About Timer Relays
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Choosing an Electrical Switch
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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.
Switches for 13/32" panel cutout diameter require a knob.
For technical drawings and 3-D models, click on a part number.
Shaft | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| No. of Circuits Controlled | Switch Action | No. of Positions | No. of Terminals | Dp. Behind Panel | O'all Dia. | Lg. | Dia. | Each | ||
Plastic | ||||||||||
With Solder Lugs for 13/32" Panel Cutout Dia. | ||||||||||
| 2 | Stays Switched (Maintained) | 6 | 14 | 13/16" | 1" | 1 1/2" | 1/4" | 2.5 A @ 125 V AC, 0.35 A @ 125 V DC | 00000000 | 000000 |
Access-Delay Frame-Mounted Safety Switches
Delay access to hazardous areas until conditions are safe; use these switches with machines that take time to stop after they are turned off. Mount the switch to the door frame and mount the key to the door so that the key is inserted into the switch when the door is closed. When the door is pulled, the key is held in place with 225 lbs. of force until the switch receives a signal from a time-delay relay, motion sensor, or position sensor (not included) that the machine’s motion has stopped. After the motion has stopped, the key can be removed from the switch, releasing the access door. They’re often used with machine guards. All have positive-force, normally-closed contacts that will open a circuit when the switch is actuated even if a spring fails or the contacts stick. They’re rated for protection from washdowns and temporary submersion.
Style A and B have a key entry on the top and side of the switch.
For technical drawings and 3-D models, click on a part number.
Housing | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Style | No. of Circuits Controlled | Switch Starting Position | Switch Action | No. of Terminals | Industry Designation | Switching Current @ Voltage | Max. Voltage | Input Voltage | Holding Force, lbs. | Ht. | Wd. | Dp. | Wire Connection Type | Conduit Trade Size | Each | |
Positive-Force Normally Closed Contacts | ||||||||||||||||
| B | 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | Stays Switched (Maintained) | 14 | 3PST-1NO/2NC | 3 A @ 120 V AC, 2.5 A @ 24 V DC | 250V DC 240V AC | 24V DC | 225 | 3.7" | 3.5" | 1.4" | Screw Terminals | 1/2 | 0000000 | 0000000 |
Spade-Terminal Relays
Using a low-current signal, these relays are often used to control small motors and heaters. These relays attach to quick-disconnect terminals.
Relay-socket mount relays plug into a socket (sold separately).
Relay sockets mount directly on 35 mm DIN rail (also known as DIN 3 rail) for fast installation. Relay sockets with screw terminals can also mount to a flat surface.
For technical drawings and 3-D models, click on a part number.
Relays | Relay Sockets with Screw Terminals | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Terminals | Input Voltage | Control Current, mA | Switching Current @ Voltage | Maximum Switching Voltage | Ht. | Wd. | Dp. | Quick-Disconnect Tab Wd. | Each | Each | ||
4 Circuits Controlled with 4 Off (Normally Open) or 4 On (Normally Closed)—4PDT | ||||||||||||
Relay-Socket Mount | ||||||||||||
| 14 | 24V AC | 50 | 8 A @ 120 V AC/24 V DC | 300V AC | 1.1" | 0.9" | 1.6" | 0.11" | 000000000 | 000000 | 0000000 | 000000 |
| 14 | 24V AC | 63 | 15 A @ 120 V AC 12 A @ 24 V DC | 300V AC | 1.1" | 1.6" | 1.6" | 0.187" | 00000000 | 00000 | 0000000 | 00000 |
| 14 | 120V AC | 10 | 8 A @ 120 V AC/24 V DC | 300V AC | 1.1" | 0.9" | 1.6" | 0.11" | 000000000 | 00000 | 0000000 | 00000 |
| 14 | 120V AC | 13 | 15 A @ 120 V AC 12 A @ 24 V DC | 300V AC | 1.1" | 1.6" | 1.6" | 0.187" | 00000000 | 00000 | 0000000 | 00000 |
| 14 | 240V AC | 5 | 8 A @ 120 V AC/24 V DC | 300V AC | 1.1" | 0.9" | 1.6" | 0.11" | 000000000 | 00000 | 0000000 | 00000 |
| 14 | 240V AC | 6 | 15 A @ 120 V AC 12 A @ 24 V DC | 300V AC | 1.1" | 1.6" | 1.6" | 0.187" | 00000000 | 00000 | 0000000 | 00000 |
| 14 | 12V DC | 92 | 8 A @ 120 V AC/24 V DC | 300V AC | 1.1" | 0.9" | 1.6" | 0.11" | 000000000 | 00000 | 0000000 | 00000 |
| 14 | 12V DC | 125 | 15 A @ 120 V AC 12 A @ 24 V DC | 300V AC | 1.1" | 1.6" | 1.6" | 0.187" | 00000000 | 00000 | 0000000 | 00000 |
| 14 | 24V DC | 6 | 15 A @ 120 V AC 12 A @ 24 V DC | 300V AC | 1.1" | 1.6" | 1.6" | 0.187" | 00000000 | 00000 | 0000000 | 00000 |
| 14 | 24V DC | 46 | 8 A @ 120 V AC/24 V DC | 300V AC | 1.1" | 0.9" | 1.6" | 0.11" | 000000000 | 00000 | 0000000 | 00000 |
Open-Style Screw Terminal Relays
Optional covers protect contacts from dust and dirt.
