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Product Details
Belimo Aircontrols (USA), Inc. FSNF120US FS Series Fire and Smoke Actuator
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Belimo Aircontrols (USA), Inc. FSNF120US FS Series Fire and Smoke Actuator


Brand: Belimo Aircontrols (USA), Inc. | SKU: FSNF120US   | Model Number: FSNF120 US

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Fire and Smoke actuator, 70in-lb, spring return, 350 degree F for limited time, 15 sec. cycle time




ApplicationThe type FSNF spring-return actuator is intended for the operation of smoke and combination fire and smoke dampers in ventilation and air-conditioning systems. The actuator will meet requirements of UL555 and UL555S when tested as an assembly with the damper and will meet requirements of UBC for 15 second opening and closing at 350�F. Square footage of damper operated will depend on make and model and the temperature required. IMPORTANT 24VDC NOTE: The FSNF24 & -S models will not operate below 24VDC. A filtered and regulated power supply must be used.
BAE165 US165� F electric thermal sensor, SPST, normally closed.
S2A-F USAuxiliary switch, 2x SPDT, 3A (0.5A inductive) @250 VAC max.
AF-PAnti-rotation bracket AF/NF.
IND-AF2Classic AF/NF position indicator.
K4-1 USClassic AF/NF jackshaft clamp (up to 1.05?).
KH-AFClassic AF/NF crankarm for Shafts to 3/4?.
KH-AF-1 USClassic AF/NF crankarm for Jackshaft to 1.05?.
SH8Push rod for KG6 & KG8 ball joints (36? L, 5/16? diameter).
ZDB-AF2 USAngle of rotation limiter for Classic AF/NF.
ZG-100Univ. right angle bracket (17? H x 11-1/8? W x 6? base).
ZG-101Univ. right angle bracket (13? H x 11? W x 7-7/16? base).
ZG-AF USClassic AF/NF crankarm adaptor kit.
ZG-AF108Classic AF/NF crankarm adaptor kit with ZG-108.
ZG-DC1Damper clip for damper blade, 3.5? width.
ZG-DC2Damper clip for damper blade, 6? width.
ZS-100Weather shield - galvaneal (13? L x 8? W x 6? D).
ZS-150Weather shield - PC w/ foam seal (16? L x 8-3/8? W x 4? D).
ZS-260Explosion proof housing.
ZS-300NEMA 4X, 304 stainless steel enclosure.
OperationMounting of the actuator to the damper axle shaft or jackshaft (3/8? to 1.05?) is via a cold-weld clamp. Teeth in the clamp and V-bolt dig into the metal of both solid and hollow shafts maintaining a perfect connection. The specially designed clamp will not crush hollow shafts. The bottom end of the actuator is held by an anti-rotation strap or by a stud provided by the damper manufacturer. The actuator is mounted in its fail safe position with the damper blade(s) closed. Upon applying power, the actuator drives the damper to the open position. The internal spring is tensioned at the same time. If the power supply is interrupted, the spring moves the damper back to its fail-safe position.
Typical SpecificationAll smoke and combination fire and smoke dampers shall be provided with Belimo FSTF, FSLF, FSNF, or FSAF actuators. All substitutions must be approved before submission of bid. Damper and actuator shall have UL 555S Listing for 250�F (350�F). Actuator shall have been tested to UL 2043 per requirements of IMC 602.2 and NEC 300.22 (c). Where position indication is required -S models with auxiliary switches or damper blade switches will be provided per code requirements.

Product Family

Model NumberDecriptionManufacturerPriceAvail. Qty 
FSNF120SUSFS Series Fire and Smoke ActuatorBelimo Aircontrols (USA), Inc.$284.237    Add To Cart
FSNF120USFS Series Fire and Smoke ActuatorBelimo Aircontrols (USA), Inc.$236.8317    Add To Cart
FSNF230SUSFS Series Fire and Smoke ActuatorBelimo Aircontrols (USA), Inc.Call for Pricing0    View More Info
FSNF230USFS Series Fire and Smoke ActuatorBelimo Aircontrols (USA), Inc.Call for Pricing0    View More Info
FSNF24SUSFS Series Fire and Smoke ActuatorBelimo Aircontrols (USA), Inc.$277.251    Add To Cart
FSNF24USFS Series Fire and Smoke ActuatorBelimo Aircontrols (USA), Inc.$217.562    Add To Cart

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