Allen-Bradley Z-3374 Overload Relay Contact Block

Allen-Bradley Z-3374 is a contact block accessory designed to accompany timing relays in legacy overload-relay configurations. This block mounts with compatible timing relays and provides an additional contact path to support control logic within an industrial control panel. The Z-3374 is specified for 120-600 VAC operation in timing-relay applications, indicating its suitability for standard line voltages and higher-voltage control circuits. In retailer listings, it is described as the overload-relay contact block Z-3374 and is associated with Allen-Bradley 809-series overload-relay assemblies, underscoring its role as a compatible add-on rather than a standalone relay. By adding this contact block, technicians can extend the auxiliary contact capability of a timing relay, enabling additional signaling or control logic pathways in a panel. As with many legacy Allen-Bradley accessories, the Z-3374 is designed to fit specific mounting footprints and electrical interfaces for easy retrofit in existing panels.