Relays | Optional Covers | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Terminals | Input Voltage | Control Current, mA | Switching Current @ Voltage | Max. Switching Voltage | hp @ Switching Voltage | Ht. | Wd. | Dp. | Each | Each | ||
4 Circuits Controlled with 4 Off (Normally Open) or 4 On (Normally Closed)—4PDT | ||||||||||||
| 14 | 120V AC | 116 | 35 A @ 120 V AC 20 A @ 24 V DC | 120V AC | 1 hp @ 120 V AC 1 1/2 hp @ 240 V AC | 3.4" | 2.7" | 2.7" | 0000000 | 0000000 | 0000000 | 000000 |
Circuit Board Relays
Smaller than relays with electrical wiring, these relays fit in compact devices. Mount them through holes on circuit boards with their solder pin terminals. Use them to control heaters, fans, and other high-power components from a low-power circuit.
For technical drawings and 3-D models, click on a part number.
| Number of Terminals | Input Voltage | Control Current, mA | Switching Current @ Voltage | Max. Switching Voltage | Mechanical Life Cycles | Ht. | Wd. | Dp. | Pin Lg. | Each | |
Mechanical | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
2 Circuits Controlled with 2 Off (Normally Open)—DPST-NO | |||||||||||
| 14 | 12V DC | 240 | 100 A @ 400 V AC | 400V AC | 1,000,000 | 2.1" | 2.1" | 2.3" | 0.18" | 0000000 | 000000 |
| 14 | 24V DC | 120 | 100 A @ 400 V AC | 400V AC | 1,000,000 | 2.1" | 2.1" | 2.3" | 0.18" | 0000000 | 00000 |
Network-Enabled Relays
With a built-in web server, these relays can be remotely controlled over any IP network, including the Internet. They connect to your network either wirelessly or with an Ethernet cable (not included). No programming or software is required to operate these relays. Instead, use your web browser to input the relay’s IP address and the website guides you through simple menus and drop-down lists to set your parameters. Alternatively, you can use these relays with a PLC or without a computer at all if you use one relay as a controller for another relay.
Each circuit has a digital input that can be used to control the relay or a remote relay over the IP network. You could also use the digital input to monitor a separate device, such as a push-button or door alarm switch. These relays can be set to automatically restart network devices, such as computers, even when they fail to respond to relay signals. LED indicators let you know if there’s input and output voltage and if the network is connected and active. All meet at least one safety standard.
Mount these relays on 35 mm DIN rail (also known as DIN 3 rail) for fast installation. They also mount to flat surfaces.
Relays that control 2 circuits can also be programmed from a downloadable app or programs written in BASIC script, making them easy to customize. The website logs and stores data and device information.
Power over Ethernet (PoE) compatible relays can receive power from PoE cables (not included).
For technical drawings and 3-D models, click on a part number.
