Potter & Brumfield is on the side, and the part number matches common industrial references online.
Potter & Brumfield KUP-14A55-240 240V Relay
This Potter & Brumfield relay looks clean, with tidy contacts and a coil that seems well sealed.
What Potter & Brumfield unit is the clear polarity marks on the coil.
This Potter & Brumfield piece shows consistent molding and a tidy coil dress that looks professional.