The Siemens QRB1B-C036B40A is a high-sensitivity oil-flame detector with a 105 mm red housing and a 36 cm cable. Its longer housing distinguishes it from the 50 mm QRB1B-A versions; the cable has 40 mm stripped ends and ferruled conductors.
Product Specification
- High sensitivity; red 105 mm detector housing.
- Fixed 36 cm cable with 40 mm stripped ends and ferruled conductors.
- Two-core stranded copper cable, 2 × 0.75 mm².
- Supplied without a soft mounting plug, flange or clamp.
- Frontal and 90-degree lateral flame viewing.
- IP40 protection.
- Safety class II; operating ambient temperature −20 to +60 °C.
- Maximum spectral sensitivity: approximately 600 nm.
Control Compatibility
Siemens lists QRB1 combinations with LAL, LME7, LMO, LMV and LOA control families for yellow oil-flame supervision. The selected burner control defines the detector sensitivity and permissible cable length.
Model Comparison
QRB1B-A070B70A: The A070 version has a 50 mm housing and 70 cm cable; this C036 version uses a 105 mm housing and 36 cm cable.
Compare sensitivity, housing and cable options in the QRB1 series selection guide.
