About Timer Relays
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Choosing an Electrical Switch
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Recessed Push-Button Switches

Often used to trigger alarms, these switches have a recessed button to prevent accidental activation. Mount under desks or in other discrete locations to avoid drawing attention.
For technical drawings and 3-D models, click on a part number.
Housing | Mounting | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Actuator Color | No. of Circuits Controlled | Switch Starting Position | Switch Action | No. of Terminals | Industry Designation | Features | Voltage | Dia. | Dp. | Material | Color | Fasteners Included | No. of Holes | Hole Dia. | Each | |
Plastic Actuator with Screw Terminals | ||||||||||||||||
Round | ||||||||||||||||
Red | 2 | 2 Off (Normally Open) | Springs Back (Momentary) | 7 | DPST-NO | Tamper Alert | 12V DC-30V DC | 3 3/16" | 1 1/4" | Plastic | Gray | No | 3 | 5/32" | 000000 | 000000 |
Design-Your-Own Rocker Switches
Choose from a variety of messages and colored lenses to combine a rocker with a base for a complete switch.
Bases with an on-on position designation alternate power between sets of terminals.
Note: Illuminated switches include a bulb. If wiring the switch and the bulb to the same circuit, the circuit voltage must not exceed bulb voltage.
For technical drawings and 3-D models, click on a part number.

No. of Positions | Position Illuminated | No. of Circuits Controlled | Switch Starting Position | Switch Action | No. of Terminals | Industry Designation | Position Designation | Color | Switching Current @ Voltage | Max. Voltage | Bulb Voltage | Quick-Disconnect Tab Wd. | Each | |
2 | Top/Bottom | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Stays Switched (Maintained) | 7 | SPDT | On-On | Black | 15 A @ 125 V AC, 15 A @ 28 V DC | 30V DC 250V AC | 14V DC | 0.25" | 0000000 | 000000 |
3 | Top/Bottom | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Stays Switched (Maintained) | 7 | SPDT | On-Off-On | Black | 15 A @ 125 V AC, 15 A @ 28 V DC | 30V DC 250V AC | 14V DC | 0.25" | 0000000 | 00000 |
3 | Top/Bottom | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | 7 | SPDT | (On)-Off-(On) | Black | 15 A @ 125 V AC, 15 A @ 28 V DC | 30V DC 250V AC | 14V DC | 0.25" | 0000000 | 00000 |
Rotary Switches

Control multiple devices with one switch. Turn the shaft to change switch positions. Each position closes a set of contacts per circuit, so you can select between multiple devices on one or more circuits.
For technical drawings and 3-D models, click on a part number.
Shaft | ||||||||||
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No. of Circuits Controlled | Switch Action | No. of Positions | No. of Terminals | Dp. Behind Panel | O'all Dia. | Lg. | Dia. | Each | ||
Nickel-Plated Brass with Black Plastic Knob | ||||||||||
With Solder Turret Terminals for 1/4" Panel Cutout Dia. | ||||||||||
1 | Stays Switched (Maintained) | 6 | 7 | 1" | 9/16" | 13/16" | 1/8" | 3 A @ 125 V AC, 2 A @ 30 V DC | 0000000 | 000000 |
Tamper-Resistant Magnetic Contact Alarm Switches



Prevent unauthorized use of doors or windows with a combination of coded magnets and contacts that wire to an alarm system. The coded magnets mean they can’t be bypassed with regular magnets. These switches actuate when the magnet comes within sensing distance of the switch and reset when the magnet moves away. Mount the magnet to your door or window and the switch to the frame. Connect the switch contacts to an alarm system, which will trigger when the magnet is pulled away as your door or window is opened.
Flush-mount switches are designed to mount against the door jam. They have a cord grip to reduce strain on your cord.
Surface-mount switches mount on the surface of your door. Those with a 1/2 conduit connection are ready to directly attach to your conduit.
For technical drawings and 3-D models, click on a part number.
No. of Circuits Controlled | Switch Starting Position | Industry Designation | Switching Current @ Voltage | Max. Sensing Distance | No. of Terminals | Conduit Trade Size | Lg. | Wd. | Ht. | Features | Environmental Rating | Each | |
Painted Zinc Housing with Screw Terminals | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Screw On—Flush Mount | |||||||||||||
2 | 1 Off (Normally Open) and 1 On (Normally Closed) | DPST-1NO/1NC | 0.2 A @ 30 V DC | 0.26" | 7 | __ | 4.33" | 1.38" | 1.26" | Auxiliary NO (Normally Open) Alarm, Nickel-Plated Brass Cord Grip | IP67 | 0000000 | 000000000 |
Screw On—Surface Mount | |||||||||||||
2 | 1 Off (Normally Open) and 1 On (Normally Closed) | DPST-1NO/1NC | 0.2 A @ 30 V DC | 0.26" | 7 | __ | 2.96" | 1.38" | 1.34" | Auxiliary NO (Normally Open) Alarm | IP67 | 0000000 | 00000000 |
2 | 1 Off (Normally Open) and 1 On (Normally Closed) | DPST-1NO/1NC | 0.2 A @ 30 V DC | 0.26" | 7 | 1/2 | 2.96" | 1.38" | 1.34" | Auxiliary NO (Normally Open) Alarm | IP67 | 0000000 | 00000000 |
Surface-Mount Motor Voltage Monitors

