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Siemens 126.1P damper actuator 24V 160 in-lb spring return IP54

SIEMENS

SIEMENS 126.1P actuator 24 V 160 in-lb spring return IP54

SKU CH-1RP5-6ZCR8

24 V spring-return damper actuator delivers 160 in-lb torque with 90-degree rotation and 15-second close time

  • TypeLearning Thermostats
  • 160 in-lb torque drives heavy dampers reliably
  • Spring return fails safe in 15 seconds
  • 24 V AC/DC input suits common control circuits
  • IP54 rating protects against dust and water splash
  • Self-centering shaft coupling simplifies direct mounting

160 in-lb spring-return actuator

The Siemens 126.1P actuator delivers 160 in-lb of rated torque for damper control in HVAC systems. It operates on 24 V AC/DC and features a spring-return function that drives the shaft to its fail-safe position within 15 seconds. An IP54 rating protects the unit against dust and water splashes in typical plant environments.

Direct-mount upgrade for On/Off dampers

This model replaces older On/Off actuators that lack a 0 to 10 V DC feedback signal or a self-centering shaft coupling. The direct-mount design reduces installation time, while the SPDT auxiliary contact provides position confirmation to the building automation system. The upgrade is worth it when precise position feedback and faster commissioning are required.

Suits BAS-integrated damper automation

The actuator suits engineers retrofitting or expanding building automation systems that demand On/Off control with analog position feedback. It is not intended for applications requiring modulating control signals other than 0 to 10 V DC, nor for installations where an IP54 enclosure does not meet the environmental specification.

Highlights

  • 160 in-lb torque drives heavy dampers reliably
  • Spring return fails safe in 15 seconds
  • 24 V AC/DC input suits common control circuits
  • IP54 rating protects against dust and water splash
  • Self-centering shaft coupling simplifies direct mounting

Specifications

BrandSIEMENS
TypeLearning Thermostats

Questions about this item

What shaft size does the 126.1P actuator's self-centering coupling accept?

The self-centering shaft coupling mounts directly onto the damper shaft without separate brackets.

How is the 24 V AC/DC supply wired to the 126.1P actuator?

Hardwired connections are made to the internal terminal block; observe polarity for the 0–10 V DC feedback signal.

Which components of the 126.1P actuator require periodic inspection?

Check the spring-return mechanism and SPDT auxiliary contact after each 15-second cycle for wear.

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