Siemens QRB3 Flame Detector
Technical specs, application notes, replacement checks, and related model references.
Product Overview
The Siemens QRB3 is a photoresistive flame detector specifically engineered for the supervision of yellow-burning oil flames. It employs a highly sensitive photoresistor that changes its electrical resistance based on the visible light intensity generated by the oil flame, providing accurate flame verification. Widely implemented in light oil and heavy oil burners used in residential, commercial, and industrial heating systems, the QRB3 ensures safe operation by instantly detecting flame failure. The QRB series is valued for its compact design, straightforward installation, and reliable performance in dedicated oil combustion applications.
Key Features
- Component Type: Flame Detectors
- Operating Voltage: AC 220V / 230V (Standard)
- Protection Class: IP40 / IP54
- Original Siemens quality and reliability
- Compliant with relevant CE / DIN EN standards
Technical Specifications
Verification RequiredVerification Status
Core model identity has been collected. Electrical parameters, terminal layout, replacement compatibility, and safety timing should be verified against official manufacturer documentation before field use.
Selection Notes & Data Verification
The QRB3 page is structured for engineering comparison: confirm the product type, firing range, fuel type, operating mode, electrical supply, and safety approvals against the manufacturer datasheet before specifying the burner or component.
Burner.wiki normalizes product data for discovery and comparison, but final selection should account for combustion chamber backpressure, local emission limits, control sequence requirements, and site commissioning conditions.
Typical Applications
Related Models
Related Knowledge
FAQ
What is Siemens QRB3 used for?
Siemens QRB3 is referenced as a flame detector for industrial combustion systems. Verify the exact application against the burner documentation, control cabinet wiring, and manufacturer datasheet.
Can QRB3 replace another model?
Replacement depends on voltage, safety timing, wiring terminals, flame supervision method, mechanical fit, and local combustion safety requirements.
What should be checked before installing QRB3?
Check supply voltage, burner sequence, fuel type, pressure or capacity range, detector compatibility, safety loop configuration, and the equipment nameplate before commissioning.
Documentation Note
Technical documentation should be verified against the manufacturer datasheet, burner cabinet wiring diagram, and equipment nameplate before installation or replacement.
- Check supply voltage and frequency.
- Confirm terminal layout and safety interlocks.
- Verify flame detector or actuator compatibility.
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