BELIMO NM230A-SR Used Working Damper Actuators Damper Actuator

Product Overview

The Belimo NM230A-SR is a high-precision, non-spring return Damper Actuator designed for regulating air dampers in ventilation and air-conditioning systems. Operating on a 230V AC supply, this "SR" (Superportional) model utilizes a 2 to 10V DC modulating control signal, allowing for exact positioning of dampers in HVAC plants. As a Used Working unit, it provides a reliable, high-torque solution for building automation, offering smooth operation and energy-efficient performance in a compact, maintenance-free housing.

Key Features

• Modulating Control: Responds to a 2 to 10V DC control signal (0 to 10V compatible) for proportional positioning, providing a 2 to 10V DC feedback signal for position monitoring.
• High Torque Output: Delivers a robust 10 Nm of torque, capable of driving air dampers up to approximately 2 square meters in size.
• Universal Spindle Clamp: Features a versatile, U-bolt spindle clamp that fits both round and square damper shafts, ensuring easy retrofitting and installation.
• Selectable Direction: Equipped with a manual switch to change the direction of rotation (clockwise or counter-clockwise) to match the damper's orientation.
• Overload Protection: The actuator is electronically protected against overloading; it stops automatically when it reaches the mechanical end-stops, eliminating the need for limit switches.
• Manual Override: Includes a push-button manual override for temporary manual positioning during commissioning or maintenance.
• Adjustable Angle of Rotation: Features mechanical end-stops that can be adjusted to limit the rotation angle as required by the specific damper installation.

Item Condition (Used Working)

• Functional Status: Used Working. This actuator has been professionally bench-tested. The internal motor and gear train operate smoothly. The 2 to 10V modulating control response and feedback signal have been verified for accuracy.
• Physical State: Clean industrial condition. The electrical cable is intact, and the spindle clamp shows no signs of rounding or stripped threads. The plastic housing is free of cracks.
• Technical Integrity: The internal limit sensing is fully functional. The unit has been cleared of any environmental debris and is ready for immediate installation.
• Note: Professional HVAC installation is recommended. Ensure the supply voltage matches the 230V AC requirement before wiring to prevent damage to the electronics.

Package Includes

1. 1 x Belimo NM230A-SR Modulating Damper Actuator