Motorized Fire Damper
Introduction: The is normally open, when on fire, smoke sensors output electric signal DC 24V through control center, and the electromagnet in the actuator acts, damper is automatically closed, then outputs the close electric signal. The damper can be manual closed. Manual reset is needed after the damper acting. When the temperature getting up to 70℃, the fuse will act and the damper is automatically closed. Technical Specifications: Product Motorized
Introduction:
The motorized fire damper is normally open, when on fire, smoke sensors output electric signal DC 24V through control center, and the electromagnet in the actuator acts, damper is automatically closed, then outputs the close electric signal. The damper can be manual closed. Manual reset is needed after the damper acting. When the temperature getting up to 70℃, the fuse will act and the damper is automatically closed.
Technical Specifications:
| Product | Motorized fire damper |
| Material | Galvanized steel sheet |
| Major component | Damper body, damper blade, shaft, bushing, fuse, inspection door, actuator |
| Size | Can be customized as request. |
| Fuse operated temperature | 70℃ or 280℃ |
| Fire resistance rating | 1.5 h |
| Control voltage | DC 24V |
| Action current | 0.3A |
| Micro switch contacts capacity | AC380V 3A |
| Air leakage | <500m3/ m2‧ h |
| Resistance coefficient fully open | <0.5 |
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