SiemensServo Motors
Siemens SQN 71 664B20 servo motor
The Siemens SQN 71 664B20 is a servo motor actuator for HVAC and building automation control applications. It operates on AC 230V +10% -15% 50-60Hz or AC 115V +10% -15% 50-60Hz and mounts per ISO 7/1 standard…
SKU 3G-CBM-06579
Also listed as: SER 20046 · SER-20046
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore
Product Description
The Siemens SQN 71 664B20 is a servo motor actuator for HVAC and building automation control applications. It operates on AC 230V +10% -15% 50-60Hz or AC 115V +10% -15% 50-60Hz and mounts per ISO 7/1 standard, fitting retrofit and new-build valve control systems.
Used in
Common applications for SiemensDistrict 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.
