QPL15.150 Siemens Pressure Switch

Overview

The Siemens QPL15.150 is a compact pressure switch designed for monitoring gas or air pressures in industrial and commercial burner applications. It acts as a critical safety component, opening or changing over the electrical circuit when the pressure either falls below or exceeds the manually adjusted switching point. Engineered for reliability, this sensor is often integrated into gas trains and is frequently used in combination with Siemens SKP series actuators and VGD series gas valves to ensure safe operation.

Features

• Compact and durable design suitable for integration by original equipment manufacturers (OEMs)
• Automatic reset functionality for continuous monitoring without manual intervention
• Adjustable switching point via a manual setting knob located under a protective cover
• O-ring connection type for secure and leak-proof mounting
• High-quality silver contacts for reliable electrical switching
• Protection rating of IP54, providing resistance against dust and splashing water

Specifications

• Model: QPL15.150
• Pressure Range: 5 to 150 mbar (0.5 to 15 kPa)
• Switching Differential: 0.6 kPa
• Maximum Operating Pressure: 60 to 69 kPa (depending on specific variant)
• Electrical Rating: AC 250V (max 6A) or DC 24 to 48V (max 1A)
• Connection: O-ring seal
• Operating Temperature: -15 C to +60 C
• Weight: Approximately 120 g to 155 g

Applications

• Supervision of gas or air pressures in gas trains of gas-fired equipment such as burners
• Use as a minimum or maximum pressure monitor in safety shut-off systems
• Integration with Siemens LMV burner control systems and VGD gas valves
• Monitoring of neutral gaseous media including gas families 1, 2, and 3
• Suitable for industrial gas burner accessories and safety testing equipment