Protect electric motors from phase loss, phase reversal, overvoltage, undervoltage, and voltage imbalance. Also known as voltage-monitoring relays, these monitors cut power to a motor when a fault occurs.
For technical drawings and 3-D models, click on a part number.
Trip Time, sec. | Switching | |||||||||||
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Input Voltage Range | No. of Terminals | Control Power, W | Voltage Imbalance Adjustment | Automatic Reset | Delayed Automatic Reset | Current, A | Voltage | Ht. | Wd. | Specifications Met | Each | |
1 Circuit Controlled with 1 Off (Normally Open) or 1 On (Normally Closed)—SPDT | ||||||||||||
Three Phase | ||||||||||||
190-480V AC | 7 | 6 | 2%-8% | 1-30 | 1-500 | 10 | 240V AC | 3.5" | 2.08" | UL Listed | 0000000 | 0000000 |
475-600V AC | 7 | 6 | 2%-8% | 1-30 | 1-500 | 10 | 240V AC | 3.5" | 2.08" | UL Listed | 0000000 | 000000 |
Solid State Surface-Mount Timer Relays

Attach these relays to a flat surface using the mounting hole. They have no moving parts, so compared to mechanical switches, they require less maintenance, last longer, and are quieter.
Delayed switch-off (delay-on-break) relays activate with a switch instead of input voltage. When the switch is turned off, the relay remains on for a programmed amount of time before turning off. For example, a projector’s light is turned off with a switch, but its cooling fan continues to run for a set time.
Repeat cycle relays turn on for a duration, then off for the same duration. They alternate between the two cycles until input voltage is removed. A common example would be a flashing light.
Switch-on (single-shot) relays require a switch to activate the relay. They’ll stay on for a programmed amount of time. For example, lights in a storage room are turned on with a switch and stay on for a set time before turning off.
For technical drawings and 3-D models, click on a part number.
Timing Range | ||||||||||
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Number of Terminals | Input Voltage | Control Current, mA | No. of | Overall | Switching Current @ Voltage | Ht. | Wd. | Dp. | Each | |
Delayed Switch-Off (Delay-on-Break) | ||||||||||
1 Circuit Controlled with 1 Off (Normally Open)—SPST-NO | ||||||||||
7 | 12V DC | 217 | 1 | 0.25 sec.-5 sec. | 1 A @ 120 V AC | 2" | 2" | 0.88" | 00000000 | 000000 |
7 | 12V DC | 217 | 1 | 3 sec.-60 sec. | 1 A @ 120 V AC | 2" | 2" | 0.88" | 00000000 | 00000 |
Repeat Cycle | ||||||||||
1 Circuit Controlled with 1 Off (Normally Open)—SPST-NO | ||||||||||
7 | 120V AC | 36 | 1 | 0.05 sec.-1 sec. | 1 A @ 120 V AC | 2" | 2" | 0.88" | 00000000 | 00000 |
7 | 120V AC | 36 | 1 | 3 sec.-60 sec. | 1 A @ 120 V AC | 2" | 2" | 0.88" | 00000000 | 00000 |
7 | 120V AC | 36 | 1 | 30 sec.-10 min. | 1 A @ 120 V AC | 2" | 2" | 0.88" | 00000000 | 00000 |
Switch-On (Single-Shot) | ||||||||||
1 Circuit Controlled with 1 Off (Normally Open)—SPST-NO | ||||||||||
7 | 12V DC | 217 | 1 | 0.25 sec.-5 sec. | 1 A @ 120 V AC | 2" | 2" | 0.88" | 00000000 | 00000 |
7 | 12V DC | 217 | 1 | 0.5 sec.-10 sec. | 1 A @ 120 V AC | 2" | 2" | 0.88" | 00000000 | 00000 |
7 | 12V DC | 217 | 1 | 3 sec.-60 sec. | 1 A @ 120 V AC | 2" | 2" | 0.88" | 00000000 | 00000 |