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SiemensServo Motors

Siemens Actuator SQN 31 351A2700

Siemens SQN 31 reversible synchronous motor for air damper and fuel/gas valve control applications. Delivers 1 Nm nominal torque with 0.8 Nm holding torque, completing 90° rotation in 4.5 seconds. Operates on 220V or…

SKU 3G-CBM-06577

Also listed as: SER 20044 · SER-20044

Brand

Siemens

Item

Actuator SQN 31 351A2700

Technical Specifications

Siemens

motor type

reversible synchronous motor 

application

air damper and fuel/gas valve control on low to medium power oil and gas burners 

voltage 50 60hz

220V ±15% / 240V +10% or 100V ±15% / 110V +10% 

holding torque nm

0.8

nominal torque nm

1

rotation time 90deg

4.5 s 

View Full Spec Sheet

Technical Documents

(2)

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Siemens Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

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 servo motors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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