RS PRO Surface Mounted 250 mm Momentary Air Switch SPCO Model 319-708 United Kingdom

RS PRO 319-708 Surface Mounted 250 mm Momentary Air Switch is a single pole changeover air switch designed for use in hazardous environments requiring electrical isolation. The switch uses air pressure actuation to safely control electrical circuits where conventional electrical switches pose a risk due to sparks or moisture.

This surface mount switch features a 250 mm lead length with a 4 mm diameter spout for air tubing connection, compatible with 3 mm I/D tubing. It is rated at 16A for 250 V AC and 30 V DC operation, making it suitable for a wide range of industrial and laboratory equipment.

The device is UL approved and designed for applications such as battery charging rooms, garages, laboratories, or locations with explosive gases, vapours, or powders where electrical arcing must be avoided. The operating temperature range is from -10°C to +60°C, dependent on air tube length.

The air switch mechanism uses a bellows that compresses to send an air pulse to a control unit to switch equipment on or off safely. This method provides total electrical isolation enhancing operator safety and equipment protection in moist or hazardous environments.

The surface mount option allows easy installation and protection of electrical connections from the external environment, improving safety and durability in demanding conditions. Single pole changeover (SPCO) contact configuration for reliable switching.

Operating pressure approximately 1 PSI for actuation. Back entry air spout of 4 mm for secure tubing connection. Ideal for hazardous or wet environments where electrical isolation is needed. UL certification evidences compliance with safety standards.

Suitable for use in industrial, laboratory, HVAC, and hazardous area applications, this air switch ensures enhanced operational safety and durability. Explore more mechanical power transmission and electric actuator accessories in EnvMart’s Industrial Switch category.