Schneider Electric ZB5AS944 Emergency Stop Pushbutton

The Schneider Electric ZB5AS944 emergency stop pushbutton provides immediate machine shutdown and personnel protection in industrial safety and emergency shutdown systems. As part of the Harmony XB5 family, it features a 22 mm operator diameter and a 40 mm red mushroom head with a plastic bezel, designed for panel mounting in control cabinets, machines, conveyors, and packaging lines. It uses a key-release reset and a trigger-action with mechanical latching, and carries IP66, IP67, and IP69K protection for demanding environments, with an operating temperature range of -40 °C to +70 °C, and conforms to IEC 60947-5-1 and IEC 60947-5-5 standards. This device is commonly installed in operator stations, production equipment, conveyor controls, and other industrial automation setups where immediate shutdown is required, and is suitable for repair, retrofit, and replacement by maintenance teams and system integrators. Common replacements include Schneider Electric ZB5AS844 and ZB5AS934, and Telemecanique ZB5AS944.