Choosing an Electrical Switch
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Safety Limit Switches






Protect machinery and ensure the safety of personnel—these switches have positive-force contacts that will open the circuit when actuated even if a spring fails or the contacts stick. When an object in motion comes into contact with the actuator, it sends a signal to open or close a circuit. They’re often used on conveyor systems and bin filling operations. All are NEMA and IP rated for protection from washdowns.
Styles E and F have an actuator that allows you to adjust its height, making it easier to align switch with the target during installation.
NEMA 13 and IP67 rated switches are protected from oil/coolant spraying and temporary submersion.
For technical drawings and 3-D models, click on a part number.
Housing | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Style | No. of Circuits Controlled | Switch Starting Position | Switch Action | Industry Designation | Switching Current @ Voltage | Max. Voltage | Operating Temp. Range, °F | Actuator Ht. | Wire Connection Type | Lg. | Ht. | Dp. | Housing Material | Environmental Rating | Each | |
Plunger Actuator Style | ||||||||||||||||
A | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 600 V AC, 10 A @ 250 V DC | 600V AC 250V DC | -13° to 185° | 1.3" | Screw Terminals | 1.7" | 3.2" | 1.7" | Zinc | NEMA 4, NEMA 13, IP67 | 0000000 | 0000000 |
Roller Plunger Actuator Style | ||||||||||||||||
B | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 600 V AC, 10 A @ 250 V DC | 600V AC 250V DC | -13° to 185° | 1.8" | Screw Terminals | 1.7" | 3.2" | 1.7" | Zinc | NEMA 4, NEMA 13, IP67 | 0000000 | 000000 |
Roller Lever Actuator Style | ||||||||||||||||
C | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 240 V AC, 4 A @ 24 V DC | 240V AC 24V DC | -22° to 176° | 1.5" | Screw Terminals | 1.7" | 3.2" | 1.7" | Plastic | NEMA 4, IP65 | 00000000 | 000000 |
D | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 600 V AC, 10 A @ 250 V DC | 600V AC 250V DC | -40° to 185° | 2.5" | Screw Terminals | 1.7" | 3.2" | 1.7" | Zinc | NEMA 4, NEMA 13, IP67 | 0000000 | 000000 |
E | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 600 V AC, 10 A @ 250 V DC | 600V AC 250V DC | -40° to 185° | 0.9"-3" | Screw Terminals | 1.7" | 3.2" | 1.7" | Zinc | NEMA 4, NEMA 13, IP67 | 0000000 | 000000 |
Rod Actuator Style | ||||||||||||||||
F | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 240 V AC, 4 A @ 24 V DC | 240V AC 24V DC | -22° to 176° | 0.5"-8" | Screw Terminals | 1.7" | 3.2" | 1.7" | Plastic | NEMA 4, IP65 | 00000000 | 000000 |
Compact Safety Limit Switches






Shorter and thinner than other safety limit switches, these are sized to fit tight spaces. They protect machinery and ensure the safety of personnel. Positive-force contacts open the circuit when actuated, even if a spring fails or the contacts stick. When an object in motion comes into contact with the actuator, it sends a signal to open or close a circuit. They’re often used on conveyor systems and bin filling operations. All are NEMA and IP rated for protection from washdowns.
Styles E and F have an actuator that allows you to adjust its height, making it easier to align switch with the target during installation.
NEMA 13 and IP67 rated switches are protected from oil/coolant spraying and temporary submersion.
For technical drawings and 3-D models, click on a part number.
Housing | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Style | No. of Circuits Controlled | Switch Starting Position | Switch Action | Industry Designation | Switching Current @ Voltage | Max. Voltage | Operating Temp. Range, °F | Actuator Ht. | Wire Connection Type | Lg. | Ht. | Dp. | Housing Material | Environmental Rating | Each | |
Plunger Actuator Style | ||||||||||||||||
A | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 240 V AC, 4 A @ 24 V DC | 240V AC 24V DC | -22° to 176° | 0.5" | Screw Terminals | 1.2" | 2.4" | 1.2" | Plastic | NEMA 4, IP65 | 00000000 | 000000 |
A | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 300 V AC, 10 A @ 250 V DC | 300V AC 250V DC | -40° to 185° | 0.7" | Screw Terminals | 1.2" | 2.4" | 1.2" | Zinc | NEMA 4, NEMA 13, IP66, IP67 | 0000000 | 00000 |
Roller Plunger Actuator Style | ||||||||||||||||
B | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 240 V AC, 4 A @ 24 V DC | 240V AC 24V DC | -22° to 176° | 1.2" | Screw Terminals | 1.2" | 2.4" | 1.2" | Plastic | NEMA 4, IP65 | 00000000 | 00000 |
B | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 300 V AC, 10 A @ 250 V DC | 300V AC 250V DC | -40° to 185° | 1.1" | Screw Terminals | 1.2" | 2.4" | 1.2" | Zinc | NEMA 4, NEMA 13, IP66, IP67 | 0000000 | 000000 |
Roller Lever Actuator Style | ||||||||||||||||
C | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 240 V AC, 4 A @ 24 V DC | 240V AC 24V DC | -22° to 176° | 1.1" | Screw Terminals | 1.2" | 2.4" | 1.2" | Plastic | NEMA 4, IP65 | 00000000 | 000000 |
D | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 300 V AC, 10 A @ 250 V DC | 300V AC 250V DC | -40° to 185° | 2.1" | Screw Terminals | 1.2" | 2.4" | 1.2" | Zinc | NEMA 4, NEMA 13, IP66, IP67 | 0000000 | 00000 |
E | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 300 V AC, 10 A @ 250 V DC | 300V AC 250V DC | -40° to 185° | 0.9"-3" | Screw Terminals | 1.2" | 2.4" | 1.2" | Zinc | NEMA 4, NEMA 13, IP66, IP67 | 0000000 | 00000 |
Rod Actuator Style | ||||||||||||||||
F | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 600 V AC, 10 A @ 250 V DC | 600V AC 250V DC | -40° to 185° | 0.6"-5.8" | Screw Terminals | 1.2" | 2.4" | 1.2" | Plastic | NEMA 4, NEMA 13, IP66, IP67 | 00000000 | 00000 |