New Original Siemens S55150‑A100 SAX61.03 Electric Valve Actuator
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Siemens S55150‑A100 SAX61.03 Electric Valve Actuator
Product Overview
Siemens SAX61.03 (Order‑No.: S55150‑A100) is an ACVATIX series electromotoric modulating valve actuator for HVAC heating, cooling water and low‑pressure steam control systems. It provides 800 N positioning force with 20 mm nominal stroke, compatible with Siemens 2‑port, 3‑port globe valves and pressure‑independent control valves. Powered by AC/DC 24 V, it accepts multi‑type modulating input signals and outputs DC 0‑10 V position feedback for closed‑loop building automation control. This is non‑spring‑return fail‑in‑place type, widely used in commercial building central air‑conditioning, chilled‑water loops and heating distribution systems
Main Functions
- Proportional modulating valve positioning responding to DC 0‑10 V, DC 4‑20 mA or 0‑1000 Ω resistance control signals from building controllers.
- Real‑time DC 0‑10 V analog position feedback to transmit actual valve opening status to BMS system.
- Manual override operation for field commissioning and emergency manual adjustment, mechanical position lockable after manual settinghit.sbt.si
- Built‑in overload and stall protection to prevent mechanical damage when reaching end‑stop positions.
- Automatic stroke calibration during power‑on initialization to match paired valve stroke range
- Reserved slot for plug‑in auxiliary switch modules to expand external status signal output functions.
- LED status indicator to display power supply, running status and fault conditions for quick on‑site diagnosis.
Technical Features
- Non‑spring‑return design, holds current valve position upon power loss (fail‑in‑place).
- Direct mechanical mounting onto matched Siemens control valves without extra adapter modification.
- Supports multiple standard industry control input signals for flexible compatibility with various BMS controllers.
- Maintenance‑free mechanical structure for long‑term continuous operation.
- IP54 enclosure protection for indoor installation environmentshit.sbt.si
- Visual stroke scale for direct local reading of valve opening degree.
- Supports parallel connection of multiple actuators under one controller output.
Technical Data Table
| Item | Specification |
|---|---|
| Model | SAX61.03 |
| Order Code | S55150‑A100 |
| Brand | Siemens |
| Positioning Force | 800 N |
| Nominal Stroke | 20 mm |
| Operating Voltage | AC/DC 24 V |
| Control Input Signal | DC 0‑10 V, DC 4‑20 mA, 0‑1000 Ω |
| Position Feedback Signal | DC 0‑10 V |
| Full‑stroke Positioning Time | 30 s |
| Power Consumption | 6.3 VA, 2.5 W; quiescent power 1.7 W |
| Protection Class | IP54 |
| Operating Ambient Temperature | -5 °C ~ +55 °C |
| Allowed Medium Temperature | -25 °C ~ 130 °C |
| Ambient Humidity | Max 95% RH non‑condensing |
| Mounting Orientation | Upright to horizontal |
| Spring Return | No |
| Auxiliary Switch | Optional plug‑in module |
| Dimensions(W × H × D) | 242 mm × 124 mm × 153 mm |
| Weight | Approx 1.78 kg |
10 Similar‑function Siemens Valve Actuator Products
- SAX61.33: 800 N, 20 mm stroke, AC/DC24 V modulating actuator with spring‑return function
- SAX61.03/MO: SAX61.03 variant with Modbus RTU communication interface
- SAX81.03: 800 N, 20 mm stroke, AC/DC24 V three‑point floating control actuator
- SAX31.03: 800 N, 20 mm stroke, AC230 V power supply modulating valve actuator
- SAX61.03U: UL‑certified North‑American market version of SAX61.03
- SAS61.03: 400 N, 5.5 mm stroke, AC/DC24 V non‑spring‑return modulating valve actuator
- SAX81.33: 800 N, 20 mm stroke, three‑point control with spring‑return safety function
- SAY61.03: 1600 N high‑force modulating electromotive actuator for large‑size HVAC control valves
- SAX31.33: 800 N, 20 mm stroke, AC 230 V supply with spring‑return safety feature
- SAV61.00: Modulating electromotive actuator for high‑capacity HVAC globe control valves
WHO WE ARE
About us
Located in Kunshan, China, Atifts Technology Co., Ltd. is a well-known enterprise specializing in electronic components distribution. We specialize in the sales of global brands of industrial automation components, with a wealth of experience in foreign product agents, and many of the world's leading manufacturers such as Keens, Schneider, SMC, ABB, Siemens, and other world-renowned manufacturers to establish a long-term and stable relations of cooperation.
Atifts Technology Co., Ltd. @ 2024
Over the years, we have always adhered to the "pioneering, pragmatic, standardized, innovative" management philosophy, and constantly promote the close integration of products and market demand. We firmly believe that only by constantly exploring new market areas, doing a good job in every detail, standardizing business processes, and continuously innovating products and services can we ensure that our products are more adaptable to market changes and meet the diversified needs of our customers.
Since the founding of the company, we have always adhered to the core concept of "survival by quality", and are committed to providing customers with high-quality electronic components. At the same time, we take specialized R & D manufacturing as the goal, market-oriented development strategy to ensure that our products are always in the forefront of the industry.
With excellent product quality, professional technical service and good market reputation, Kunshan Autofits Technology Co.,Ltd. has won the trust and support of our customers. We look forward to working with more partners hand in hand, to achieve long-term win-win relationship, and jointly promote the prosperity of the electronic components industry.
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