Belimo NRF24A-SR-S2 - rotary actuator for ball valves

Name: Belimo NRF24A-SR-S2 - rotary actuator for ball valves
Brand: Belimo
SKU: NRF24A-SR-S2
Price: 1354.05 PLN
Availability: BackOrder

Belimo

zł1,354.05

VAT included

zł1,100.85 tax excluded

Rotary actuator for ball valves with a fail-safe function provided by a return spring. Torque 10 Nm, AC/DC 24 V supply and 2...10 V modulating control. When the power supply fails, it returns to the closed position (NC).

Motor running time is 90 s / 90°. The actuator has a 2...10 V position feedback signal and two integrated auxiliary switches 2x SPDT.

Delivery in approx. 14 days

Belimo NRF24A-SR-S2 rotary actuator

The NRF24A-SR-S2 is a modulating actuator for ball valves. During operation, it positions the valve according to the analogue control signal and tensions the return spring. If the power supply is interrupted, the spring moves the valve to the fail-safe position: closed (NC).

Key features and specifications

Motor and return spring torque: 10 Nm.
Rated voltage: AC/DC 24 V; rated voltage frequency: 50/60 Hz.
Operating range of control signal Y: 2...10 V; position feedback signal U: 2...10 V.
Motor running time: 90 s / 90°; emergency return time: <20 s @ -20...50°C, <60 s @ -30°C.
Auxiliary switches: 2x SPDT, 1x 10% / 1x 11...100%.
Power consumption during operation: 3.5 W; in the rest position: 2.5 W; for cable sizing: 6 VA.
Power and control connection: 1 m cable, 4x 0.75 mm²; auxiliary switch connection: 1 m cable, 6x 0.75 mm².
Manual adjustment using a crank and locking switch; mechanical position indicator and adjustable rotation angle stops.
Degree of protection: IP54; ambient temperature: -30...50°C.

The actuator is intended for stationary heating, ventilation and air-conditioning installations. It is mounted on the ball valve with one screw, with the orientation selectable in 90° increments.