About Motor Switches and Starters
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Manual Motor Starters
Provide on/off control for a motor and protect it from overloads. These starters shut off the motor if current exceeds the full-load current rating. The adjustable overload relay allows you to set the exact overload current you need. All have auxiliary contacts to send a signal or connect to another device, such as an alarm or indicating light.
Note: The full-load current rating of your motor must fall within the starter’s overload current range. Match input 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).
Add auxiliary contact blocks to send a signal or connect to another device, such as an alarm or indicating light.
For technical drawings and 3-D models, click on a part number.
Motor Starters | Auxiliary Contact Blocks | Conduit and Cord Grip Thread Adapters | Enclosures with On/Off Lever | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overload Current, A | Voltage | Electrical Phase (hp) | No. of Poles | Ht. | Wd. | Wire Connection Type | UL File Number | Each | Each | Each | Each | ||||
| 1-1.6 | 600V AC | Single (1/10 hp @ 240 V AC) Three (3/4 hp @ 480 V AC) Three (3/4 hp @ 600 V AC) | 3 | 3.5" | 1.77" | Screw-Clamp Terminals | E345003 | 00000000 | 0000000 | 00000000 | 000000 | 000000 | 000000 | 00000000 | 0000000 |
| 1.6-2.5 | 600V AC | Single (1/6 hp @ 240 V AC) Three (1/2 hp @ 240 V AC) Three (1 hp @ 480 V AC) Three (1-1/2 hp @ 600 V AC) | 3 | 3.5" | 1.77" | Screw-Clamp Terminals | E345003 | 00000000 | 000000 | 00000000 | 00000 | 000000 | 00000 | 00000000 | 000000 |
| 2.5-4 | 600V AC | Single (1/8 hp @ 120 V AC) Single (1/3 hp @ 240 V AC) Three (1 hp @ 240 V AC) Three (2 hp @ 480 V AC) Three (3 hp @ 600 V AC) | 3 | 3.5" | 1.77" | Screw-Clamp Terminals | E345003 | 00000000 | 000000 | 00000000 | 00000 | 000000 | 00000 | 00000000 | 000000 |
| 4-6.3 | 600V AC | Single (1/4 hp @ 120 V AC) Single (1/2 hp @ 240 V AC) Three (1 1/2 hp @ 240 V AC) Three (3 hp @ 480 V AC) Three (5 hp @ 600 V AC) | 3 | 3.5" | 1.77" | Screw-Clamp Terminals | E345003 | 0000000 | 000000 | 00000000 | 00000 | 000000 | 00000 | 00000000 | 000000 |
| 6.3-10 | 600V AC | Single (1/2 hp @ 120 V AC) Single (1 1/2 hp @ 120 V AC) Three (3 hp @ 240 V AC) Three (5 hp @ 480 V AC) Three (7 1/2 hp @ 600 V AC) | 3 | 3.5" | 1.77" | Screw-Clamp Terminals | E345003 | 00000000 | 000000 | 00000000 | 00000 | 000000 | 00000 | 00000000 | 000000 |
| 8-12 | 600V AC | Single (1/2 hp @ 120 V AC) Single (2 hp @ 240 V AC) Three (3 hp @ 240 V AC) Three (7 1/2 hp @ 480 V AC) Three (10 hp @ 600 V AC) | 3 | 3.85" | 1.77" | Screw-Clamp Terminals | E345003 | 00000000 | 000000 | 00000000 | 00000 | 000000 | 00000 | 00000000 | 000000 |
| 10-16 | 600V AC | Single (1 hp @ 120 V AC) Single (2 hp @ 240 V AC) Three (5 hp @ 240 V AC) Three (10 hp @ 480 V AC) Three (10 hp @ 600 V AC) | 3 | 3.85" | 1.77" | Screw-Clamp Terminals | E345003 | 00000000 | 000000 | 00000000 | 00000 | 000000 | 00000 | 00000000 | 000000 |
| 16-20 | 600V AC | Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (5 hp @ 240 V AC) Three (10 hp @ 480 V AC) Three (15 hp @ 600 V AC) | 3 | 3.85" | 1.77" | Screw-Clamp Terminals | E345003 | 00000000 | 000000 | 00000000 | 00000 | 000000 | 00000 | 00000000 | 000000 |
| 20-25 | 600V AC | Single (2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (7 1/2 hp @ 240 V AC) Three (15 hp @ 480 V AC) Three (20 hp @ 600 V AC) | 3 | 3.85" | 1.77" | Screw-Clamp Terminals | E345003 | 00000000 | 000000 | 000000 | 00 | 000000 | 00000 | 000000 | 00 |
Build-Your-Own Manual Motor Starters
Indicating Light
and Steel Wall Plate
Power Indicating
Light and Steel Housing
Assemble your own motor starter by combining a switch and a thermal overload element.
NEMA 4 and 12 rated switches are protected from washdowns and oil/coolant dripping.
Thermal overload elements shut motors off if current exceeds the full-load current rating. To Order: Please specify the full-load current rating of your motor. If the full-load current rating is not shown on the motor’s faceplate, estimate the current rating (given the motor’s horsepower and voltage).
