Product Description
The Siemens 546-00437B is a 24 VAC laboratory electronic actuator intended for damper and fume hood control. It accepts floating/3-position (two 24 VAC digital inputs), 0-10 VDC, and 4-20 mA control signals and provides selectable fail-safe behavior as well as manual override. The actuator includes integral current sensing protection and offers multiple rotation angle options for integration with HVAC and lab room control systems.
- Operates at 24 VAC; torque 97 lb-in for damper and fume hood actuation
- Accepts floating/3-position (two 24 VAC inputs), 0-10 VDC, 4-20 mA, and Siemens pulsed signals
- Selectable power-failure options (hold last position or fail-safe NO/NC), manual override, and integral current sensing
Product Highlights
24 VAC laboratory actuator with 97 lb-in torque, multi-input control (floating/0-10 V/4-20 mA), selectable fail-safe modes, and 45/60/90 degree rotation options
Product Information
Standard Information
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Brand: SIEMENS
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Manufacturer Part Number: 546-00437B
Technical Specifications
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Brand: SIEMENS
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MPN: 546-00437B
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Manufacturer: Siemens Building Technologies
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Product Type: Laboratory electronic actuator
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Product Family: Lab Controls
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Input Voltage: 24 VAC
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Torque: 97 lb-in
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Control Inputs: Floating/3-position (two 24 VAC digital inputs), 0-10 VDC, 4-20 mA, Siemens pulsed signal
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Rotation Angles: 45, 60, 90 degrees
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Power Failure Options: Hold last position or fail-safe (Normally Open/Normally Closed)
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Selectable Fail-safe Action: Retract or extend
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NEC Class: Class 2 isolated interface board
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Manual Override: At the interface board
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Actuator Protection: Integral current sensing protection
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Enclosure Option: Galvanized enclosure option for 90 degree rotation mounting
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Typical Applications: Fume hood damper actuation, room pressurization control, HVAC damper control
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SKU: 546-00437B
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Document - Datasheet: Document No. 149-398 (LA546 technical specification)
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Document - Installation Instructions: Document No. 546-00092 (installation instructions)
