Maxon 57339 VCS1/VOS2 Switch Assembly for Gas Safety Shut-Off Valves

The Maxon 57339 Switch Assembly provides critical valve position feedback for Maxon gas electro-mechanical safety shut-off valves. This assembly features one valve closed switch (VCS1) and two valve open switches (VOS2) configuration, enabling comprehensive monitoring of valve position for burner management systems.

Key Features:

• VCS1/VOS2 switch configuration for dual open position monitoring
• Provides positive valve position proof for safety interlocks
• Mounts directly to Maxon valve actuator assemblies
• Discrete contact outputs for integration with flame safeguards and PLCs
• Supports proof-of-closure (POC) and open-position safety interlocks
• Designed for code-compliant burner control applications

The VCS switch actuates at the end of the valve closing stroke, while the VOS switches actuate at the end of the opening stroke. This dual-output design enables redundant safety monitoring and start-permissive logic in critical combustion control systems. The switch assembly integrates with burner management systems, programmable controllers, and safety relays for reliable operation in industrial heating applications.