FSNF230 US | Belimo | Fire&Smoke Damper ActuatorFSNF230 US Fire & Smoke Actuator, On Off , 230VAC , spring return (fail safe) The 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 350F. Square footage of damper operated will

The actuator is mounted directly to a damper shaft from 1/4” up to 5/8” in diameter by means of its universal clamp

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terminal block

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28 inch WC [0