Belimo LMB24-3-T Motor Actuator

When you need reliable damper control, the Belimo LMB24-3-T Motor Actuator is a solid choice for your HVAC system. This non-spring return damper actuator delivers 45 in-lb [5 Nm] of torque, making it suitable for precise airflow management in various applications. Engineered for On/Off and floating point control, it operates efficiently on a versatile 24 Vac/Vdc power supply. The integrated sensorless brushless DC motor, managed by an Application Specific Integrated Circuit (ASIC), ensures consistent performance and includes Digital Rotation Sensing (DRS) for overload protection, preventing damage in stall conditions. With a rapid 95-second running time for 90° rotation, this unit provides responsive control. Its direct-coupled design simplifies installation on damper shafts from 1/4” to 5/8”, with an accessory clamp accommodating up to 3/4” shafts. A convenient external push button allows for manual override, and the visual indicator provides clear position feedback. Operating quietly at 35 dB(A), it maintains a comfortable environment.

• Key Benefits:
• Versatile Control: Supports both On/Off and floating point control signals for broad system compatibility.
• Robust Torque: Provides 45 in-lb of torque for effective damper positioning.
• Energy Efficient: Features a brushless DC motor with low power consumption (1.5 W running, 0.2 W holding).
• Direct Mount Design: Simplifies installation on standard damper shafts without complex linkages.
• Overload Protection: Electronically protected against overload across its full 95° rotation.
• Maintenance-Free: Designed for long-term reliability with no required servicing.

Common Questions:

Q: What power supply is required for the Belimo LMB24-3-T?
A: This actuator is designed for 24 Vac (±20% 50/60 Hz) or 24 Vdc (±10%) power, offering flexibility for various control systems.

Q: Can this actuator be manually adjusted?
A: Yes, it features an external push button for manual override, allowing for quick adjustments or system testing.

Q: What shaft sizes can this actuator accommodate?
A: It mounts directly to damper shafts from 1/4” to 5/8” in diameter. An accessory clamp can extend compatibility to shafts up to 3/4”.

Q: Is this actuator suitable for plenum applications?
A: Yes, the LMB24-3-T is UL 2043 Compliant, making it suitable for use in air plenums as per NEC Section 300.22(C) and IMC Section 602.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.