Belimo B210 TF24-3 US B2TF0102 Spring Return Actuator

Belimo TF24-3 US B2TF0102 Spring Return Actuator is a direct-coupled, 24-volt damper actuator designed for HVAC applications that mounts directly to a damper shaft up to 1/2 inch in diameter without the need for crankarms or linkage. It provides spring-return fail-safe operation, returning the damper to a designated position when power is lost, and is intended for on/off control of dampers in ventilation, economizer, and smoke-control applications. The compact unit is part of Belimo's TF24 series and uses a 24 V control input; the B2TF0102 code identifies this exact spring-return variant for retrofit or new installations. With its direct-mount capability and minimal installation footprint, this actuator is well-suited for retrofit projects in commercial buildings where reliable, fail-safe damper control is required.