NFB24-SR | Belimo | Actuators & Dampers

Damper Actuator, 90 in-lb, Spring Return, 24V, Modulating

Brand:Belimo

MPN:NFB24-SR

SKU:NFB24-SR

List Price:

$674.97

Today's Price:

$350.98

98 in stock

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product datasheet

installation instructions

catalog page

How To: Pre-Tension a Damper Actuator

product specifications

Enclosure Rating

NEMA 2, IP54

Actuator Series

NFB(X)

Agency Listings

cULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1:02, CE acc. to 2004/108/EC

Ambient Temperature Range

-22 to 122 °F (-30 to 50 °C)

Angle of Rotation

95°

Application Type

Air

Electrical Connection

3ft 1m, 18 GA appliance cable with 1/2 in conduit connector

Feedback Output U

2 to 10 VDC, 0.5 mA max

Housing Material

Zinc Coated Metal and Plastic Casing

Humidity

max. 95% RH non-condensing

Input Impedance

100 k Ω for 2 to 10 VDC (0.1 mA), 500 Ω for 4 to 20 mA

Manual Override

5mm Hex Crank (3/16 in Allen), Supplied

Position Indication

visual indicator, 0° to 95° (0° is full spring return position)

Power Consumption Holding

2.5 W

Power Consumption Running

3.5 W

Power Supply

24 VAC, 24 VDC

Power Supply Type

24V

Quality Standard

ISO 9001

Running Time

95 seconds

Servicing

maintenance free

Shaft Diameter

1/2 in to 1.05 in round, centers on 1/2 in and 3/4 in with insert, 1.05 in without insert

Storage Temperature Range

-40 to 176 °F (-40 to 80 °C)

Torque

90 in-lb

Transformer Sizing

6 VA (class 2 power source)

Unit of Measure

Supply Va

6 VA

Control Signal

Analog

Supply Voltage (Nominal)

24 VAC

product series specifications

Input Impedance: SR Models: 100 kO @ 0/2-10 VDC; 500 O @ 4-20 mA; MFT Models: 100 kO @ 0/2-10 VDC; 500 O @ 4-20 mA; 1500 O @ PWM, float, on/off

Motor: Brushless DC

Manual Override: Manual crank (except TF)

Wiring: TFB, LF: 3' (0.9 m) cable, 18 AWG, plenum rated (modulating models) - 3' (0.9 m) appliance cable (on/off, MFT, -S models); NFB, AFB, EFB: 3' (0.9 m) appliance cable, 18 AWG; NEMA 4: Terminal blocks inside housing

Conduit Connection: w/Cables: 1/2" NPT; NEMA 4: Four knockouts for waterproof conduit fittings

Feedback: 2-10 VDC (-SR and -MFT models only)

Auxiliary Switch: TFB, LF (-S): 1 SPDT, 3A @ 250V; NFB, AFB, EFB (-S): 2 SPDT, 3A @ 250V

Action: 2-Position: CW/CCW reversible mounting; Float/Prop.: DA/RA switch, CW/CCW rev. mt.

Spring Return Time: < 60 seconds

Rotation: 95°

Noise: TFB, LF, NFB: < 62 db; AFB: < 45 db; EFB: < 71.4 db

Resolution: 100 steps

Life Expectancy: 2-Position: 60,000 cycles; Float/Prop.: 60,000 cycles; 500,000 repositions

Operating Temperature: -22° to 122°F (-30° to 50°C); NEMA 4 models with heater option can go down to -40°C

Operating Humidity: 5 to 95% RH

Enclosure Rating: TFB: NEMA 2 (IP42); LF, NFB, AFB, EFB: NEMA 2 (IP54); NEMA 4: NEMA 4 (IP66)

Approvals: cULus, CE, RoHS

Warranty: 5 years

product series features

Symmetrical, reversible rotation design for installation flexibility
ISO 9001 manufacturing facility assures high quality
NEMA 4 Enclosure Rating for outdoor locations available on AFB, EFB and NFB models
Low power consumption for high efficiency and smaller transformer sizing
MFT models offer flexibility to customize and adapt a single actuator to various controllers and applications

more information & related documents

Series Description

The Belimo TFB, Belimo LF, Belimo NFB, Belimo AFB, and Belimo EFB Series direct-coupled air damper actuators provide control of dampers and valves for spring return applications. The damper actuators come in two-position, tri-state, proportional, and Multi-Function Technology (MFT) models. All include spring return to drive the damper or valve to a normal position when power is lost. Unique universal power supply models work with 24 Volt AC to 240 Volt AC or 24 Volt DC to 125 Volt DC. The new EFB Series is true spring return with a high 270 in-lb torque output and most models are available with optional NEMA 4 housing. It is possible to dual-mount EF actuators on one shaft, for a total of 540 in-lb. This actuator series is indispensable for Building Automation System BAS and HVAC applications.

Kele Description

ACT/SR/90INLB(10NM)/ 24V/2-10VDC

Manufacturer

Belimo