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Siemens Relay LME 21 350C2 - Burner Controls
SiemensBurner Controls

Siemens Relay LME 21 350C2

Siemens LME 21 350C2 is a burner control relay for small to medium gas or gas/oil burners with intermittent operation. It provides flame supervision via ionization probe or QRA flame probe with AGQ3 device, serving…

SKU 3G-CBM-05843

Brand
Siemens
Item
Relay LME 21 350C2
Part Number
350C2
Category
Burner Controls
UNSPSC
40101833 — Boiler or heater igniter
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Technical Specifications

Siemens
Manufacturer Part Number
350C2
operation
Intermittent
application
Gas or gas/oil burners, single or two-stage, small to medium power
product type
Burner control relay
flame supervision
Ionization probe or QRA flame probe with AGQ3 device

Technical Documents

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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

Siemens LME 21 350C2 is a burner control relay for small to medium gas or gas/oil burners with intermittent operation. It provides flame supervision via ionization probe or QRA flame probe with AGQ3 device, serving single or two-stage combustion applications in industrial heating systems.

Frequently Asked Questions

Where can I buy the Siemens LME21 350C2 burner control relay in your region?

3G Electric supplies the Siemens LME21 350C2 for immediate order with delivery to your location. We handle all import logistics, customs clearance through customs, and USD invoicing. Lead time on request.

What is the lead time for the Siemens LME21 350C2?

The Siemens LME21 350C2 is available to order with lead time confirmed upon inquiry. 3G Electric manages shipping to your region, including all logistics coordination and regulatory compliance.

What flame supervision methods does the LME21 350C2 support?

The Siemens LME21 350C2 supports flame supervision via ionization probe or QRA flame probe with AGQ3 device. It handles single or two-stage combustion applications in small to medium gas or gas/oil burners with intermittent operation.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
This Siemens SIRIUS 3RT safety contactor is rated 150 A with 3 poles and a coil voltage of 23-26V AC/DC. It is designed for use in emergency-stop and safety circuits to safely disconnect machinery. No integrated surge suppression is included. Typical applications include industrial automation, conveyor systems, and process control
Siemens
This Siemens SIRIUS 3RT safety contactor is rated 150 A with 3 poles and a coil voltage of 23-26V AC/DC. It is designed for use in emergency-stop and safety circuits to safely disconnect machinery. No integrated surge suppression is included. Typical applications include industrial automation, conveyor systems, and process control
3-pole IEC magnetic contactor rated 16 A at 120V AC, part of the SIRIUS 3RT safety contactor series. Designed for safety-related switching and isolation in industrial machinery safety circuits, such as emergency stop and guard door monitoring. No integrated surge suppression
Siemens
3-pole IEC magnetic contactor rated 16 A at 120V AC, part of the SIRIUS 3RT safety contactor series. Designed for safety-related switching and isolation in industrial machinery safety circuits, such as emergency stop and guard door monitoring. No integrated surge suppression
This Siemens SIRIUS 3RT safety contactor is a 3-pole IEC magnetic contactor rated for 120V AC coil voltage and 96 A. It is designed for use in safety-related automation systems, such as emergency-stop circuits and machinery safety applications, to ensure reliable switching of motors and other loads. The contactor does not include integrated surge suppression
Siemens
This Siemens SIRIUS 3RT safety contactor is a 3-pole IEC magnetic contactor rated for 120V AC coil voltage and 96 A. It is designed for use in safety-related automation systems, such as emergency-stop circuits and machinery safety applications, to ensure reliable switching of motors and other loads. The contactor does not include integrated surge suppression

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