About Timer Relays
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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.
Surface mount relays, also known as power relays, have a slot on the flange for mounting them to flat surfaces.
Relay-socket mount relays, also known as ice cube relays, offer three ways to connect. Plug them into a socket (sold separately), connect them with quick-disconnect terminals, or solder wires directly to the terminals.
Relay-socket/surface mount relays can plug into a socket or mount to a flat surface.
Relay sockets mount directly on 35 mm DIN rail (also known as DIN 3 rail) for fast installation. They can also mount to a flat surface.
| Number of Terminals | Input Voltage  | Control Current, mA | Maximum Switching Voltage | hp @ Switching Voltage | Ht. | Wd. | Dp. | Quick-Disconnect Tab Wd. | Each | |
1 Circuit Controlled with 1 Off (Normally Open) or 1 On (Normally Closed)—SPDT | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 5 | 120V AC | 7 | 380V AC | 1/3 hp @ 120 V AC | 0.6" | 1.8" | 1.16" | 0.187" | 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.
Solid state relays have no moving parts, so they require less maintenance and last longer, switch faster, and are quieter than mechanical relays.
| Number of Terminals | Input Voltage | Control Current, mA | Switching Current @ Voltage | Max. Switching Voltage | Ht. | Wd. | Dp. | Pin Lg. | Each | |
Solid State | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
1 Circuit Controlled with 1 Off (Normally Open)—SPST-NO | ||||||||||
| 4 | 24V DC | 7 | 2 A @ 240 V AC | 250V AC | 1.1" | 0.2" | 0.6" | 0.14" | 0000000 | 000000 |
| 4 | 24V DC | 7 | 6 A @ 24 V DC | 24V DC | 1.1" | 0.2" | 0.6" | 0.14" | 0000000 | 00000 |
| 4 | 60V DC | 7 | 6 A @ 24 V DC | 24V DC | 1.1" | 0.2" | 0.6" | 0.14" | 0000000 | 00000 |
DIN-Rail Mount Multifunction Timer Relays
Control multiple timing functions from your electrical cabinet—these timer relays mount to 35 mm DIN rail (also known as DIN 3 rail), which is the most commonly used size. UL Listed, C-UL Listed, or CE Marked, these relays meet American, Canadian, or European safety standards.
Timer relays with delayed, interval, switch-on, and repeat cycles have a broad range of applications. Use them to precisely control machines such as conveyors, lighting systems, and electric motors.
Use timer relays with asymmetrical repeat cycles when your repeat cycles have different on- and off-cycle durations.
Delayed Start (Delay-on-Make)—This function allows you to set how long it takes for the relay to turn on after input voltage is applied. For example, a drill starts pumping lubricant immediately, but it does not start rotating until the set time has elapsed.
Delayed Switch-Off (Delay-on-Break)—This function uses 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.
Delayed Switch-On with Delayed Switch-Off—This function uses a switch instead of input voltage. It allows you to set how long the relay takes to turn on after a switch is turned on, and how long it will stay on after the switch is turned off. For example, a furnace turns on, but the fan doesn’t start pushing air through the vents until it has been heated. When the furnace turns off, the fan keeps blowing to circulate all the hot air.
Delayed Pulse—This function uses input voltage to turn on the relay for a brief period after a preset time. For example, a light flashes a few seconds after a door closes.
Interval—This function uses input voltage to turn on the relay for a programmed amount of time. For example, when a part moving down a conveyor reaches a certain location, a cleaning spray comes on for a set time.
Interval Switch-Off—This function requires a switch to activate the relay, which stays off for the 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.
Switch-On (Single-Shot)—This function requires a switch to activate the relay, which stays on for the 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.
Repeat Cycle—This function starts with an on cycle and then alternates between an on cycle and off cycle of equal durations until input voltage is removed. A common example would be a flashing light.
Start-Off Repeat Cycle—This function starts with an off cycle and alternates between an on cycle and off cycle of equal durations until input voltage is removed. A common example would be a flashing light.
Switch Fixed On/Off—This function requires a switch to activate the timing function instead of the input voltage (which is applied the entire time). It keeps the relay on whenever the switch is closed; it will only turn off if the switch is open.
