Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
Siemens Relay LGK 16 333A27 - Burner Controls
SiemensBurner Controls

Siemens Relay LGK 16 333A27

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…

SKU 3G-CBM-05837

Brand
Siemens
Item
Relay LGK 16 333A27
Part Number
333A27
Category
Burner Controls
UNSPSC
40101833 — Boiler or heater igniter
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Siemens
Manufacturer Part Number
333A27
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
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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.

Frequently Asked Questions

What is the Siemens Relay LGK 16 333A27 used for?

The Siemens Relay LGK 16 333A27 is a burner control module 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. It is suitable for gas or oil installations requiring self-monitoring flame supervision, including steam boiler applications under TRD 411 and 412.

What are the specifications of the Siemens Relay LGK 16 333A27?

The Siemens Relay LGK 16 333A27 supports medium and large power burners in permanent or intermittent service exceeding 24 h under high heating load. It features self-monitoring flame signal amplification, controlled air damper command, and air pressure control. It is compatible with QRA53/QRA55 flame probes and ionization probes, and fits LAL2 and LFL1 base types (except LFL1.148). It is ISO 9001 certified.

Where to buy the Siemens Relay LGK 16 333A27 in Singapore?

3G Electric supplies the Siemens Relay LGK 16 333A27 to Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact our team for pricing and lead time on this burner control module. We provide technical support for integration with compatible flame detectors and base types.

How to select the correct base type for the Siemens LGK 16 333A27?

To select the correct base type for the Siemens LGK 16 333A27, ensure compatibility with LAL2 or LFL1 bases, except LFL1.148. The unit is designed for retrofit into existing installations using these base types. Verify that good probe currents were measured on the previous LFL1-controlled equipment and that QRA53/QRA55 or ionization flame detectors are available.

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
Not sure this is the right part? Photo-identify it

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.

You might also need

Gas Trains & Valves Ignition Transformers Burner Controls Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
Relay LGK 16 635A27
Siemens
Relay LGK 16 635A27
Relay LGK 16 622A27
Siemens
Relay LGK 16 622A27
Relay LGK 16 622A17
Siemens
Relay LGK 16 622A17
Relay LGB 22 230B27
Siemens
Relay LGB 22 230B27
Relay LME 22 331C2
Siemens
Relay LME 22 331C2
Relay LME 22 131C2
Siemens
Relay LME 22 131C2

More from Siemens

View all Siemens parts
Cell QRB1A-A068B70B
Siemens
Cell QRB1A-A068B70B
Adapter KF8896
Siemens
Adapter KF8896
Relay LAL 2.14
Siemens
Relay LAL 2.14
Cell QRB1A-A150B70A
Siemens
Cell QRB1A-A150B70A
Relay LFL 1.335 110V
Siemens
Relay LFL 1.335 110V
Relay LFL 1.333
Siemens
Relay LFL 1.333
Siemens
Siemens
Flange for QRB1 (A)
Relay LFL 1.322
Siemens
Relay LFL 1.322

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first