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

3G Electric
Image not available
SiemensLab & Fume Hood Electric Actuators

Siemens 179 in-lb Electric Valve Actuator, 24V AC, Floating Point, 90° Stroke

<p>The Siemens 179 in-lb Electric Valve Actuator (MPN: 546-00437B) is a robust 24V AC unit designed for precise floating point control in lab and fume hood applications. With a 90° stroke and a rapid 2.3-second cycle…

SKU 3G-OTH-364803

Also listed as: 54600437B · 546 00437B

Brand
Siemens
Item
179 in-lb Electric Valve Actuator, 24V AC, Floating Point, 90° Stroke
Part Number
546-00437B
Category
Lab & Fume Hood Electric Actuators
Available to Order
Also known as:546-00437BSiemens
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
546-00437B
Type
179 in-lb Torque
Voltage
24V AC
Cycle Time
2.3 sec
Product Type
Electric Valve Actuator
Return Action
Manual Return
Stroke Degree
90°
Control Signal
Floating Point

Technical Documents

No technical documents available for this product.
Request documentation
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

<p>The Siemens 179 in-lb Electric Valve Actuator (MPN: 546-00437B) is a robust 24V AC unit designed for precise floating point control in lab and fume hood applications. With a 90° stroke and a rapid 2.3-second cycle time, it delivers efficient valve positioning. This actuator features manual return action for added flexibility during setup or maintenance.</p><p>Ideal for HVAC and industrial process control, this Siemens actuator ensures reliable performance. For Singapore buyers, 3G Electric provides SGD quotes on request, handles GST, and offers fast delivery across Singapore and Southeast Asia, with worldwide shipping available.</p>

Frequently Asked Questions

What is the control signal and stroke of this Siemens actuator?

The control signal is floating point, and the stroke is 90 degrees.

What is the cycle time and return action?

The cycle time is 2.3 seconds, and the return action is manual.

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 lab & fume hood electric actuators. 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
Siemens
Siemens
This non-fail-safe electric actuator from Siemens is designed for HVAC damper or valve control. It features a floating point, non-spring return operation with 44 lb-in torque. The actuator accepts 24V AC input and uses a hardwired electrical connection for reliable positioning in ventilation and air conditioning systems
Siemens
Siemens
Fail-safe spring return actuator for HVAC dampers and valves. Provides 160 lb-in torque on 24V AC/DC power with 5 W running and 3 W holding. Includes two auxiliary switches and hardwired connection. NEMA 2 / IP54 rated for indoor use
Siemens
Siemens
Non-spring-return electric actuator for HVAC damper control. Delivers 44 lb-in torque, operates on 24V AC/DC input with 0-10V DC proportional output. Hardwired connection, plenum rated, NEMA 2/IP54 enclosure
Siemens
Siemens
Floating point fail-safe actuator with spring return for HVAC damper or valve control. Delivers 160 lb-in torque, operates on 24V AC/DC, and includes two auxiliary switches. Hardwired, plenum rated, with NEMA 2 / IP54 enclosure
Siemens
Siemens
This non-fail-safe electric actuator provides on/off control for dampers in HVAC and air-handling systems. It delivers 44 lb-in torque, operates on 24V AC/DC with 1W power, and includes two auxiliary switches. The plenum-rated unit features a hardwired connection and is rated NEMA 2 / IP54
Siemens
Siemens
Non-spring-return electric actuator for HVAC damper or valve control. Rated 221 lb-in torque, 1.4W power, 24V AC/DC input. NEMA 2 / IP54 enclosure, plenum rated, hardwired connection

More from Siemens

View all Siemens parts

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first