Belimo NR24A-SZ - analogue rotary actuator for ball valves

Belimo NR24A-SZ rotary actuator

An analogue actuator for ball valves, designed for use in stationary heating, ventilation and air-conditioning systems. It is mounted directly on the ball valve using a single central screw.

Key features and specifications

• Motor torque: 10 Nm.
• Rated voltage: AC/DC 24 V; operating supply range: AC 19.2...28.8 V / DC 19.2...28.8 V.
• Operating range of control signal Y: 0.5...10 V; feedback signal U: 0.5...10 V.
• Motor running time: 90 s / 90°.
• Power consumption during operation: 2.5 W; at rest: 0.4 W; rated power: 5 VA.
• Power and control connection: Cable 1 m, 4x 0.75 mm².
• Manual override by push button with locking option; rotation angle adjustable using mechanical stops.
• Enclosure protection rating IEC/EN: IP54; NEMA/UL degree of protection: NEMA 2.
• Ambient temperature: -30...50°C [-22...122°F].

The actuator is protected against overload and stops automatically when it reaches the end stop. Several actuators can be operated in parallel after checking the operating data.