Siemens Pressure Switches QPLx5
Product Description
Siemens QPLx5 Pressure Switches for Gas and Air Systems
Siemens QPLx5 pressure switches provide reliable pressure supervision for gas-fired burner installations. These devices monitor gas or air pressure and activate an electrical switching contact whenever the measured pressure crosses a preset threshold, helping support safe and consistent burner operation.
Each unit incorporates an adjustable pressure switching setting with automatic reset capability. A sturdy plastic enclosure combined with a die-cast aluminum base provides mechanical durability for industrial operating environments.
Key Features
- Monitors gas and air pressure in burner installations
- Supports both low-pressure and high-pressure supervision
- Adjustable pressure switching threshold
- Automatic reset after pressure conditions return to the specified range
- Available pressure ranges extending up to 50 kPa, depending on the model
- IP54-rated enclosure protection
- Supports horizontal and vertical installation
Applications
Siemens QPLx5 pressure switches are suitable for gas-fired burners, gas trains, industrial combustion control equipment, and gas pressure monitoring systems where dependable pressure supervision is required.
Specifications
Siemens QPLx5 Pressure Switches – Technical Data and Operating Specifications
| Technical Parameter | Product Specification |
|---|---|
| Manufacturer | Siemens |
| Model Series | QPLx5.xxxB |
| Device Category | Pressure Switch |
| Intended Use | Monitoring Gas and Air Pressure |
| Pressure Adjustment Range | 0.1 – 50 kPa (Varies by Model) |
| Maximum Permissible Operating Pressure | 72 kPa |
| Contact Switching Voltage | AC Max. 250 V / DC 24–48 V |
| Contact Switching Current | AC Max. 6 A (cos φ = 1) |
| DC Current Limit | 1 A |
| Switching Pressure Tolerance | ±15% |
| Ingress Protection | IP54 |
| Electrical Safety Classification | Class II |
| Ambient Operating Temperature | -15 to +60 °C |
| Permitted Storage Temperature | -20 to +80 °C |
| Permitted Installation Orientation | Horizontal or Vertical (Suspended Mounting Not Permitted) |
| Reset Mechanism | Automatic Reset |
| Expected Service Life | 50,000 Burner Startup Cycles or Approximately 10 Years |
| Applicable Standards | EN 1854, EN 60730-1 |
Product Specifications
Siemens QPLx5 Pressure Switches – Technical Data and Operating Specifications
| Technical Parameter | Product Specification |
|---|---|
| Manufacturer | Siemens |
| Model Series | QPLx5.xxxB |
| Device Category | Pressure Switch |
| Intended Use | Monitoring Gas and Air Pressure |
| Pressure Adjustment Range | 0.1 – 50 kPa (Varies by Model) |
| Maximum Permissible Operating Pressure | 72 kPa |
| Contact Switching Voltage | AC Max. 250 V / DC 24–48 V |
| Contact Switching Current | AC Max. 6 A (cos φ = 1) |
| DC Current Limit | 1 A |
| Switching Pressure Tolerance | ±15% |
| Ingress Protection | IP54 |
| Electrical Safety Classification | Class II |
| Ambient Operating Temperature | -15 to +60 °C |
| Permitted Storage Temperature | -20 to +80 °C |
| Permitted Installation Orientation | Horizontal or Vertical (Suspended Mounting Not Permitted) |
| Reset Mechanism | Automatic Reset |
| Expected Service Life | 50,000 Burner Startup Cycles or Approximately 10 Years |
| Applicable Standards | EN 1854, EN 60730-1 |
Company Information
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