06-23-2021, 12:38 AM
1. we use JQC-3FF 10A 277VAC relay model. it's common model, you can easy to find many different brand's relay product to replace. it's not difficult to replace and weld the relay. I think we can make a video upload to our YouTube channel how to replace relay from PCB board later.
2. Yes, you can chose, just package is same.
3. Yes, use extend relay will let KC868 controller's relay life extend. contactor according to current, it have sound when ON/OFF, SSR no sound, but use for inductive load, because use semiconductor to relay power output. AC contactor is safety for large current load. But SSR working no sound, no noise.
4. RC snubber is use for AC contactor to kill spark. if use SSR, not need to use RC snubber,because it's DC and low current.
2. Yes, you can chose, just package is same.
3. Yes, use extend relay will let KC868 controller's relay life extend. contactor according to current, it have sound when ON/OFF, SSR no sound, but use for inductive load, because use semiconductor to relay power output. AC contactor is safety for large current load. But SSR working no sound, no noise.
4. RC snubber is use for AC contactor to kill spark. if use SSR, not need to use RC snubber,because it's DC and low current.