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SiemensBurner Controls

Siemens Cell QRB1B-D042B20B

SKU 3G-CBM-05786

Also listed as: REL 10203 · REL-10203

Brand

Siemens

Item

Cell QRB1B-D042B20B

Technical Specifications

Siemens

cable type

Two-wire thermoplastic 

application

Oil burner flame monitoring for small power burners 

sensor type

Photoresistor (flame sensor) 

target audience

OEM integration 

mounting options

Bracket mounting (with or without soft plastic sleeve) 

iso certifications

ISO 9001:2000, ISO 14001:1996 

reference document

CC1N7714fr, dated 08.2003 

compliance standards

89/336/CEE (EMC Directive) 

maintenance cleaning

Clean cloth only (do not use burner sprays) 

response sensitivity

Normal or elevated 

certification numbers

00739, 38233 

compatible control units

LAL..., LOA..., LMO... safety control units 

flame detection spectrum

Visible spectrum (yellow oil flame) 

cable routing requirement

Separate from other cables, especially ignition cables 

signal measurement method

Probe current measurement (microamperes) 

bracket hole spacing options

21 mm, 36 mm 

maintenance personnel requirement

Qualified personnel only 

installation personnel requirement

Qualified personnel only 

commissioning personnel requirement

Qualified personnel only 

protection against mechanical damage

Not to be returned to service after drop or impact 

View Full Spec Sheet

Technical Documents

(1)

Technical Document 1

PDF Document

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Siemens Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Siemens Cell QRB1B-D042B20B is a photoresistor-based burner control for oil burner flame monitoring in small power burners, supplied with two-wire thermoplastic cable and bracket mounting (21 mm or 36 mm hole spacing options). Designed for OEM integration with LAL..., LOA..., and LMO... safety control units, it detects visible spectrum yellow oil flame and measures probe current in microamperes, with selectable normal or elevated response sensitivity. The unit complies with ISO 9001:2000, ISO 14001:1996, and 89/336/CEE (EMC Directive), and requires qualified personnel for installation, commissioning, and maintenance; cable must route separately from ignition cables and cleaning is by cloth only. 3G Electric sources and stocks this product for delivery across Singapore and Southeast Asia.

Used in

Common applications for Siemens

District cooling plants — LME73 + RWF55 for condenser-water modulation

Inflight catering and food-processing steam boilers — LMG22 with SQN90 air-fuel cross-damper

Hospital steam-plant redundancy — LME41 with QRA2 UV flame detection for dual-fuel boilers

Semiconductor fab process heat — LME23 and SKP55 gas valves on hot-oil heater skids

Container-terminal reefer-deck heating — LMG22 retrofit onto legacy burner racks

Siemens Products

3G Electric supplies Siemens burner controls. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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