Schneider Electric Harmony Twist Release Emergency Stop Push Button, Illuminated, Surface Mount, 1 NO/2 NC XALK178W3B140G

Schneider Electric XALK178W3B140G is a Harmony Series twist release illuminated emergency stop push button designed for industrial safety and process control. Engineered to provide immediate and reliable emergency shutdown capability, it features a distinctive mushroom head actuator that allows operators to quickly engage the stop function under critical circumstances.

The push button employs a turn-to-release mechanism, which prevents accidental reset and ensures deliberate operator action when restarting machinery. Its illumination provides high visibility, making the unit easy to locate even in poorly lit environments, thereby enhancing workplace safety.

Constructed using durable polycarbonate materials, the push button station is impact resistant, dust resistant, water resistant, corrosion resistant, and vibration resistant. The product’s IP66 rating confirms its suitability for environments where exposure to dust and moisture presents operational challenges, such as manufacturing floors, electrical panels, outdoor installations, and assembly lines.

The unit’s contact configuration supports 1 normally open (NO) and 2 normally closed (NC) circuits, facilitating flexible control integration for a variety of industrial applications. Its surface mount design streamlines installation and is compatible with standard mounting surfaces in control stations and safety systems.

Electrical operation is supported up to 600V DC, with suitability for both 24V AC and DC supply systems, ensuring compatibility with diverse automation and process control architectures. The ambient working temperature range of -40°C to 70°C expands the push button’s operational adaptability across extreme environments.

Applications include emergency shutdown functions in industrial automation, manufacturing, electrical and mechanical assembly lines, and industrial safety panels where rapid response and reliable performance are paramount. The unit helps safeguard personnel and equipment against hazardous situations by providing a dependable emergency stopping interface.

Designed for compliance with environmental standards and Green Premium initiatives, the Harmony XALK178W3B140G embodies responsible engineering and quality assurance from Schneider Electric.

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