Siemens QRB1-B Photocell is an authentic Siemens industrial component (Model/MPN: QRB1-B-PHOTO) engineered for continuous factory operations and machinery maintenance in Kenya and across East Africa. Key verified ratings include Brand & Manufacturer: Siemens Building Technologies (Germany), Model Code: QRB1B (High Sensitivity), Sensor Technology: Photoresistive (CdS Cadmium Sulfide Cell). Standard plant applications include Siemens Controlled Low-Light Oil Burner Supervision, Commercial Steam Boilers & Water Heaters, Tea & Coffee Estate Auxiliary Boilers. Held at our STARNEX counter on Enterprise Road, Nairobi Industrial Area for immediate collection or same-day dispatch. When requesting a quotation, please specify required quantity, operating voltage/phase, pipe connection size, and delivery destination.
Siemens QRB1-B Photocell
Siemens QRB1-B Photocell is an authentic Siemens industrial component (Model/MPN: QRB1-B-PHOTO) engineered for continuous factory operations and machinery maintenance in Kenya and across East Africa. Key verified ratings include Brand & Manufacturer: Siemens Building Technologies (Germany), Model Code: QRB1B (High Sensitivity), Sensor Technology: Photoresistive (CdS Cadmium Sulfide Cell). Standard plant applications include Siemens Controlled Low-Light Oil Burner Supervision, Commercial Steam Boilers & Water Heaters, Tea & Coffee Estate Auxiliary Boilers. Held at our STARNEX counter on Enterprise Road, Nairobi Industrial Area for immediate collection or same-day dispatch. When requesting a quotation, please specify required quantity, operating voltage/phase, pipe connection size, and delivery destination.
Functional engineering application
The Siemens QRB1-B Photocell is a high-sensitivity photoresistive flame sensor manufactured by Siemens Building Technologies (Germany) for monitoring low-intensity yellow oil flames and compact combustion heads. Featuring higher optical gain than the standard QRB1-A, the QRB1-B is specifically calibrated for oil burners with restricted flame sightlines, low firing rates, or slight blue flame recirculation zones where standard photocells fail to detect sufficient light. Equipped with a 500mm heat-resistant cable and mounting clip, the QRB1-B plugs directly into Siemens LMO14, LMO24, and LME21 control boxes, providing fast and reliable flame supervision for commercial steam boilers and industrial heaters.
High-sensitivity photoresistive yellow flame detector photocell for Siemens LMO/LME control boxes on low-light oil burners.
Quotation & fulfilment
Parametric technical attributes
| Siemens QRB1-B-PHOTO | |
| IDENTIFICATION | |
| Component Type | Siemens QRB1-B Photocell |
| Manufacturer / Brand | Siemens |
| Part Number (MPN) | QRB1-B-PHOTO |
| Stock Keeping Unit (SKU) | STX-PCL-QRB1B-048 |
| TECHNICAL PARAMETERS | |
| Brand & Manufacturer | Siemens Building Technologies (Germany) |
| Model Code | QRB1B (High Sensitivity) |
| Sensor Technology | Photoresistive (CdS Cadmium Sulfide Cell) |
| Spectral Range | 400 nm - 700 nm (Visible Yellow Flame Spectrum) |
| Sensitivity Level | High Sensitivity (Type B) |
| Compatible Control Boxes | Siemens LMO14, LMO24, LMO44, LME11, LME21, LME22 |
| Cable Length | 500 mm Heat-Resistant Lead Wires |
| Protection Class | IP40 / NEMA 1 |
| Weight | 0.03 kg |
| Country of Manufacture | Germany |
| PERFORMANCE & RATINGS | |
| Operating Voltage | 230V AC / 50Hz (via Control Box) |
| Operating Temperature | -20°C to +60°C (-4°F to +140°F) |
| COMPLIANCE & LOGISTICS | |
| Stock Availability | In Stock - Enterprise Rd, Nairobi |
System fitment & verified replacements
Interchangeable models
Commonly installed on equipment from
Common questions on this part
Choose QRB1-B when your oil burner operates at low firing rates, has a restricted sightline, or has a faint flame where standard QRB1-A triggers nuisance lockouts.
Compatible with Siemens LMO14, LMO24, LMO44, LME11, LME21, and LME22 control boxes.
It features High Sensitivity (Type B) calibrated for faint visible yellow light.
Includes a 500 mm heat-resistant flexible connection cable.
Periodically inspect the glass lens for soot or oil film and wipe clean with a soft dry cloth.
Yes, if the burner burns oil and uses a Siemens LMO/LME control box.
Manufactured by Siemens Building Technologies in Germany.
Yes, STARNEX holds counter stock of Siemens QRB1-B photocells in Nairobi Industrial Area.
Rated for operation from -20°C to +60°C (-4°F to +140°F).
Yes, it includes a snap-in mounting clip for blast tube installation.
