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Siemens Actuator SQN 31 221A2700 - Servo Motors

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Siemens Actuator SQN 31 221A2700

Siemens SQN 31 servo motor is a reversible synchronous actuator for air damper and gas regulation on oil and gas burners, delivering 1 Nm nominal torque with 4.5-second 90° rotation time. Operates at 220–240V~ or…

SKU 3G-CBM-06576

Also listed as: SER 20042 · SER-20042

Brand

Siemens

Item

Actuator SQN 31 221A2700

Technical Specifications

Siemens

model

SQN31 221A2700 

motor type

Reversible synchronous motor with blockage protection 

torque max

0.8 Nm 

application

Air damper and gas regulation on oil and gas burners 

torque nominal

1 Nm 

voltage 50 60hz

220V~ ±15% to 240V~ +10% or 100V~ ±15% to 110V~ +10% 

rotation time 90deg

4.5 seconds 

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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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