For technical drawings and 3-D models, click on a part number.
| No. of Circuits Controlled | Electrical Phase (hp) | Ht. | Wd. | Wire Connection Type | Environment | Environmental Rating | Each | |
With Power-Indicating Light | ||||||||
|---|---|---|---|---|---|---|---|---|
Steel Wall Plate | ||||||||
| 1 | Single (1 hp @ 115 V AC) Single (1 hp @ 230 V AC) | 4.5" | 2.8" | Screw Terminals | Indoor Only | __ | 0000000 | 0000000 |
| 2 | Single (3/4 hp @ 115 V DC) Single (3/4 hp @ 230 V DC) Single (1 hp @ 115 V AC) Single (1 hp @ 230 V AC) | 4.5" | 2.8" | Screw Terminals | Indoor Only | __ | 0000000 | 000000 |
Steel Housing | ||||||||
| 1 | Single (1 hp @ 115 V AC) Single (1 hp @ 230 V AC) | 4.3" | 2.8" | Screw Terminals | Indoor Only | NEMA 1 | 0000000 | 000000 |
| 2 | Single (3/4 hp @ 115 V DC) Single (3/4 hp @ 230 V DC) Single (1 hp @ 115 V AC) Single (1 hp @ 230 V AC) | 4.3" | 2.8" | Screw Terminals | Indoor Only | NEMA 1 | 0000000 | 000000 |
Without Power-Indicating Light | ||||||||
Steel Wall Plate | ||||||||
| 1 | Single (1 hp @ 115 V AC) Single (1 hp @ 230 V AC) | 4.5" | 2.8" | Screw Terminals | Indoor Only | __ | 0000000 | 00000 |
Steel Housing | ||||||||
| 1 | Single (1 hp @ 115 V AC) Single (1 hp @ 230 V AC) | 4.3" | 2.8" | Screw Terminals | Indoor Only | NEMA 1 | 0000000 | 000000 |
| 2 | Single (3/4 hp @ 115 V DC) Single (3/4 hp @ 230 V DC) Single (1 hp @ 115 V AC) Single (1 hp @ 230 V AC) | 4.3" | 2.8" | Screw Terminals | Indoor Only | NEMA 1 | 0000000 | 000000 |
Zinc Housing | ||||||||
| 1 | Single (1 hp @ 115 V AC) Single (1 hp @ 230 V AC) | 5.5" | 3.6" | Screw Terminals | Oily, Washdown | NEMA 4, NEMA 12 | 0000000 | 000000 |
| 2 | Single (3/4 hp @ 115 V DC) Single (3/4 hp @ 230 V DC) Single (1 hp @ 115 V AC) Single (1 hp @ 230 V AC) | 5.5" | 3.6" | Screw Terminals | Oily, Washdown | NEMA 4, NEMA 12 | 0000000 | 000000 |
Enclosed Heavy Duty Build-Your-Own Manual Motor Starters
Combine a switch with a thermal overload element to build a starter that can handle high-current-rated motors. All are housed in a durable steel enclosure. They’re also known as NEMA starters.
NEMA 12 rated switches are protected from oil/coolant dripping.
Thermal overload elements shut motors off if current exceeds the full-load current rating. Three elements are required. To Order: Please specify the full-load current rating of your motor. If the full-load current rating is not shown on the motor’s faceplate, estimate the current rating (given the motor’s horsepower and voltage).
For technical drawings and 3-D models, click on a part number.
| NEMA Contact Size | Electrical Phase (hp) | Housing Material | Ht. | Wd. | Dp. | Wire Connection Type | Environment | Environmental Rating | Specifications Met | Each | |
NEMA 1 Motor Starters | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| M0 | Three (2 hp @ 115 V AC) Three (3 hp @ 230 V AC) Three (5 hp @ 460 V AC) | Painted Steel | 7.6" | 4.7" | 5" | Screw Terminals | __ | NEMA 1 | UL Listed, CSA Certified | 0000000 | 0000000 |
| M1 | Three (3 hp @ 115 V AC) Three (7 1/2 hp @ 230 V AC) Three (10 hp @ 460 V AC) | Painted Steel | 7.6" | 4.7" | 5" | Screw Terminals | __ | NEMA 1 | UL Listed, CSA Certified | 0000000 | 000000 |
NEMA 12 Motor Starters | |||||||||||
| M0 | Three (2 hp @ 115 V AC) Three (3 hp @ 230 V AC) Three (5 hp @ 460 V AC) | Painted Steel | 9.4" | 5.5" | 5" | Screw Terminals | Oily | NEMA 12 | UL Listed, CSA Certified | 0000000 | 00000000 |
| M1 | Three (3 hp @ 115 V AC) Three (7 1/2 hp @ 230 V AC) Three (10 hp @ 460 V AC) | Painted Steel | 9.4" | 5.5" | 5" | Screw Terminals | Oily | NEMA 12 | UL Listed, CSA Certified | 0000000 | 00000000 |
| Each | ||
| 000000 | 000000 |
Heavy Duty Build-Your-Own Manual Motor Starters
Combine a switch and a thermal overload element to build a starter that can handle high-current-rated motors. They’re also known as NEMA starters.
Thermal overload elements shut motors off if current exceeds the full-load current rating. Three elements are required. To Order: Please specify the full-load current rating of your motor. If the full-load current rating is not shown on the motor’s faceplate, estimate the current rating (given the motor’s horsepower and voltage).
For technical drawings and 3-D models, click on a part number.
| Each | ||
| 000000 | 000000 |