General purpose relays have low coil consumption to minimize transformer and power supply requirements. Maintenance can be performed without disturbing wires. Sockets and relays are keyed to ensure proper assembly. Units come in octal base, square base, flange-mounted and miniature square base configurations, with pin and blade terminals (5-25 A) from 1 to 4 poles. Hermetically sealed relays suitable for Class 1, Div. 2 Group A, B, C and D hazardous locations are offered in the octal base and miniature square base units.