Three (5 hp @ 460 V AC) Three (5 hp @ 575 V AC) | ±1% | 11" | 6.4" | NEMA 1 | 00000000 | 000000 | 00000000 | 000000 |
| 5.5-22 | 110V AC/ 240V AC | Three (3 hp @ 200 V AC) Three (3 hp @ 230 V AC) | ±1% | 11" | 6.4" | NEMA 1 | 00000000 | 000000 | 00000000 | 000000 |
NEMA Contact Size 1 | ||||||||||
| 3-12 | 110V AC/ 240V AC | Three (2 hp @ 200 V AC) Three (2 hp @ 230 V AC) Three (5 hp @ 460 V AC) Three (5 hp @ 575 V AC) | ±1% | 11" | 6.4" | NEMA 1 | 00000000 | 000000 | 00000000 | 000000 |
| 5.5-22 | 110V AC/ 240V AC | Three (3 hp @ 200 V AC) Three (3 hp @ 230 V AC) Three (10 hp @ 460 V AC) Three (10 hp @ 575 V AC) | ±1% | 11" | 6.4" | NEMA 1 | 00000000 | 000000 | 00000000 | 000000 |
| 10-40 | 110V AC/ 240V AC | Three (7 1/2 hp @ 200 V AC) Three (7 1/2 hp @ 230 V AC) | ±1% | 11" | 6.4" | NEMA 1 | 00000000 | 000000 | 00000000 | 000000 |
NEMA Contact Size 2 | ||||||||||
| 13-52 | 110V AC/ 240V AC | Three (10 hp @ 240 V AC) Three (15 hp @ 230 V AC) Three (25 hp @ 460 V AC) Three (25 hp @ 575 V AC) | ±1% | 13.5" | 8" | NEMA 1 | 00000000 | 00000000 | 00000000 | 000000 |