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SiemensBurner Controls

Siemens Relay LGK 16 333A27

SKU 3G-CBM-05837

Also listed as: REL 15157 · REL-15157

Brand

Siemens

Item

Relay LGK 16 333A27

Technical Specifications

Siemens

burner type

Medium and large power burners with multiple stages or modulating in permanent service 

certification iso

ISO 9001 

air damper control

Controlled air damper command 

control pin number

4 166 8024 0 

air pressure control

Yes

compatible base types

LAL2, LFL1 (except LFL1.148) 

flame monitoring type

Self-monitoring flame signal amplifier 

application burner duty

Permanent service burners, intermittent service burners capable of continuous operation exceeding 24 h under high heating load, steam boiler technical rules domain burners (TRD 411 and 412) 

unlock button max force

≤ 10 N 

control pin location lal base

Between terminals 10/11 of LAL base 

control pin location lfl base

Between terminals 4/5 of LFL base 

flame detector compatible lgk16

QRA53/QRA55 flame probe, ionization probe, or QRA53/QRA55 flame probe and ionization probe together 

flame detector compatible lok16

Selenium photoelectric cell probe RAR 

flame restart repeat capability

Yes, via shunt B removal 

unlock button max activation time

≤ 10 s 

View Full Spec Sheet

Technical Documents

(3)

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Siemens Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Siemens Relay LGK 16 333A27 is a burner control module designed for medium and large power burners with multiple stages or modulating operation in permanent service. It provides controlled air damper command, air pressure control, and self-monitoring flame signal amplification with compatible flame detectors including QRA53/QRA55 flame probes and ionization probes. The unit is compatible with LAL2 and LFL1 (except LFL1.148) base types, meets ISO 9001 certification, and supports permanent service burners and intermittent service burners capable of continuous operation exceeding 24 h under high heating load per TRD 411 and 412 steam boiler technical rules. 3G Electric sources and delivers complete burner control solutions 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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