The Siemens QRB1A-A050B70A is the 50 cm cable configuration of the normal-sensitivity QRB1A detector. The black 50 mm housing is designed for flange-and-clamp mounting, with those fittings supplied separately.
Product Specification
- Normal sensitivity; black 50 mm detector housing.
- Fixed 50 cm cable with 70 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
QRB1A-A070B70A: The 70 cm version provides an additional 20 cm of cable with the same sensitivity and housing.
Compare sensitivity, housing and cable options in the QRB1 series selection guide.
