SiemensBurner Controls
Siemens Relay LGB 21 550A27
Siemens LGB 21 550A27 is a burner control safety relay for gas or gas/oil burners up to 350 kW, supporting 1 or 2 stage operation with ionization probe or blue flame sensor flame detection. Ideal for industrial…
SKU 3G-CBM-05830
Also listed as: REL 15135 · REL-15135
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore
Product Description
Siemens LGB 21 550A27 is a burner control safety relay for gas or gas/oil burners up to 350 kW, supporting 1 or 2 stage operation with ionization probe or blue flame sensor flame detection. Ideal for industrial heating and combustion safety applications.
Used in
Common applications for SiemensDistrict 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.
