Siemens Photocell - Red Qrb1B-A050B70A

Replaces QRB1S LANDIS & GYR/STAEFA

Siemens Photocell – QRB1B-A050B70A (Red Casing)
Photoresistive Flame Sensor for Oil Burner Controls

The Siemens QRB1B-A050B70A is a high-sensitivity photocell designed to detect yellow-burning oil flames in intermittent operation systems. It is commonly used in conjunction with Siemens burner control boxes such as the LAL, LME7, LMO, and LOA series to ensure safe and reliable flame detection.

• High-sensitivity photoresistor in red casing
• 50mm body length with 50cm cable and 70mm stripped end
• Compatible with Siemens burner control units
• Detects visible light from oil burner flames
• Designed for frontal or lateral flame viewing
• Operating temperature: -20°C to +60°C
• Vibration-resistant mounting with secure clamp
• Protection rating: IP40
• Supplied without mounting plug

A critical safety component for oil burner systems, ensuring consistent and accurate flame monitoring in domestic or commercial heating applications.