Belimo FSNF120-S Damper Actuator

Belimo FSNF120-S Damper Actuator delivers reliable ON/OFF control for air handling and HVAC applications. This direct-coupled, spring-return actuator is engineered for fire and smoke control in HVAC systems.

Key specs include 120 VAC, 50/60 Hz operation, 70 in-lb torque, 95° rotation, and a rugged NEMA 1 / IP40 enclosure. Dimensions are 3.86" W x 3.25" D x 10.2" H; shaft diameter ranges from 1/2" to 1.05"; supply connection uses 3 ft of 18 AWG cable with a 1/2" conduit connector. The zinc-coated steel body is built for reliability in typical 32–122°F environments.

Ideal for air conditioning and ventilation systems, the FSNF120-S includes two SPDT auxiliary switches and comes with UL/CAN approvals for both US and Canada.

• ON/OFF, Direct Coupled, Spring Return for precise damper control.
• Electrical: 120 VAC, 50/60 Hz; Running 23 VA, Holding 9 VA.
• Motion: 70 in-lb torque; 95° rotation.
• Durability: NEMA 1 / IP40 enclosure; Zinc-coated steel; 32–122°F operating range.
• Connections: Shaft 1/2" to 1.05"; 3 ft of 18 AWG cable with 1/2" conduit connector.
• Includes: Two SPDT auxiliary switches.
• Approvals: UL (US/Canada), UL 873, CAN/CSA C22.2, ISO 9001.