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Siemens GDE131.1P damper actuator, direct-mount, IP54 housing

SIEMENS

SIEMENS GDE131.1P ACT NSR PLENUM 24/108L 5NM thermostat

SKU CH-3R65-AZEAK

A learning thermostat actuator with 44 in-lb torque, 24V AC input and 0-10V DC output for building automation systems

  • TypeLearning Thermostats
  • Learning thermostat adapts to building automation
  • 24V AC input suits standard HVAC wiring
  • 44 in-lb torque drives dampers reliably
  • IP54 rating protects against dust and water splashes
  • 108 second stroke time ensures smooth damper control

Siemens GDE131.1P learning thermostat

The Siemens GDE131.1P is a new learning thermostat designed for building automation systems. It provides direct-mount damper control with a 90-degree stroke and clockwise or counter-clockwise rotation. The actuator operates on 24V AC input and delivers a rated torque of 44 in-lb. It suits installers needing floating-point signal integration.

Hardwired connection with 0-10V output

The unit uses a hardwired electrical connection and supplies an output signal of 0 to 10V DC for system feedback. A set-screw shaft coupling secures the damper shaft without additional linkage kits. Spring return is not included, so the actuator holds position without spring assistance. NEMA 2 and IP54 ratings protect the housing in indoor environments.

108-second cycle time constraint

The actuator requires 108 seconds to complete a full close stroke, which sets the minimum response window for damper sequencing. Control loops must accommodate this fixed timing rather than faster actuation. The 24V AC supply and floating-point input define the interface limits for the building automation system. No wireless or network protocols are supported.

Highlights

  • Learning thermostat adapts to building automation
  • 24V AC input suits standard HVAC wiring
  • 44 in-lb torque drives dampers reliably
  • IP54 rating protects against dust and water splashes
  • 108 second stroke time ensures smooth damper control

Specifications

BrandSIEMENS
TypeLearning Thermostats

Questions about this item

Does the 5 Nm actuator need periodic lubrication or internal part replacement?

The actuator uses a non-spring-return mechanism with a set-screw shaft coupling and has no user-serviceable internal components, so no scheduled lubrication or part replacement is required.

Will the 108-second stroke time lengthen if the damper is cycled continuously?

The 108-second stroke at 90 degrees is a mechanical constant of the gear train; sustained cycling does not alter the timing, though the 24 V AC supply must remain stable.

How much heat does the unit generate and what is its noise level when running all day?

Power draw at 24 V AC is low, so heat output is minimal; the IP54-rated enclosure contains the motor, making audible noise barely noticeable in a plenum installation.

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