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Belimo NFB24-MFT-S

SKU: CS3175192MPN: NFB24-MFT-S

Damper Actuator, 90 in-lb [10 Nm], Spring return, AC/DC 24 V, 2...10 V, 2 x SPDT, MFT/programmable

Product Details

Belimo’s new NFB and NFX Series sets a new standard for direct-coupled spring return actuators in the HVAC market. A compact size, low power consumption and 50% increase in minimum torque output set the new NFB and NFX apart from other market solutions. More torque combined with faster running times for both motor drive and spring return widen the application fields giving customers a cost effective solution with high quality.

Features:

  • 90 in-lbs (10 Nm) min. torque. 50% more than original NF.
  • New smaller housing for tight spaces, plus reduced shaft-center to edge distance: 1.25” compared to 1.97” with today’s NF.
  • Manual override is now standard on all models. Provides same benefits as today’s AF series; faster installation and easier maintenance of equipment with lock-in-place switch.
  • Universal power supply (On/Off models only) can accept 24 up to 240 VAC. One actuator for all power supply voltages, ideal for customers with limited storage space (store rooms, service vehicles, etc)
  • 3, 10 and 16 ft cable options just like non-spring return actuator (X models only)
  • Built-in mechanical limit stop, a separate accessory no longer needed.

Attributes

Control MFT/programmable
Auxillary Switch 2 x SPDT
Fail-Safe Spring Return
Torque 90 in-lb
Nominal Voltage AC/DC 24 V
Transformer Sizing 9 VA (class 2 power source)
Enclosure UL Enclosure Type 2
Power Supply 24 VAC, ±20%, 50/60 Hz, 24 VDC, -10% / +20%
Power Consumption In Operation 6.5 W
Power Consumption In Rest Position 3 W
Electrical Connection (2) 18 GA appliance cables with ½” conduit connectors, 3 ft [1 m],
Overload Protection electronic throughout 0…95° rotation
Operating Range 2…10 V (default), 4…20 mA w/ ZG-R01 (500 Ω, ¼ W resistor), variable (VDC, PWM, on/off, floating point)
Operating Range Y Variable Start point 0.5…30 V End point 2.5…32 V
Input Impedance 100 kΩ for 2…10 V (0.1 mA), 500 Ω for 4…20 mA, 1500 Ω for PWM, On/Off and Floating point
Position Feedback 2…10 V, Max. 0.5 mA, VDC variable
Angle Of Rotation 95°, adjustable with mechanical end stop, 35…95°
Direction Of Motion Motor selectable with switch 0/1
Position Indication Mechanical
Running Time (Motor) default 150 s, variable 40…150 s
Running Time Fail-Safe <20 s
Ambient Humidity max. 95% r.H., non-condensing
Ambient Temperature -22…122°F [-30…50°C]
Storage Temperature -40…176°F [-40…80°C]
Degree Of Protection Iec/En IP54
Degree Of Protection Nema/Ul NEMA 2
Connection cable
Servicing maintenance-free
Housing Material Galvanized steel and plastic housing
Nominal Voltage Dc 24 V
Nominal Voltage Ac 24 V
Noise Level, Motor 40 dB(A)
Torque Motor 90 in-lb [10 Nm]
Electrical Protection actuators are double insulated
Quality Standard ISO 9001
Noise Level, Fail-Safe 62 dB(A)
Angle Of Rotation Adaptation off (default)
Agency Listing cULus listed to UL60730-1A:02; UL 60730-2-14:02 and CAN/CSA-E60730-1:02; Listed to UL 2043 - suitable for use in air plenums per Section 300.22© of the NEC and Section 602.2 of the IMC
Shaft Diameter ½…1.05” round, centers on ½” and ¾” with insert, 1.05” without insert
Auxiliary Switch 2 x SPDT, 3 A resistive (0.5 A inductive) @ AC 250 V, one set at 10°, one adjustable 10…90°
Override Control MIN (minimum position) = 0% MID (intermediate position) = 50% MAX (maximum position) = 100%
Fail-Safe Function Spring return
Control Type Web MFT/Programmable
Fail-Safe YES

Specifications

SKUCS3175192
MPNNFB24-MFT-S