QPL25.010 Siemens Pressure Switch

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