CARRIER Damper Actuator: Dampers, On/Off, Spring Return, 10 lb-in, 24V, Hardwired
The CARRIER Damper Actuator (SKU 877HY2, MPN HF21KJ007) is a fail-safe actuator with spring return, designed for damper applications. It operates on 24V input voltage with a 24V AC output signal, features a 45°…
SKU 3G-OTH-68347
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Product Description
The CARRIER Damper Actuator (SKU 877HY2, MPN HF21KJ007) is a fail-safe actuator with spring return, designed for damper applications. It operates on 24V input voltage with a 24V AC output signal, features a 45° stroke degree and CCW shaft rotation, and uses a self-centering clamping shaft type with hardwired electrical connection.
Frequently Asked Questions
What is the CARRIER HF21KJ007 damper actuator used for?
The CARRIER HF21KJ007 is a fail-safe damper actuator with spring return, used in HVAC systems to control air dampers. It provides on/off positioning with a 45° stroke and 10 lb-in torque, ensuring reliable operation in building automation and ventilation applications.
What are the specifications of the CARRIER HF21KJ007 damper actuator?
The CARRIER HF21KJ007 operates on 24V input with a 24V AC output signal. It features a 45° stroke, CCW shaft rotation, self-centering clamping shaft, and hardwired electrical connection. It is NEMA 1 / IP40 rated and includes spring return for fail-safe operation.
Where to buy the CARRIER HF21KJ007 damper actuator worldwide?
3G Electric supplies the CARRIER HF21KJ007 damper actuator worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.
How to install the CARRIER HF21KJ007 damper actuator?
Mount the actuator on the damper shaft using the self-centering clamping mechanism. Ensure 24V power is disconnected during wiring. Connect hardwired leads per the wiring diagram, verify CCW rotation, and test spring return function before commissioning.
Used in
Common applications for CARRIERCARRIER Products
3G Electric supplies CARRIER fail-safe actuators with spring return. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.





