Siemens QRA Series
Siemens QRA Series includes UV flame detectors used for Siemens QRA detectors use ultraviolet radiation for flame supervision with compatible burner controls. The detector subfamily determines supported controllers and operating modes. Sensitivity, mounting and electrical connections must match the complete designation.. This guide compares common models, naming logic, selection checks, and related model pages.
What Is the QRA Series?
The Siemens QRA Series family is a focused product group within Siemens burner accessories. Engineers usually evaluate these models by application fit, electrical and mechanical compatibility, replacement risk, and the original burner control sequence.
Model Naming Logic
Use the manufacturer documentation for the exact subfamily and complete designation. Do not infer voltage, safety timing, torque, pressure or certification from a shared prefix.
Common Models in This Series
| Model | Type | Key Data | Page |
|---|---|---|---|
| QRA2 | Flame Detector | Flame Detectors | View specs |
| QRA2M | Flame Detector | Flame Detectors | View specs |
| QRA4.U | Flame Detector | Flame Detectors | View specs |
| QRA4M.U | Flame Detector | Flame Detectors | View specs |
| QRA10.C | Flame Detector | Flame Detectors | View specs |
| QRA10M.C | Flame Detector | Flame Detectors | View specs |
| QRA53.E17 | Flame Detector | AC 100-110V | View specs |
| QRA53.E27 | Flame Detector | AC 220-240V | View specs |
| QRA53.G17 | Flame Detector | AC 100-110V | View specs |
| QRA53.G27 | Flame Detector | AC 220-240V | View specs |
| QRA55.E17 | Flame Detector | AC 100-110V | View specs |
| QRA55.E27 | Flame Detector | AC 220-240V | View specs |
| QRA55.G17 | Flame Detector | AC 100-110V | View specs |
| QRA55.G27 | Flame Detector | AC 220-240V | View specs |
| QRA73.A17 | Flame Detector | AC 100-110V | View specs |
| QRA73.A27 | Flame Detector | AC 220-240V | View specs |
| QRA75.A17 | Flame Detector | AC 100-110V | View specs |
| QRA75.A27 | Flame Detector | AC 220-240V | View specs |
FAQ
What does the Siemens QRA Series collection cover?
Siemens QRA detectors use ultraviolet radiation for flame supervision with compatible burner controls. The detector subfamily determines supported controllers and operating modes. Sensitivity, mounting and electrical connections must match the complete designation.
Does a shared series name establish replacement compatibility?
No. Compare the complete designation, supported controller or interfaces, operating limits and document revision. A family document is not a verified replacement cross-reference.