QPL15.050 Siemens Pressure Switch

Overview

The Siemens QPL15.050 is a compact pressure switch designed for monitoring gas or air pressures in industrial and commercial burner applications. It serves as a critical safety component by opening or changing over an electrical circuit when the pressure either falls below or exceeds a pre-adjusted switching point. This CE-approved device is engineered for integration by original equipment manufacturers (OEMs) into gas trains and is characterized by its reliable performance and durable construction.

Features

• Automatic reset functionality for seamless operation
• Adjustable switching point via a knob located under a securing cover
• O-ring connection type for secure integration into gas trains
• Durable plastic housing with a die-cast aluminum base
• High-quality sensing diaphragm for accurate pressure detection
• Suitable for use with gas families 1, 2, and 3, as well as hydrogen and neutral gaseous media
• IP54 protection rating, ensuring resilience against dust and splashing water

Specifications

• Model: QPL15.050
• Pressure Range: 0.5 to 5.0 kPa (5 to 50 mbar)
• Factory Setting: 0.5 kPa (5 mbar)
• Switching Differential: 0.3 kPa (3 mbar)
• Maximum Operating Pressure: 60 kPa (600 mbar)
• Switching Voltage: AC max. 250 V; DC 24 to 48 V
• Switching Current: AC max. 6 A (cos phi 1); DC max. 1 A
• Temperature Range: -15 C to +60 C (Operating)
• Connection Type: O-ring seal
• Weight: Approximately 155 g

Applications

• Supervision of air or gas pressures in gas trains of gas-fired equipment such as burners
• Use as a minimum or maximum pressure monitor in industrial heating systems
• Integration with Siemens VGD series gas valves
• Monitoring of neutral gaseous media in commercial combustion processes