Dear Sir,

Thank you for the question. Please check and make sure you have enough current going throught he ring to activate the switch. Make sure you are not using a DC coil. From the specs you provided the unit should turn on without a snubber unit. You would need a snubber unit to turn it off. The recommended circuit is a resistor and capacitor in series across the wires of the device. A 0.01 microfarad capacitor rated 400 volts and a 100 ohm 1/8 watt resistor.

I have attached our catalog page for your review with the wiring specs. There is a wiring diagram on the bottom. Please check to make sure it is wired properly.

The switch will be used to sense current from woodworking tools. When I tested it, it seemed to turn on and off without any problems. The interposing relay coil is 120VAC with a 9ma power draw. Do I still need the snubber? Thanks

You need a snubber unit to turn it off. The recommended circuit is a resistor and capacitor in series across the wires of the device. A 0.01 microfarad capacitor rated 400 volts and a 100 ohm 1/8 watt resistor.

I have a similar situation I'm designing for. Won't the parallel path across the switch allow some current flow even when its off? Can the snubber go across the relay coil instead?

Hello Nathaniel,

Thank you for your interest.

There will be alittle current. However, the CR9350-ACA should turn off before 100mAAC and I would not imagine the current would be stuck above 100mAAC in a parallel path.

In fact, you can use a snubber either across the secondary leads of the ACA CR9350 or across the relay.