Is this relay normally open or closed? And does it work on AC
991482
Yes, the coil is rated 12V AC. If you power it from a Lionel or other transformer you must be careful to not exceed the 12 rating for long periods, which is less than what can be put out by the transformers when turned all the way up. The relay has both normally open and normally closed contacts.
991483
A dpdt relay can be used on anything requiring a normally open and normally closed wiring system And depending what you are using it for 110v ac can be run thru pins a1 and a2
991484
I must first state that I have stocked up on several of these as they are advertised to work on AC voltage. My plan is to use them for signaling purposes on postwar Lionel trains which utilize AC track voltage for power. That said, I have not been able to test them at this time. I have one in front of me right now and the coil states: "AC12V," so I hope they work as advertised. In the de-energized state the moveable contact plate is contacting pins 1 and 2. If energized the moveable plate would contact pins 3 & 4. I apologize for not being able to provide any more information at this time. I must first state that I have stocked up on several of these as they are advertised to work on AC voltage. My plan is to use them for signaling purposes on postwar Lionel trains which utilize AC track voltage for power. That said, I have not been able to test them at this time. I have one in front of me right now and the coil states: "AC12V," so I hope they work as advertised. In the de-energized state the moveable contact plate is contacting pins 1 and 2. If energized the moveable plate would contact pins 3 & 4. I apologize for not being able to provide any more information at... » Read More I must first state that I have stocked up on several of these as they are advertised to work on AC voltage. My plan is to use them for signaling purposes on postwar Lionel trains which utilize AC track voltage for power. That said, I have not been able to test them at this time. I have one in front of me right now and the coil states: "AC12V," so I hope they work as advertised. In the de-energized state the moveable contact plate is contacting pins 1 and 2. If energized the moveable plate would contact pins 3 & 4. I apologize for not being able to provide any more information at this time. « Show Less
50320
As long as you have a way to reset it. It is a time delay on relay so when it gets power it does not turn on the load until the time selected delay is meet. You would need 2 timers and a relay with N.O. and N.C. contacts to make the circuit work.
618107
This just happened to my unit that is about 3 years old unit. Called APC and they are going to send another one. One thing you can try is unplugging everything, hold the unit about 6" above a solid surface and drop it. The shock can unstick the relay. I tried and it did work on mine.
812189
I would recheck the connections, and then the relay. You could swap the other relay if it's working properly.
658822
unfortunately this type of relay / contactor does not have normally closed poles...all terminals / poles are normally open..
604812
This is a normally "closed" switch, so when power is interrupted you must re-energize the relay with the remote.
1193010
Not sure...I am not an AC guy...I just connected the wires and turned it on...If if helps, one of our units is a gas pack. Heat and AC in one unit. Works fine..
717454
Pretty Simple. There is an input VCC and Ground and once that power applies it waits an x amount of time (based on the potentiometer) to actuate the relay. The relay has a COM (not connected to Ground) and a normally open and normally closed switch. Anything specific that you need help with?
1189585
It is a 12 Volt relay, it will operate on 12 V DC or 12 V AC and works well with AC or DC systems
1419462
no unless you use the ohm meter function to check continuity. That could tell you if it's open or not.
1728018
I have a couple of questions. First - have you talked with your electrician about this? Next, I don't understand your description of the problem. If the breaker trips when the thermostat kicks on, how does it get power to go up to 76? One issue with these thermostats is that they are designed to work on electric baseboard heat (resistive load). If the load is inductive (say a heater with a blower motor) they don't work. Finally, you may simply have a defective unit. Do the other 4 work properly?
452461
I have been using this to run the AC power from the wall, 110VAC. The Arduino pins have plenty of juice to toggle to relay. I have run mine for extended periods and have not had it fail yet. Only bought one. I plan on buying more soon.Application: Power relay from Sanguinololu 1.3a installed on MendelMax. Powering 110VAC-12V 20A power supply.
576106
No - it is operating as expected. The N/O and N/C contacts are just a switch from an electromechanical relay. You need to either ground or apply voltage to the common terminal - depends on how you use it in the circuit.
658823
The poles are closed only when power is applied to the coil. There is no N/C or N/O axillary contacts on this Contactor/relay.
312772
The relay is a basic low cost 12VDC relay. I used mine on my car horn in which it is damp continuously. If this is for a critical system buy a more expensive 'sealed" 12VDC relay. If its not on a critical system but under tank, or seat, just put a thin layer of epoxy on the cap to seal the unit. Install where the relay in the position with contacts facing downward. Use Dielectric grease on the electrical terminals before connecting them.
1270934
I.m not sure why you specifically mention relays on vehicle air conditioners, as if that would take a special meter. However, this little inexpensive meter does have the ability to measure volts, both AC and DC, ohms, amps, check capacitors, diodes, do a continuity check, and resistance checks. So, depending what you are wanting to check, I think it would serve the purpose just as well as a more expensive one, if you are worried about cost. I really don't know what else you would need for checking a relay, whether on a vehicle air conditioner or any other piece of equipment. Most of the time you either want to know !. is it getting power, 2.are the points open or closed, 3. is the power getting across the contacts, or 4. is the relay coil burned out or not. So yes, I think this would do what you want it to do, and for a good price. For home use, or a DIYer, this is a good little tool.
1390919
I put it in a Quelet 10000 watt heater. It allows you to control this unit with a regular low voltage thermostat. The heater I bought seems to be designed to go with this relay. It took me a little bit to figure out how this was wired, but if I recall it was very simple I did this almost 2 years ago