An AT Fire Protection Distribution Box is a specialized electrical enclosure designed to maintain safe operation of electrical circuits during fire events, with fire resistance ratings from 30 to 90 minutes.

Overview

The AT Fire Protection Distribution Box is engineered to connect, branch, and protect electrical cables while ensuring continuous operation under fire conditions . These boxes are critical in buildings, tunnels, and industrial facilities where maintaining power to emergency systems like lighting, smoke extraction, and alarms is essential .

Fire Resistance and Standards

These distribution boxes are tested and certified according to DIN 4102 standards, with classifications such as F30/F90, I30/I90, and E30/E90, indicating fire resistance durations of 30 to 90 minutes for internal and external fire protection . The enclosures are designed to prevent fire spread and maintain electrical functionality during emergencies, ensuring compliance with statutory fire safety and VDE electrical standards .

Construction and Features

• Materials: High-quality, heat- and fire-resistant materials from reputable manufacturers .
• Ventilation: Channels in the rear wall allow airflow, which automatically closes in case of fire to prevent flame propagation .
• Mounting: Surface-mounted or integrated into sub-distribution boards, depending on installation requirements .
• Locking and Access: Equipped with secure doors and locks to protect internal components while allowing maintenance access .
• Electrical Safety: Designed to maintain circuit integrity and prevent short circuits or failures during fire events .

Applications

AT Fire Protection Distribution Boxes are widely used in:

• Commercial and industrial buildings to protect emergency power circuits.
• Tunnels and transportation infrastructure for lighting and smoke extraction systems.
• Critical facilities such as hospitals, data centers, and control rooms where uninterrupted power is essential .

Key Benefits

• Ensures continuous operation of critical electrical systems during fire.
• Reduces risk of fire propagation through electrical installations.
• Complies with international fire safety and electrical standards, providing legal and operational assurance.
• Durable and reliable, suitable for long-term industrial and commercial use . In summary, the AT Fire Protection Distribution Box is a robust, fire-rated electrical enclosure that safeguards both people and property by maintaining essential electrical functions during fire emergencies.