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Siemens Relay LOK 16 250A27 - Burner Controls
SiemensBurner Controls

Siemens Relay LOK 16 250A27

Siemens LOK 16 250A27 is a burner control safety relay for universal heating applications, featuring integrated air pressure control and 22 s prevenilation time. It accommodates flame probe QRA53/QRA55 or ionization…

SKU 3G-CBM-05774

Brand
Siemens
Item
Relay LOK 16 250A27
Part Number
250A27
Category
Burner Controls
UNSPSC
40101833 — Boiler or heater igniter
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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
250A27
type
LOK16.250A27
application
burner control safety relay
preferred use
universal application
flame monitoring
flame probe QRA53/QRA55 or ionization probe
air damper control
controlled
air pressure control
yes
preventilation time t1
22 s
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

Siemens LOK 16 250A27 is a burner control safety relay for universal heating applications, featuring integrated air pressure control and 22 s prevenilation time. It accommodates flame probe QRA53/QRA55 or ionization monitoring, fitting standard industrial combustion safety systems.

Frequently Asked Questions

What is the Siemens LOK 16 250A27 used for?

The Siemens LOK 16 250A27 is a burner control safety relay for universal heating applications. It is used in medium to large industrial burners with multi-stage or modulating operation, providing self-monitoring flame surveillance for gas or oil installations requiring continuous or intermittent service.

What are the specifications of the Siemens LOK 16 250A27?

The Siemens LOK 16 250A27 (type LOK16.250A27) is a burner control safety relay with a 22 s prevenilation time. It features integrated air pressure control and controlled air damper operation. Flame monitoring supports QRA53/QRA55 flame probes or ionization probes for universal application.

Where to buy the Siemens LOK 16 250A27 in Singapore?

You can source the Siemens LOK 16 250A27 through 3G Electric in Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this burner control safety relay.

How to install the Siemens LOK 16 250A27?

Installation of the Siemens LOK 16 250A27 should follow the manufacturer's wiring diagram and safety guidelines. Ensure proper flame probe (QRA53/QRA55 or ionization) connection and air pressure control setup. Always disconnect power before installation and comply with local combustion safety regulations.

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
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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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