ABB B7D-30-01-01 DIN Rail Mounted Safety Relay

ABB B7D-30-01-01 is a compact three-pole mini contactor with a 24 V DC coil designed for DIN-rail mounting in control panels. It provides three normally open main contacts and includes one auxiliary contact, with screw-terminal wiring for secure, tidy connections. A diode across the coil provides transient suppression to protect driving electronics during switching and to reduce voltage spikes on energize/de-energize cycles. This device is intended to switch small- to medium-power loads in automation applications such as conveyors, machine tools, and other panel-control circuits where a DC-coil actuator is preferred. The B7D-30-01-01 is compatible with standard DIN-rail installations alongside other ABB low-voltage components, offering a space-efficient solution for compact automation enclosures. In ABB catalogs this variant is identified as GJL1317001R0011, which corresponds to the same 24 V DC coil with diode configuration and three main contacts plus an auxiliary contact. The diode-equipped coil design supports safer operation in circuits with inductive loads and rapid switching, helping protect upstream controllers and improve overall system reliability.