Belimo NFB24-MFT-S Actuator
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Belimo NFB24-MFT-S Actuator

Belimo NFB24-MFT-S Actuator

The Belimo NFB24-MFT-S Actuator is a heavy-duty spring return damper actuator designed for reliable fail-safe operation in commercial HVAC systems. Delivering 90 in-lb of torque, this unit utilizes Multi-Function Technology (MFT), allowing for wide-ranging field parameterization. It supports a variety of control signals, including on/off, floating point, PWM, and 2-10 VDC modulating control. For precise integration, the input impedance is rated at 500 Ohm for 4-20mA and 1500 Ohm for PWM. The built-in dual SPDT auxiliary switches provide critical position feedback for building automation systems (BAS).

Built with a brushless DC motor, this actuator ensures consistent performance and low power consumption (6.5W running, 3W holding), which helps minimize transformer sizing requirements. The spring return fail-safe mechanism activates upon power loss, driving the damper to its original position in under 20 seconds. It features a universal clamp for direct mounting on shafts up to 1.05 inches and includes a manual override crank for commissioning and maintenance. With a NEMA 2 (IP54) rating and a 95-degree angle of rotation, this 24V AC/DC actuator is the industry standard for fail-safe damper and valve control.

Key Benefits:
  • Field Flexibility: MFT allows field customization of control signals, including 0-10 VDC, 4-20 mA, and pulse width modulation.
  • Robust Fail-Safe: Mechanical spring return ensures 100% shut-off or open position during power interruptions.
  • Enhanced Monitoring: Two internal SPDT auxiliary switches (fixed at 10° and adjustable 10° to 90°) provide reliable status indication.
  • Simple Installation: Direct-coupled design with a universal shaft clamp eliminates the need for complex linkages.
  • Efficiency: Microprocessor-controlled brushless motor prevents stall damage and reduces energy costs.
Common Questions:
  • Can the motor running time be adjusted? Yes, using Belimo PC-Tool or ZTH handheld tools, the 150-second default running time can be adjusted between 40 and 150 seconds.
  • Does this model support 4-20 mA control? Yes, this MFT model supports 4-20 mA signals with a 500 Ohm resistor or through field programming.
  • Is the spring return direction reversible? Yes, the fail-safe direction is determined by the orientation of the actuator (CW/CCW mounting) on the shaft.

This item is not eligible for free shipping.

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.

$180.25

Original: $515.01

-65%
Belimo NFB24-MFT-S Actuator

$515.01

$180.25

Belimo NFB24-MFT-S Actuator

The Belimo NFB24-MFT-S Actuator is a heavy-duty spring return damper actuator designed for reliable fail-safe operation in commercial HVAC systems. Delivering 90 in-lb of torque, this unit utilizes Multi-Function Technology (MFT), allowing for wide-ranging field parameterization. It supports a variety of control signals, including on/off, floating point, PWM, and 2-10 VDC modulating control. For precise integration, the input impedance is rated at 500 Ohm for 4-20mA and 1500 Ohm for PWM. The built-in dual SPDT auxiliary switches provide critical position feedback for building automation systems (BAS).

Built with a brushless DC motor, this actuator ensures consistent performance and low power consumption (6.5W running, 3W holding), which helps minimize transformer sizing requirements. The spring return fail-safe mechanism activates upon power loss, driving the damper to its original position in under 20 seconds. It features a universal clamp for direct mounting on shafts up to 1.05 inches and includes a manual override crank for commissioning and maintenance. With a NEMA 2 (IP54) rating and a 95-degree angle of rotation, this 24V AC/DC actuator is the industry standard for fail-safe damper and valve control.

Key Benefits:
  • Field Flexibility: MFT allows field customization of control signals, including 0-10 VDC, 4-20 mA, and pulse width modulation.
  • Robust Fail-Safe: Mechanical spring return ensures 100% shut-off or open position during power interruptions.
  • Enhanced Monitoring: Two internal SPDT auxiliary switches (fixed at 10° and adjustable 10° to 90°) provide reliable status indication.
  • Simple Installation: Direct-coupled design with a universal shaft clamp eliminates the need for complex linkages.
  • Efficiency: Microprocessor-controlled brushless motor prevents stall damage and reduces energy costs.
Common Questions:
  • Can the motor running time be adjusted? Yes, using Belimo PC-Tool or ZTH handheld tools, the 150-second default running time can be adjusted between 40 and 150 seconds.
  • Does this model support 4-20 mA control? Yes, this MFT model supports 4-20 mA signals with a 500 Ohm resistor or through field programming.
  • Is the spring return direction reversible? Yes, the fail-safe direction is determined by the orientation of the actuator (CW/CCW mounting) on the shaft.

This item is not eligible for free shipping.

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.

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Description

The Belimo NFB24-MFT-S Actuator is a heavy-duty spring return damper actuator designed for reliable fail-safe operation in commercial HVAC systems. Delivering 90 in-lb of torque, this unit utilizes Multi-Function Technology (MFT), allowing for wide-ranging field parameterization. It supports a variety of control signals, including on/off, floating point, PWM, and 2-10 VDC modulating control. For precise integration, the input impedance is rated at 500 Ohm for 4-20mA and 1500 Ohm for PWM. The built-in dual SPDT auxiliary switches provide critical position feedback for building automation systems (BAS).

Built with a brushless DC motor, this actuator ensures consistent performance and low power consumption (6.5W running, 3W holding), which helps minimize transformer sizing requirements. The spring return fail-safe mechanism activates upon power loss, driving the damper to its original position in under 20 seconds. It features a universal clamp for direct mounting on shafts up to 1.05 inches and includes a manual override crank for commissioning and maintenance. With a NEMA 2 (IP54) rating and a 95-degree angle of rotation, this 24V AC/DC actuator is the industry standard for fail-safe damper and valve control.

Key Benefits:
  • Field Flexibility: MFT allows field customization of control signals, including 0-10 VDC, 4-20 mA, and pulse width modulation.
  • Robust Fail-Safe: Mechanical spring return ensures 100% shut-off or open position during power interruptions.
  • Enhanced Monitoring: Two internal SPDT auxiliary switches (fixed at 10° and adjustable 10° to 90°) provide reliable status indication.
  • Simple Installation: Direct-coupled design with a universal shaft clamp eliminates the need for complex linkages.
  • Efficiency: Microprocessor-controlled brushless motor prevents stall damage and reduces energy costs.
Common Questions:
  • Can the motor running time be adjusted? Yes, using Belimo PC-Tool or ZTH handheld tools, the 150-second default running time can be adjusted between 40 and 150 seconds.
  • Does this model support 4-20 mA control? Yes, this MFT model supports 4-20 mA signals with a 500 Ohm resistor or through field programming.
  • Is the spring return direction reversible? Yes, the fail-safe direction is determined by the orientation of the actuator (CW/CCW mounting) on the shaft.

This item is not eligible for free shipping.

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.