Belimo NFB24 Damper Actuator

Belimo NFB24 Damper Actuator is an ON/OFF, direct-coupled damper actuator designed for HVAC systems. Its spring-return design, 24V AC/DC operation, and rugged enclosure deliver reliable, fail-safe damper control.

Key specs include 95-degree travel, 90 Inch-Pound torque, and a compact footprint—3.15" W x 3.42" D x 9.69" H—with a NEMA 2, IP54 enclosure for rugged performance in HVAC environments. The unit operates from -22 to 122°F and features a zinc-coated metal body with a plastic casing. Shaft diameter accommodates 1/2" to 1.05" shafts. It uses a 3 ft 18 AWG appliance cable with a 1/2" conduit connector and includes a 5 mm hex crank.

• ON/OFF direct-coupled operation for precise damper control
• Spring-return design provides fail-safe positioning
• 24V AC/DC input with 50/60 Hz compatibility; 6W running, 2.5W holding
• 90 Inch-Pound torque and 95° rotation for versatile damper travel
• NEMA 2 / IP54 enclosure for reliable performance in harsh environments
• Compact installation: 3.15"W x 3.42"D x 9.69"H; shaft 1/2"–1.05"; 3 ft 18 AWG cable with 1/2" conduit; includes 5 mm hex crank

Approved to UL (US/Canada), UL 60730, CE, CAN/CSA E60730, and ISO 9001 standards, the Belimo NFB24 is a dependable choice for modern HVAC systems.