Timing Range | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Terminals | Input Voltage | Control Current, mA | Timer Relay Function | No. of | Overall | Switching Current @ 240V AC | Max. Switching Voltage | Ht. | Wd. | Dp. | Each | |
1 Circuit Controlled with 1 Off (Normally Open) or 1 On (Normally Closed)—SPDT | ||||||||||||
| 6 | 12V AC, 24V AC, 48V AC, 120V AC, 240V AC, 12V DC, 24V DC, 48V DC, 60V DC, 120V DC, 240V DC | 7 | Delayed Start (Delay-on-Make) Delayed Switch-Off (Delay-on-Break) Delayed Switch-On with Delayed Switch-Off Interval Switch-On (Single-Shot) Repeat Cycle | 6 | 0.1 sec.-24 hrs. | 16A | 250V AC | 3.5" | 0.7" | 2.4" | 000000 | 000000 |
2 Circuits Controlled with 2 Off (Normally Open) or 2 On (Normally Closed)—DPDT | ||||||||||||
| 8 | 12V AC, 24V AC, 48V AC, 120V AC, 240V AC, 12V DC, 24V DC, 48V DC, 60V DC, 120V DC, 240V DC | 7 | Delayed Start (Delay-on-Make) Delayed Switch-Off (Delay-on-Break) Delayed Switch-On with Delayed Switch-Off Delayed Pulse Interval Interval Switch-Off Switch-On (Single-Shot) Repeat Cycle Start-Off Repeat Cycle Switch Fixed On/Off | 8 | 0.1 sec.-10 days | 8A | 250V AC | 4.1" | 0.7" | 2.6" | 00000000 | 000000 |
Asymmetrical Repeat Cycle—This function switches the relay on and alternates between different durations of on and off for as long as input voltage is applied. For example, a sprinkler system sprays in short bursts followed by longer rest periods, on and off until input voltage is removed.
Switch-On Asymmetrical Repeat Cycle—This function switches the relay on and alternates between different durations of on and off for as long as input voltage is applied. It requires a switch to activate the timing function instead of the input voltage that’s being applied the entire time. You could use this function to turn on an electric motor for a short period and then turn it off for a longer rest period, repeating that pattern until the switch is turned off.
Timing Range | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Terminals | Input Voltage | Control Current, mA | Timer Relay Function | No. of | Overall | Switching Current @ 240V AC | Max. Switching Voltage | Ht. | Wd. | Dp. | Each | |
1 Circuit Controlled with 1 Off (Normally Open) or 1 On (Normally Closed)—SPDT | ||||||||||||
| 6 | 12V AC, 24V AC, 48V AC, 120V AC, 240V AC, 12V DC, 24V DC, 48V DC, 60V DC, 120V DC, 240V DC | 7 | Asymmetrical Repeat Cycle Switch-On Asymmetrical Repeat Cycle | 6 | 0.1 sec.-24 hrs. | 16A | 250V AC | 3.5" | 0.7" | 2.4" | 0000000 | 000000 |
Solid State DIN-Rail Mount Timer Relays
Mount these timer relays directly to 35 mm DIN rail (also known as DIN 3 rail) for fast installation. Unlike mechanical relays, they have no moving parts, so they require less maintenance and last longer, are quieter, and switch faster. After selecting a timing range, use the knob to adjust the trip time within the timing range.
Timing Range | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Terminals | Input Voltage | Control Current, mA | No. of | Overall | Switching Current @ 240V AC | Maximum Switching Voltage | Ht. | Wd. | Dp. | Each | |
Delayed Start (Delay-on-Make) | |||||||||||
1 Circuit Controlled with 1 Off (Normally Open)—SPST-NO | |||||||||||
| 6 | 24V AC, 48V AC, 120V AC, 240V AC, 24V DC, 48V DC, 60V DC, 120V DC, 240V DC | 7 | 7 | 0.1sec.-100 hrs. | 0.7A | 250V AC | 3 1/2" | 0.7" | 2.7" | 0000000 | 000000 |
Interval | |||||||||||
1 Circuit Controlled with 1 Off (Normally Open)—SPST-NO | |||||||||||
| 6 | 24V AC, 48V AC, 120V AC, 240V AC | 7 | 7 | 0.1sec.-100 hrs. | 0.7A | 250V AC | 3 1/2" | 0.7" | 2.7" | 0000000 | 00000 |