Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
Siemens Actuator SQN 31 221A2700 - Servo Motors
SiemensServo Motors

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

Brand
Siemens
Item
Actuator SQN 31 221A2700
Part Number
221A2700
Category
Servo Motors
UNSPSC
26101205 — Servo motor DC
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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
221A2700
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
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

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 100–110V~ (50/60 Hz) with blockage protection for burner control applications.

Frequently Asked Questions

What is the Siemens SQN31 221A2700 actuator used for?

The Siemens SQN31 221A2700 is a reversible synchronous servo motor used for air damper and gas regulation on low- to medium-capacity oil and gas burners. It operates with a nominal torque of 1 Nm and a 90° rotation time of 4.5 seconds, making it suitable for burner control applications.

What are the specifications of the Siemens SQN31 221A2700?

The Siemens SQN31 221A2700 servo motor has a nominal torque of 1 Nm, a maximum torque of 0.8 Nm, and a 90° rotation time of 4.5 seconds. It operates at 220–240 V~ or 100–110 V~ (50/60 Hz) and features a reversible synchronous motor with blockage protection.

Where to buy the Siemens SQN31 221A2700 in Singapore?

You can source the Siemens SQN31 221A2700 servo motor through 3G Electric in Singapore. We handle logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this industrial burner actuator.

How to install the Siemens SQN31 221A2700 actuator?

Installation must be performed by qualified personnel only. Ensure the power supply is completely disconnected before working near terminals. Mount the actuator securely, verify correct electrical connections, and follow local regulations. Do not reuse the device if it has been dropped or impacted.

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
Not sure this is the right part? Photo-identify it

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
Actuator SQN 31 401A2700
Siemens
Actuator SQN 31 401A2700
Actuator SQN 30 401A2700
Siemens
Actuator SQN 30 401A2700
Actuator SQM 50 481A2
Siemens
Actuator SQM 50 481A2
Actuator SQM 10 16502
Siemens
Actuator SQM 10 16502
Actuator SQM 10 16532
Siemens
Actuator SQM 10 16532
Servomotor SQN 31 151A2700
Siemens
Servomotor SQN 31 151A2700

More from Siemens

View all Siemens parts
Spring AGA 22 FOR SKP25.0
Siemens
Spring AGA 22 FOR SKP25.0
Actuator SKP 25 703E2
Siemens
Actuator SKP 25 703E2
Servomotor SQM 40 265A21
Siemens
Servomotor SQM 40 265A21
Actuator SKP 75 001E2
Siemens
Actuator SKP 75 001E2
Servomotor SQM 40 265A20
Siemens
Servomotor SQM 40 265A20
SQN 30 251A2700 servo motor
Siemens
SQN 30 251A2700 servo motor
SQN 71 664B20 servo motor
Siemens
SQN 71 664B20 servo motor
Actuator SQN 31 121A2760
Siemens
Actuator SQN 31 121A2760

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first