Costa Rica Class IIB Explosion-Proof Distribution Box Specifications

Class IIB explosion-proof distribution boxes feature 316 stainless steel enclosures, Ex d flameproof certification, and support a wide range of electrical components for hazardous areas.

Enclosure and Material

• Constructed from 316 stainless steel, providing excellent corrosion resistance and durability in harsh environments .
• Equipped with a specialized hinge structure to prevent damage to flameproof joints during opening and closing, extending service life .
• Powder-coated or brushed finishes are available depending on environmental requirements .

Certification and Flameproof Rating

• Certified Ex d IIB+H2, suitable for Zone 1 and Zone 2 hazardous areas with flammable gases .
• Temperature classes range from T6 to T4, depending on the model and application .
• Compliant with international standards such as IEC 60079-0, IEC 60079-1, and IEC 60079-31 .

Internal Components

• Can house a wide variety of electrical and control devices, including:
  • MCCBs, MCBs, AC contactors, thermal relays, intermediate relays, fuses, transformers, PLCs, soft starters, inverters, terminal blocks .
  • Meters: ammeters, voltmeters, power meters, tachometers, temperature control meters .
  • Control devices: switches, disconnecting switches, time relays, dual power transfer switches, solid-state relays, diode modules .
  • Specialized equipment: light-operated switches, optical fiber control boxes, magnet valves, analytical instruments, heaters, self-regulation trace heating cables, emergency devices for HID, fluorescent, and LED lighting .
  • Power and monitoring: UPS, batteries, current and voltage monitors, motor protection switches, integrated motor protectors .

Installation and Cable Entry

• Supports standard Mx 1.5 plug for cable entry; NPT plugs available on request .
• Cable glands are optional; DQM-II (Ex d) or DQM-III (Ex d) are recommended for flameproof integrity .
• Boxes can be combined and installed freely to save space and meet system requirements .

Optional Features

• Color-coded switch panels for differentiation and safety .
• Padlockable handles to prevent accidental operation .
• Rain covers or protective enclosures for outdoor installations .
• Customizable internal layout to meet client-specific requirements .

Applications

• Suitable for industrial, chemical, petroleum, offshore, and hazardous manufacturing environments where flammable gases or vapors are present .
• Can be used as distribution boxes, switch boxes, control boxes, terminal boxes, or motor starting boxes . These specifications ensure that Class IIB explosion-proof distribution boxes provide safe, reliable, and flexible solutions for hazardous electrical installations in Costa Rica and similar environments.