Siemens Photocell Qrb1-150.7(2) Qrb1A-A150B70A

QRB1A-A150B70A LANDIS & GYR LOA24 CONTROL BOX

Siemens photocell QRB1-150.7(2) / QRB1A-A150B70A for flame detection in oil burner control systems. Designed for use with Siemens burner controls and flame safeguard units, this UV-resistant infrared flame sensor provides reliable burner flame supervision in residential and commercial oil-fired systems.

Features & Technical Specifications:

• Part Numbers: QRB1-150.7(2), QRB1A-A150B70A

• Sensor Type: Infrared flame detection (for yellow flame monitoring)

• Cable Length: 1500mm (1.5m) heat-resistant cable

• Connector Type: Flat 2-pin plug (standard QRB series format)

• Operating Range: Designed for use with Siemens burner control boxes (e.g., LOA, LAL series)

• Temperature Rating: Cable and head rated for burner enclosure conditions

• Applications:

  • Oil-fired boilers and burners

  • Flame supervision in pressure-jet burners

  • Compatible with many Riello, Bentone, and Ecoflam burners using Siemens controls

• Mounting: Standardised QRB clip-in fitting or bracket-mounted in flame tube

Function:
Detects presence of a stable oil flame by sensing infrared light emissions. Signals burner control box to continue operation or trigger lockout in case of flame failure.