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Siemens Actuator SQM 50 481A2 - Servo Motors
SiemensServo Motors

Siemens Actuator SQM 50 481A2

Siemens SQM 50 481A2 is a reversible synchronous servo motor with die-cast aluminium housing for industrial automation control applications. It delivers 40 Nm maximum torque with a rotation time of 10–90 seconds…

SKU 3G-CBM-06547

Brand
Siemens
Item
Actuator SQM 50 481A2
Part Number
481A2
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
481A2
type
SQM50
housing
Die-cast aluminium
motor type
Reversible synchronous
max torque nm
40
rotation time s
10-90

Technical Documents

(1)
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

Siemens SQM 50 481A2 is a reversible synchronous servo motor with die-cast aluminium housing for industrial automation control applications. It delivers 40 Nm maximum torque with a rotation time of 10–90 seconds, suited for HVAC damper actuation and similar positioning tasks.

Frequently Asked Questions

What is the Siemens SQM 50 481A2 actuator used for?

The Siemens SQM 50 481A2 is a reversible synchronous servo motor used for positioning air or gas dampers in industrial burners and HVAC systems. It is designed for medium to large oil or gas burners, regulating combustion air, fuel gas, and oil flow rates based on load.

What are the specifications of the Siemens SQM 50 481A2?

The Siemens SQM 50 481A2 delivers 40 Nm maximum torque with a rotation time of 10 to 90 seconds. It features a die-cast aluminium housing and a reversible synchronous motor type. It supports one or two shaft outputs and can accept electronic modules for progressive control signals.

Where to buy Siemens SQM 50 481A2 in Singapore?

You can source the Siemens SQM 50 481A2 through 3G Electric in Singapore. We supply industrial automation components and handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this servo motor.

How to install the Siemens SQM 50 481A2 actuator?

Installation must be performed by qualified personnel only. Disconnect all power before working near terminals. Ensure local regulations are followed. The actuator can be mounted with the drive shaft and cam shaft disengaged separately. Use the plastic cover for safe cam adjustment under mains voltage.

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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