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SiemensBurner Controls

Siemens Cell QRB3(1)

SKU 3G-CBM-05791

Also listed as: REL 10208 · REL-10208

Brand

Siemens

Item

Cell QRB3

Technical Specifications

Siemens

cable type

two-wire thermoplastic 

sensor type

photoresistor (flame sensor) 

qrb1a mounting

fixed with bracket, guidance groove and cam for vibration protection 

qrb1b mounting

soft plastic sleeve with sealing lips and retention lips, guidance spring 

mounting options

with/without soft plastic sleeve, with/without bracket/collar 

measurement method

probe current measurement 

flame type monitored

yellow oil flames 

maintenance cleaning

clean cloth only, no burner aerosol sprays 

iso 9001 certification

2000 (Cert. 00739) 

iso 14001 certification

1996 (Cert. 38233) 

cable routing requirement

separate from other cables, especially ignition cable 

compatible safety controls

LAL..., LOA..., LMO... 

signal quality requirement

minimum interference and signal loss 

qrb1 bracket hole spacing 1

21 mm 

qrb1 bracket hole spacing 2

36 mm 

response sensitivity options

normal or elevated 

electromagnetic compatibility directive

89/336/CEE 

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 QRB3(1) is a burner control unit featuring a photoresistor flame sensor for monitoring yellow oil flames via probe current measurement. It offers flexible mounting with or without soft plastic sleeve and bracket, two-wire thermoplastic cable connectivity, and response sensitivity options (normal or elevated). The unit is compatible with LAL..., LOA..., and LMO... safety controls, requires separate cable routing away from ignition lines, and should be cleaned with cloth only. 3G Electric sources and delivers this control system throughout Singapore and Southeast Asia, with full DDP logistics support.

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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