Intermatic CA3750 Dry Contact Dual Relay zwave edge driver
On popular request, this driver is for the Intermatic CA3750. This is a configurable 2 x single pole or 1 x dual pole relay which supports 120v, 208v, 240v, and 277v AC volts. It can be used to control high amperage devices like pool pumps, well pumps, irrigation (110v, 220v etc) or low voltage dry contact devices.
SCREENSHOTS
WHERE TO BUY
FEATURES
- Independent dual switch control
- Create custom automations for each relay
INSTRUCTIONS
Pairing
- The LED on the device should be flashing which indicates the device is not paired with a hub. If it’s not flashing then factory reset the device, exclude the device from the hub or leave it unplugged for a few hours
- Start the inclusion process on the SmartThings hub and then press the button on the device to turn on or turn off the relay, this will start the pairing process on the device
Exclusion
- The LED on the device should not be flashing, which indicates that the device is currently paired with the hub.
- Start the zwave exclusion process on the hub and then press the button on the device to turn on or off the relay, this initiates the exclusion on the device
Factory Reset
- Leave the device unplugged for a few hours and it will automatically reset the device and it will be ready to start pairing (the LED will be flashing)
Switching the input voltage selector
- NOTE: This is the INPUT voltage selector for the device (contacts 1 & 2). This NOT the voltage for the relay 1 (contact 3 & 4) and relay 2 (contact 5 and 6). If you’re unsure about wiring contact a qualified electrician.
- Take out the device from the box and turn it over, pull out the fuse jumper and put it into the holes for the appropriate input AC voltage
Configuring Relay as a Single or Dual Pole
- The device can be used in 2 configurations
- 2 x Single pole (SPST) where Relay 1 (contacts 3 & 4) and Relay 2 (contacts 5 & 6) can be independently controlled
- 1 x Dual pole (DPST) where Relay 1 and Relay 2 are operated simultaneously to act as a single relay to allow you to double the maximum operating amps
- Use the switch on the reverse of the board to switch between SPST and DPST operating modes
Manual
- Click on the image to expand the manual
Wiring
- Refer to this page for wiring configurations
- See this video for more information about wiring and setup
https://www.youtube.com/watch?v=BaA4R2U2K4w
NOTES
- If the device is left unplugged/disconnected from the mains for too long, it automatically resets and excludes itself from the hub. You will need to pair it again and delete the old (offline) device from SmartThings.
- Load Rating
Contact Ratings: 120-277 VAC, 40A Resistive Single Phase
120-277 VAC, 20A Ballast load (Inductive) Single phase
125 VAC, 15 A Tungsten
250 VAC, 5 A Tungsten
1HP@120VAC
2HP @ 240VAC
DC or direct current volt ratings are not shown in manual
3Hp at 240Volts/ 1-1/2 Hp at 120V
Volts x amps = watts. 240V x 24 amps = 5760 watts. Use 10 gauge wire
Range 50’ indoor, 100’ outdoor.