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Siemens Servomotor SQN 31 402A2700 - Servo Motors
SiemensServo Motors

Siemens Servomotor SQN 31 402A2700

Siemens SQN 31 servomotor is a reversible synchronous motor for industrial valve control and actuator applications. Features 4.5-second 90° rotation time, operates on 220–240V or 100–110V AC at 50–60Hz, and includes…

SKU 3G-CBM-06570

Brand
Siemens
Item
Servomotor SQN 31 402A2700
Part Number
402A2700
Category
Servo Motors
UNSPSC
26101205 — Servo motor DC
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Siemens
Manufacturer Part Number
402A2700
type
Servomotor SQN3/SQN4
coupling
Manual disconnect lever with auto reset
frequency
50-60Hz ±6%
motor type
Reversible synchronous motor
supply voltage
220V~ -15% to 240V~ +10% / 100V~ -15% to 110V~ +10%
rotation time 90deg
4.5s
enclosure height series 1
110mm
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

Siemens SQN 31 servomotor is a reversible synchronous motor for industrial valve control and actuator applications. Features 4.5-second 90° rotation time, operates on 220–240V or 100–110V AC at 50–60Hz, and includes manual disconnect lever with auto reset. Ideal for HVAC and building automation systems.

Frequently Asked Questions

What is the Siemens SQN 31 402A2700 servomotor used for?

The Siemens SQN 31 402A2700 servomotor is a reversible synchronous motor designed for industrial valve control and actuator applications. It is commonly used in HVAC and building automation systems to regulate combustion air dampers or combined fuel/air controls in oil and gas burners of low to medium capacity.

What are the specifications of the Siemens SQN 31 402A2700 servomotor?

The Siemens SQN 31 402A2700 servomotor features a 4.5-second 90° rotation time, operates on 220–240V or 100–110V AC at 50–60Hz, and includes a manual disconnect lever with auto reset. It is a reversible synchronous motor with an enclosure height of 110mm and a torque rating up to 3 Nm.

Where to buy the Siemens SQN 31 402A2700 in Singapore?

3G Electric supplies the Siemens SQN 31 402A2700 servomotor to customers in Singapore. We handle logistics, customs clearance, and delivery to your facility. Contact our team for pricing and lead time on this Siemens-brand servomotor for HVAC and burner applications.

How to install the Siemens SQN 31 402A2700 servomotor?

Installation of the Siemens SQN 31 402A2700 servomotor should be performed by qualified specialists. Ensure the power supply is disconnected before wiring. Mount the unit securely, verify all safety functions, and test the rotation direction. Refer to the Siemens datasheet for detailed mounting and commissioning instructions.

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 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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