LF24
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LF24 | Belimo | Actuators & Dampers

ACT/SR/35INLB(4NM)/24V/ON/OFF

Manufacturer:Belimo

MPN:LF24

SKU:LF24

List Price:

338.04

Today's Price:

145.00



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Availability: 74 In Stock
Available Inventory
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product family specifications

Input Impedance

-SR Models 100 kΩ @ 0/2-10 VDC; 500Ω @ 4-20 mA

-MFT Models 100 kΩ @ 0/2-10 VDC; 500Ω @ 4-20 mA; 1500Ω @ 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℉ (-40℃)

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 family 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

Family 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/35INLB(4NM)/24V/ON/OFF

Manufacturer

Belimo

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