Positive Pressure Supply Fan Control Box

Our Positive Pressure Supply Fan Control Box (ZY-FJ series) is a dedicated control solution for fire positive pressure supply systems requiring reliable fan control for stairwells, elevator lobbies, and refuge floors. Designed to maintain pressurized air flow in evacuation routes during fire emergencies, this box provides fan motor control, circuit protection, fire alarm interface, and pressure status monitoring in a compact enclosure. The fire linkage function activates the positive pressure fan automatically upon fire alarm, ensuring that stairwells and lobbies remain smoke-free for safe evacuation. The control box supports both single-speed and variable-speed fan configurations, with pressure sensor input options for maintaining target pressurization levels. Built with robust steel enclosures and control components from Schneider, Siemens, Chint, and Delixi, this control box ensures reliable positive pressure ventilation for high-rise buildings, commercial complexes, and public facilities. The ZY-FJ series format offers a proven, code-compliant structure tailored to positive pressure supply requirements, making this box ideal for stairwell pressurization, elevator lobby smoke prevention, and fire evacuation systems.

Yuanzhuo Electrical Equipment manufactures positive pressure supply fan control boxes strictly to customer drawings and fire code specifications. Our 12,000 m² facility with five automated production lines and an annual capacity of 10,000 units supports both small and large orders. Each box undergoes 100% powered testing, including fire linkage simulation and pressure control verification, before wooden-crate packaging. We support paid samples with a typical development cycle of about one week, and standard delivery of three weeks to one month.

Customization includes motor power rating, control method (single-speed, variable-speed/VFD), fire linkage input configuration, pressure sensor interface (for target pressure maintenance), manual/auto selector type, overload and protection settings, enclosure dimensions, protection grade, installation type, surface color, and customer branding. We manufacture strictly to confirmed customer drawings and fire code specifications.

Each box is wrapped in protective film and packed in a wooden crate with internal anti-collision padding. We support FOB to a designated Chinese port and EXW. Payment: 40% deposit, 80% after pre-shipment inspection, full balance at the designated Chinese port. Currencies: USD, EUR, RMB.