Review on Electromagnetic Power Relay With LED Indicator, DIN Rail, 14 Pin 4PDT, 5A Coil And Base - BNYZWOT HH54P DC 12V (2Pcs) by Thomas Taylor

In this world of solid-state electronics, sometimes it is helpful to have the audible electro-mechanical "clunk” of a relay to let you know things are working properly. I needed to increase the current capacity of a small switch and this fit the bill perfectly. These are exact replicas of the Potter-Brumfield or Guardian relays of the past but with a few nice additions. I like the red LED visible from the top of the relay that lights when the relay is energized. The socket has a DIN rail mount (a small section of rail is included) that needs a tool to clip or unclip it, which is good – it should not fall off. And there are holes for mechanical mounting if you do not want to use the rail. Screws are Philips head and there is good wire capacity, and there is a wiring diagram on the relay with numbering that corresponds to the socket screws.The relay energized and released just fine in testing, all conductors (4PDT) worked, and there was no discernable humming, a common problem with older relay coils. Remember, you can double up conductors if needed; I bridged mine to a 2PDT which means I theoretically had a 10A 250VAC relay switching capacity. In practice, I did not need to switch that much current, but doubling conductors if you do not need all four should extend the contact life.All in all, this is a good relay that I am hoping holds up well – only time will tell. But I only needed one and it is plug-in, so I have a spare! Recommended based on ease of connection and limited use so far.