Digital Inputs | Digital Outputs | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Terminals | Voltage | No. of | Voltage | No. of | Control Current, A | Switching Current @ Voltage | Max. Switching Voltage | Ht. | Wd. | Dp. | Connection Type | Power Over Ethernet Standard | Communication Protocol | Operating System Compatibility | Features | Each | |
2 Circuits Controlled with 1 Off (Normally Open) or 1 On (Normally Closed)—SPDT | |||||||||||||||||
| 14 | 4V DC, 6V DC, 12V DC, 24V DC | 2 | 3V DC, 5V DC, 11V DC, 23V DC | 2 | 3 | 3 A @ 24 V DC | 24V DC | 3.9" | 1.4" | 3.1" | Ethernet | __ | Modbus TCP/IP, SMTP | Android 6.0 or Later, iOS 9 or Later, Windows XP or Later | LED Indicators, Data Logging Capabilities | 0000000 | 0000000 |
| 14 | 4V DC, 6V DC, 12V DC, 24V DC | 2 | 11V DC | 2 | 3 | 3 A @ 24 V DC | 24V DC | 3.9" | 1.4" | 3.1" | Ethernet | PoE, Type 1 | Modbus TCP/IP, SMTP | Android 6.0 or Later, iOS 9 or Later, Windows XP or Later | LED Indicators, Data Logging Capabilities | 0000000 | 000000 |
Safety Relays with Diagnostic Capabilities
Control and diagnose issues with safety-critical circuits. These relays have a microprocessor that monitors safety components, such as emergency stops and light curtains, and sends a signal to stop the operation if a failure is detected and restart when the issue is resolved. They also help with diagnostic tasks because of their feedback circuit, which allows basic relays to communicate their status back to the safety relay. These relays have a duplicate set of input and output signals, so they’ll still stop the controlled device if one of the inputs fails.
IP20 rated, they have recessed terminals which prevent fingers and other objects from touching live circuits. These relays have been tested to multiple safety standards and can help achieve PL, SIL, or CAT system ratings. They also meet ISO and IEC standards for machine safety.
Mount them to 35 mm DIN rail (also known as DIN 3 Rail) for fast installation.
Auxiliary contact blocks (sold separately) allow you to control more components, such as signaling devices or basic relays.
For technical drawings and 3-D models, click on a part number.
| Number of Terminals | Input Voltage | Switching Current @ Voltage | Max. Switching Voltage | Ht. | Wd. | Dp. | For Use With | Max. System Safety Rating | Features | Each | |
2 Circuits Controlled | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
2 Off (Normally Open) | |||||||||||
| 14 | 24V DC | 2 A @ 240 V AC 1.5 A @ 24 V DC | 250V AC | 4.9" | 0.69" | 4.3" | Emergency Stops, Light Curtains | PLe, SIL3, CAT 4, 250V | Auxiliary PNP Output, LED Indicator | 0000000 | 0000000 |
| Number of Terminals | Input Voltage | Switching Current @ Voltage | Max. Switching Voltage | Ht. | Wd. | Dp. | Features | Each | |
5 Safety Outputs | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 16 | 24V AC, 24V DC | 2.5 A @ 24 V DC 3 A @ 240 V AC | 250V AC, 250V DC | 3.9" | 0.9" | 4.5" | __ | 0000000 | 0000000 |
4 Delayed Safety Outputs | |||||||||
| 16 | 24V DC | 3 A @ 240 V AC 3 A @ 24 V DC | 250V AC, 250V DC | 3.9" | 0.9" | 4.5" | Time Delay | 0000000 | 000000 |
Solid State DIN-Rail Mount Multifunction Timer Relays
For fast installation, mount these relays to 35 mm DIN rail (also known as DIN 3 rail). They also mount to flat surfaces. With no moving parts, these solid state relays last longer and require less maintenance, are quieter, and switch faster than mechanical relays. They provide a variety of timing functions in one relay.
Use relays with DIP switches for more precise control than knobs. They make it easier to set multiple relays to the same timing range.
Relays that control 4 circuits require a relay socket (sold separately) to attach to DIN rail.
Timer Relays | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Timing Range | Relay Sockets | |||||||||||||
| No. of Terminals | Input Voltage | Control Current, mA | Timer Relay Function | No. of | O'all | Switching Current @ 240V AC | Max. Switching Voltage | Ht. | Wd. | Dp. | Each | Each | ||
Relays with Knob | ||||||||||||||
4 Circuit Control with 4 Off (Normally Open) or 4 On (Normally Closed)—4PDT | ||||||||||||||
| 14 | 120V AC | 15 | Delayed Start (Delay-on-Make) Interval Repeat Cycle | 4 | 0.1 sec.-10 min. | 3A | 250V AC | 1.1" | 0.9" | 2.1" | 000000 | 0000000 | 0000000 | 000000 |
| 14 | 240V AC | 9 | Delayed Start (Delay-on-Make) Interval Repeat Cycle | 4 | 0.1 sec.-10 min. | 3A | 250V AC | 1.1" | 0.9" | 2.1" | 000000 | 000000 | 0000000 | 00000 |
| 14 | 24V DC | 45 | Delayed Start (Delay-on-Make) Interval Repeat Cycle | 4 | 0.1 sec.-10 min. | 3A | 250V AC | 1.1" | 0.9" | 2.1" | 000000 | 000000 | 0000000 | 00000 |