This system uses a reliable relay base w/ relay, which makes routine checks a bit easier.
Young Electronics Relay Socket SQ-14 15-Pins 300 V 5 Amps Missing 1 Screw
A nice touch is the Relay Bypass Switch Kit, letting you route power around a relay with confidence.
You will find that the 4 Pack makes it simple to replace relays across several devices.
You will find that this relay is a Phase Sequence Relay, keeping three phase systems running in the correct order.
A nice touch is the compact shape, which leaves room for other parts in crowded enclosures.
You will find that the Bradley brand is consistently well-marked on these relays, making identification quick and easy.
You will find that the G3P-210B behaves consistently in my lighting circuits, which really builds confidence.
You will find that the Features say N/A, making it easy to focus on the basics.
You will find that labeling on the CSJ-38-70010 stays leg after a few moves.
You will find that the Honeywell brand adds a nice touch of reliability to this general purpose relay.