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Compact rectangular actuator with spring-return shaft coupling and mounting bracket included

SIEMENS

SIEMENS Modulating Spring-Return Actuator 20 In-Lbs 90 Deg 30 Sec

SKU CH-H36W-RG5NV

A spring-return modulating actuator delivers 20 in-lbs torque over 90 degrees in 30 seconds with 2-10 VDC control

  • TypeLearning Thermostats
  • Modulating 2-10 VDC signal enables precise damper control
  • 20 in-lb torque drives dampers up to 90 degrees
  • Spring return in 15 seconds restores position on power loss
  • 24 VAC operation with 4.5 VA consumption fits standard HVAC circuits
  • Replaces Honeywell MS7505A2008 for direct retrofit compatibility

Actuator for damper control

This SIEMENS modulating spring-return actuator delivers 20 in-lbs of torque over a 90-degree stroke. It operates on 24 VAC with a 2-10 VDC control signal and completes the drive stroke in 30 seconds. The unit suits HVAC damper applications requiring proportional positioning.

Mounting hardware included

The package supplies a mounting bracket, screws and a hex key for direct installation. A 3-foot 18 AWG lead provides the electrical connection without extra wiring parts. Spring return activates in 15 seconds to fail-safe the damper on power loss.

Verify voltage and signal match

Confirm the control system supplies 24 VAC and a 2-10 VDC modulating signal before ordering. The ambient temperature range spans -25 to 130 F, so ensure the installation environment stays within those limits. Power draw is 4.5 VA, so the transformer must support that load.

Highlights

  • Modulating 2-10 VDC signal enables precise damper control
  • 20 in-lb torque drives dampers up to 90 degrees
  • Spring return in 15 seconds restores position on power loss
  • 24 VAC operation with 4.5 VA consumption fits standard HVAC circuits
  • Replaces Honeywell MS7505A2008 for direct retrofit compatibility

Specifications

BrandSIEMENS
TypeLearning Thermostats

Questions about this item

How often does the spring-return mechanism need replacement?

The spring returns the shaft in 15 seconds on power loss and is built into the actuator housing with no separate service interval.

What limits continuous operation first?

The 4.5 VA power draw at 24 V and the -25 to 130 °F ambient range set the thermal and electrical envelope for all-day use.

How much noise and heat does it produce running all day?

The unit draws 4.5 VA at 24 V with no fan, so audible noise is minimal and heat stays within the rated ambient range.

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