Ceiling-Mounted Dry Powder Automatic Fire Extinguisher
The Ceiling-Mounted Dry Powder Automatic Fire Extinguisher is a self-activating, power-independent suppression device designed for confined, high-risk environments. Activated either by a 68 °C (154 °F) thermal bulb or a DC 24V signal, it discharges ABC dry chemical powder within 5 seconds to extinguish Class A, B, C, and energized electrical fires. Operating reliably from –10 °C to +50 °C (14 °F to 122 °F), and with a five-year service life, it is ideal for electrical rooms, archives, and compact industrial spaces. Certified to UL 525 and NFPA 2001 standards.
Technical Parameters
| Parameter | Details |
| Product Type | Ceiling-Mounted Dry Powder Automatic Fire Extinguisher |
| Activation Mode | Heat-activated (68 °C / 154 °F) or Electric-activated (DC 24V) |
| Extinguishing Agent | ABC Dry Chemical Powder |
| Agent Capacity | 4 kg – 12 kg (8.8 – 26.5 lbs), customizable |
| Spray Time | ≤5 seconds |
| Discharge Method | 360° radial dispersal via fixed nozzle |
| Spray Coverage Area | 9–21 m² (96–226 sq.ft), depending on unit capacity |
| Operating Temperature Range | –10 °C to +50 °C (14 °F to 122 °F) |
| Working Pressure | 1.2 MPa nominal |
| Mounting Position | Ceiling-mounted (flush or suspended installation) |
| Fire Class Coverage | Class A, B, C fires and live electrical fires |
| Response Time | Instantaneous upon threshold detection |
| Material | Corrosion-resistant steel body with high-strength powder coating |
| Service Life | 5 years (cylinder & agent) |
| Certifications | UL 525, NFPA 2001 compliant |
Application Scenarios
The ceiling-mounted dry powder automatic fire extinguisher is suitable for a wide range of confined and high-risk environments where conventional systems are impractical. Typical protected locations include:
Industrial and Utility Facilities: Cable trenches, electrical distribution cabinets, substation rooms, transformer enclosures, and pump stations.
Warehousing and Logistics: Tobacco storage, logistics depots, and records archives.
Technology and Data: Server rooms, control rooms, and document protection areas.
Transportation Vehicles: Engine compartments of buses, trucks, marine vessels, aircraft hangars, and subway compartments.
Fire Types Covered
This device is effective against the following fire classes:
Class A: Fires involving ordinary combustibles such as wood, paper, fabric, rubber, and plastics.
Class B: Fires involving flammable liquids and melting solids, including gasoline, diesel, lubricants, animal/vegetable oils, and solvents.
Class C: Fires involving flammable gases such as LPG, natural gas, and acetylene.
Energized Electrical Fires: Fires in live electrical equipment, including switchgear, generator rooms, and cable ducts.
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