An electromagnetic starting distribution box is an explosion-proof power distribution unit designed to safely start and control motors in hazardous industrial environments.

Overview

Electromagnetic starting distribution boxes combine motor starting and power distribution functions in a single, robust enclosure suitable for explosive gas and dust environments (Zones 1, 2, 21, 22) and corrosive industrial settings . They are widely used in chemical plants, oil refineries, mining, and other high-risk areas where safety and reliability are critical. These boxes integrate electromagnetic starters, circuit breakers, and thermal relays to control motor operation while protecting circuits from overloads and short circuits .

Key Features

• Explosion-proof and corrosion-resistant design: Typically made from cast aluminum alloy with surface spraying or electrostatic coating, providing durability in harsh chemical or saltwater environments .
• High-current capacity: Main circuits can support up to 400A, with branch circuits ranging from 6A to 225A, depending on the model .
• Modular and customizable: Circuit configurations can be tailored with IC65, CM3, NSX, GSM starters, and modular wiring allows plug-and-play sockets or combined circuits .
• Multi-hazard compliance: Certified to Ex db eb IIC T4/T6 Gb and Ex tb IIIC T80°C Db, meeting GB, IEC, and EN standards for gas and dust protection .
• Flexible installation: Options include wall-mounted, mobile, or vertical setups, with G2"–G4" entry ports for cable or steel conduit routing .
• Maintenance-friendly: Tool-free access and modular design simplify upgrades and repairs .

Applications

• Hazardous industrial zones: Suitable for explosive gas (Zone 1/2) and dust-prone areas (Zone 21/22) .
• Motor control: Provides safe starting, stopping, and protection for industrial motors.
• Corrosive environments: Anti-corrosion coatings and robust enclosures ensure long-term reliability in chemical or marine settings .

Popular Models

• SEQD Series: Explosion-proof, customizable motor starters, high-current capacity, corrosion-resistant, suitable for Zones 1/2 & 21/22 .
• CE93 Series: Main switch up to 180A, branch circuits 6–95A, flameproof and explosion-proof .
• BX2G52 Series: Composite type with flameproof main cavity, modular circuits, AC400V/380V/220V, supports 400A/250A/200A .
• BXQ8050: Explosion-proof, anti-corrosion, optimized for durability and industrial reliability .

These boxes are essential for safe motor operation in hazardous environments, combining power distribution, motor control, and explosion-proof protection in a single, reliable unit.