SunLee 2 Pole 40 Amp contactor 120v Coil UL 2 Pole Lighting Load 50 AMP Contactor Equivalent to 42CF15AF for Condenser Compressor HVAC Contactor

I purchased the SUNLEE 2-Pole FLA 40 Amp, 24 VAC contactor as a replacement for a failed auxiliary heat contactor in my HVAC air handler. Installation was straightforward, and the part was an exact functional replacement. Once installed, the contactor pulled in immediately with a proper 24V call and restored full auxiliary/emergency heat operation. Build quality feels solid, terminals are well made, and the coil operates quietly and reliably. The unit handled the resistive heat load without any issues. Shipping was fast, packaging was good, and the part arrived as described. This saved me a service call and got my heat back quickly in very cold weather. I would absolutely buy this again and recommend it to anyone needing a reliable 2-pole 40A HVAC contactor. The picture below is the one I replaced, not the one being sold here.

I got this for my well as the old relay was sticking on. I had to drill new holes to mount it but it has been working for a day now and no problems.

I used this on my 1 1/2 hp pool pump in conjunction with a remote start/ stop timer switch that energizes the coil on the contactor. I mounted them in an outdoor enclosure near the pump. It works perfectly.

Works well.

It’s been working flawlessly for three weeks so far.

working as it should

This is very reliable!! It works as it should and has.simple diagram on the contactor.

This was an easy swap. The mounting plate lined up perfectly and everything is operating as expected. My use is for a hot tub controller so humidity may affect its longevity but after 2 months I am not seeing early rust and there isn't any vibration coming from the magnet. Those are the warning signs of a cheap or failing relay. I'll update the review if it fails within a year. My guess is this will outlast the rest of the controller.

Resulta que en la descripción decía que tenía bobina de 24 Voltios y llegó de 240 Voltios. Lo demás está bien.

Instalation facile

It works as intended, and would work fine in an application where coil hum doesn't matter. However, if you want to put this in your house, or another place where you want quiet, I would not use it as the coil buzz is very noticeable. If you need quiet, I would instead go for a rectifier + capacitor + solid-state-relay.