Allen-Bradley 800T-H4 Momentary Selector Switch

The Allen-Bradley 800T-H4 Momentary Selector Switch is a 30 mm diameter operator from the 800T pilot-device family that provides momentary (spring-return) action, delivering a brief contact signal when actuated. It is designed for panel mounting and pairs with standard 800T contact blocks such as the 800T-XA, enabling straightforward wiring of normally open and normally closed configurations in control circuits. Part of Allen-Bradley’s 30 mm selector switch lineup, the 800T-H4 fits within the broader 800T/800H ecosystem, supporting common accessories and replacement parts for reliable, long-term panel integration. Typical applications include operator-initiated signals in machine control, such as start/jog/reset or select inputs in automation systems, where a momentary input is required to trigger a PLC or relay logic.