Relays

A relay can be thought of as a toggle switch that is controlled by a program instead of by physical interaction. Relays are often used to automate lights, heaters, or fans based on environmental sensor data or a pre-programmed routine.

There are two major categories of relay: Mechanical relays, and Solid-state Relays (SSRs). Mechanical relays use an electromagnet and a spring to physically open or close the connection. The advantage of mechanical relays is that they are less expensive than SSRs, but they have a shorter lifespan because of the moving parts and other issues. Solid state relays use transistors to open or close the connection, and therefore have no moving parts and make no sound when switching.

1014_2B
PhidgetInterfaceKit 0/0/4
380.00
4 Relay Outputs for switching AC or DC power Rated...
1017_1B
PhidgetInterfaceKit 0/0/8
550.00
Control 8 DPDT mechanical relays, switching up to 250VAC/2amp or...
3962_0
AC Solid State Relay – 280V 20A Random Turn-on
120.00
This SSR switches up to 280VAC / 20A and connects...
3953_1
AC Solid State Relay – 280V 20A Zero-Cross Turn-on
120.00
This SSR switches up to 280VAC / 20A and connects...
REL2103_0
Solid State Relay Phidget
110.00
This solid state relay module can switch up to 30V...
REL2001_0
Relay Phidget
80.00
Use a VINT port with this relay to switch power...
REL2002_0
Signal Relay Phidget
90.00
Switch a small digital signal with this DPDT mechanical relay...
REL1100_0
4x Isolated Solid State Relay Phidget
180.00
Add four PWM-enabled solid state relay outputs to your hub...
REL1101_0
16x Isolated Solid State Relay Phidget
350.00
Add 16 PWM-enabled solid state relay outputs to your hub....
REL1000_0
4x Relay Phidget
230.00
Switch the power of up to four circuits at 210W...
3961_0
Large Heatsink for SSR
250.00
Use this heatsink to run one high current SSR without...
3957_0
DC Solid State Relay – 120V 25A
170.00
This SSR switches up to 120VDC / 25A and connects...
3958_0
DC Solid State Relay – 120V 75A
320.00
This SSR switches up to 120VDC / 75A and connects...
3959_0
AC Solid State Relay – 280V 25A
130.00
This SSR switches up to 280VAC / 25A and connects...
3951_0
DC Solid State Relay – 50V 80A
200.00
This SSR switches up to 50VDC/80amp and connects to a...
3952_0
DC Solid State Relay – 30V 100A
230.00
This SSR switches up to 30VDC/100amp and connects to a...
3955_0
Small Heatsink for SSR
60.00
Use this heatsink to run one SSR at full current...
3950_0
DC Solid State Relay – 30V 50A
160.00
This SSR switches up to 30VDC/50amp and connects to a...
3051_1B
Dual Relay Board
130.00
This board has 2 SPDT mechanical relays rated at 210W...
3052_1
SSR Relay Board 2.5A
110.00
Rated for 28VAC/2.5amp or 40VDC/2.5amp switching, this SSR is controlled...

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