About Hazardous Location Environmental Ratings
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About Electric Motors
When replacing a motor, use the information on your motor’s nameplate to guide your selection.
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About Motor Switches and Starters
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Choosing an Electrical Switch
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Hazardous Location Base-Mount AC Motors
These motors are rated for environments where hazardous material is present. They are continuous duty and mount horizontally. You can wire for clockwise or counterclockwise rotation; instructions are included. The base is welded to the enclosure.
Motors with automatic overload protection turn off in overload conditions to prevent motor damage and start automatically after they cool.
Hazardous location environmental ratings indicate whether manufacturers have included safety features in products to facilitate their safe use in a hazardous environment. Before selecting a product for a hazardous location, ensure it is rated for your environment.
Overall | Shaft | Insulation | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Power, hp | Max. Speed, rpm | Full Load Current, A | Inverter Rated | Lg. | Wd. | Ht. | Dia | Lg. | Center to Base | Shaft Type | Overload Protection Type | Class | Max. Temp, °F | Environmental Rating | Each | |
115/208/230 Volts AC, Single Phase | ||||||||||||||||
NEMA 48 | ||||||||||||||||
| 1/4 | 1,800 | 5.0/2.6/2.5 | No | 12 7/8" | 7 1/4" | 8 1/8" | 1/2" | 1 1/2" | 3" | D-Profile | Automatic | B | 104° | NEC Class I Divisions 1, 2 Group D NEC Class II Divisions 1, 2 Groups F, G | 0000000 | 0000000 |
NEMA 56 | ||||||||||||||||
| 1/2 | 1,800 | 7.4/3.9/3.7 | No | 14 1/4" | 8 3/8" | 9 1/8" | 5/8" | 1 7/8" | 3 1/2" | Keyed | Automatic | B | 104° | NEC Class I Divisions 1, 2 Group D NEC Class II Divisions 1, 2 Groups F, G | 0000000 | 000000 |
115/230 Volts AC, Single Phase | ||||||||||||||||
NEMA 56 | ||||||||||||||||
| 1 | 1,800 | 12.4/6.2 | No | 15 1/4" | 8 3/8" | 9 1/8" | 5/8" | 1 7/8" | 3 1/2" | Keyed | Automatic | B | 104° | NEC Class I Divisions 1, 2 Group D NEC Class II Divisions 1, 2 Groups F, G | 0000000 | 00000000 |
208/230/460 Volts AC, Three Phase | ||||||||||||||||
NEMA 56 | ||||||||||||||||
| 3/4 | 1,800 | 3.2/3.0/1.5 | No | 14 1/4" | 8 3/8" | 9 1/8" | 5/8" | 1 7/8" | 3 1/2" | Keyed | Automatic | B | 104° | NEC Class I Divisions 1, 2 Group D NEC Class II Divisions 1, 2 Groups F, G | 0000000 | 000000 |
230/460 Volts AC, Three Phase | ||||||||||||||||
NEMA 145T | ||||||||||||||||
| 2 | 1,800 | 5.4/2.7 | Yes | 15 1/4" | 8 5/8" | 9 1/8" | 7/8" | 2 1/4" | 3 1/2" | Keyed | __ | F | 104° | NEC Class I Divisions 1, 2 Group D NEC Class II Divisions 1, 2 Groups F, G | 0000000 | 00000000 |
NEMA 56 | ||||||||||||||||
| 1 | 1,800 | 3.0/1.5 | Yes | 14 3/8" | 8 3/8" | 9 1/8" | 5/8" | 1 7/8" | 3 1/2" | Keyed | __ | F | 104° | NEC Class I Divisions 1, 2 Group D NEC Class II Divisions 1, 2 Groups F, G | 0000000 | 00000000 |
Hazardous Location Enclosed Motor Switches
Safely turn motors on and off near ignitable gases and dust—the housing on these switches seals in anything that could ignite flammable material. Made from aluminum, the housing is lightweight and durable. It guards against water, oil, and other materials that could cause damage. Even in harsh conditions, there’s no need to mount these switches inside an electrical panel.
You need to grip and twist the lever to actuate these switches, so they won’t accidentally turn on or off if something bumps into them. In addition to starting and stopping motors, they work with other circuits, such as lighting and electric heat circuits. They don’t provide overload protection.
Switching | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Circuits Controlled | Electrical Phase (hp) | Switch Starting Position | Industry Designation | Current, A | Voltage | Ht. | Wd. | Wire Connection Type | Environmental Rating | Specifications Met | Each | |
Stays Switched (Maintained) | ||||||||||||
| 2 | Single (3 hp @ 240 V AC) | 2 Off (Normally Open) | DPST-NO | 30 | 600V AC | 6.5" | 3" | Screw Terminals | NEC Class I Divisions 1, 2 Groups C, D NEC Class II Divisions 1, 2 Groups E, F, G NEMA 7 NEMA 9 | UL Listed, C-UL Listed, CSA Certified | 0000000 | 0000000 |
| 3 | Three (7 1/2 hp @ 240 V AC) | 3 Off (Normally Open) | 3PST-NO | 30 | 600V AC | 6.5" | 3" | Screw Terminals | NEC Class I Divisions 1, 2 Groups C, D NEC Class II Divisions 1, 2 Groups E, F, G NEMA 7 NEMA 9 | UL Listed, C-UL Listed, CSA Certified | 0000000 | 000000 |