Overview
The Siemens QPL25.010 is a compact, CE-approved gas pressure switch designed for monitoring gas or air pressures in industrial and commercial burner applications. It functions as a safety device that opens or changes over an electrical circuit when the pressure either falls below or exceeds a manually adjusted switching point. Built for reliability and precision, this automatic reset switch is typically integrated into gas trains to ensure the safe operation of gas-fired equipment by supervising minimum or maximum pressure levels.
Features
- Automatic reset functionality once pressure returns to the setpoint range
- Adjustable switching point via a setting knob located under a secure housing cover
- Suitable for use with gas families I, II, and III, as well as other neutral gaseous media
- Durable construction featuring a plastic housing with a die-cast aluminum base
- Compact design allowing for easy integration into complex gas train systems
- IP54 protection rating ensures resistance to dust and splashing water
- Integrated gas pressure test point for simplified field maintenance and verification
Specifications
- Model: QPL25.010
- Pressure Range: 2 to 10 mBar (0.2 to 1.0 kPa)
- Connection: 1/4 inch ISO threaded connection
- Switching Voltage: Max. AC 250 V to 280 V; DC 24 to 48 V
- Switching Current: Max. 6 A (at cos phi 1.0)
- Operating Pressure: Max. 60 kPa to 69 kPa continuous
- Temperature Range: -15 C to +60 C (Operating)
- Weight: Approximately 120 g to 143 g
- Mounting Position: Horizontal or vertical (not suspended with scale pointing down)
Applications
- Supervision of air or gas pressures in gas trains of gas-fired equipment
- Minimum or maximum pressure monitoring for industrial and commercial burners
- Integration by Original Equipment Manufacturers (OEMs) into burner control systems
- Use in HVAC and boiler systems to provide safety shut-off or signaling
- Monitoring of neutral gaseous media in heating and process applications


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