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Siemens Relay LDU 11 523A27 - Burner Controls
SiemensBurner Controls

Siemens Relay LDU 11 523A27

Siemens LDU 11 523A27 is a burner control relay for industrial combustion systems, rated 220V to 240V AC with 2.5 VA~ operating power consumption. Features internal fuse T6.3H250V and supports any mounting position…

SKU 3G-CBM-05833

Brand
Siemens
Item
Relay LDU 11 523A27
Part Number
523A27
Category
Burner Controls
UNSPSC
40101833 — Boiler or heater igniter
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Technical Specifications

Siemens
Manufacturer Part Number
523A27
model
LDU11.523A27
fuse internal
T6.3H250V (DIN EN 60127)
supply voltage
220V~ -15% to 240V~ +10%
fuse external max
10A slow
mounting position
any
power consumption test
3.5 VA~
power consumption operation
2.5 VA~
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

Siemens LDU 11 523A27 is a burner control relay for industrial combustion systems, rated 220V to 240V AC with 2.5 VA~ operating power consumption. Features internal fuse T6.3H250V and supports any mounting position, fitting OEM and retrofit applications.

Frequently Asked Questions

Where can I buy the Siemens LDU 11 523A27 relay in your region?

3G Electric stocks and sources the Siemens LDU 11 523A27 burner control relay. We deliver to your location with full logistics and customs customs handling. Contact us for pricing and lead time.

What is the lead time for the Siemens LDU 11 523A27?

Lead time varies by warehouse location and stock status. Contact 3G Electric for specific availability and delivery schedule to your location. We handle all import documentation and customs clearance.

What are the voltage and power specifications of the LDU 11 523A27?

The Siemens LDU 11 523A27 operates at 220V~−15% to 240V~+10% AC supply, with 2.5 VA~ power consumption during normal operation and 3.5 VA~ during test. Internal fuse is T6.3H250V per DIN EN 60127.

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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