Explosion-proof switch boxes [zone 0, 1, 2, 21, 22]
HARDO manufactures customized explosion-proof switch boxes for zones 0, 1, 2 (for gases and vapors) and 21, 22 (for dust). You have full control over the selection of the type, size and mounting location of glands and cable terminals. We perform thermal analysis for each box and issue ATEX and IECEx certificates. Explosion-proof boxes can be made of aluminum, stainless steel or fiberglass-reinforced polyester.
Glass fibre reinforced polyester used to manufacture the HTBP series terminal boxes have been selected to grant the maximum protection against highly corrosive agents and maximum UV protection. Cover screws are made of stainless steel AISI 316L. Cover gasket is made of silicone. Internal mounting screws are made of non-corrosive material. Wide variety of enclosure sizes allows to accommodate all customers' requests.
Product features
Cable entries available on all sides.
Polyamide or metallic cable glands can be used.
IP 65/66 rating.
Certification
ATEX Certification.
IECEx Certification.
EU-Declaration of conformity.
HTBS series stainless steel terminal boxes are designed for extremely harsh industrial hazardous areas with features of high anti-corrosion, water ingress and dust protection. Our stainless steel terminal boxes are developed to meet strict requirements of the chemical, pharmaceutical and oil & gas industries. Applications include both, onshore and offshore installations. HTBS series stainless steel terminal boxes are available in a variety of sizes allowing for a vast and flexible arrangement of connecting terminals. Custom sizes are also available.
Product features
Stainless steel AISI 316L.
Hinged cover available.
Internal mounting plates are available.
Cable glands plates are available.
Certification
ATEX Certification.
IECEx Certification.
EU-Declaration of conformity.
HTB1A series aluminium enclosures are manufactured from a low-copper (less than 0,1%) aluminium alloys and feature an external polyester powder coating (RAL 7001) anti-loosening bolts and earthing screws made from stainless steel alloy AISI 316L. Aluminium enclosures are available in a variety of sizes allowing for a vast and flexible range of heights. Aluminium Ex Terminal Boxes have excellent corrosion resistance which makes them ideal for a variety of offshore and onshore applications. In addition, they can meet the requirements to corrosion protection for chemical, petrochemical and harsh environments.
Product features
Hinged cover available.
Internal mounting plates are available.
Cable glands plates are available.
Certification
ATEX Certification.
IECEx Certification.
EU-Declaration of conformity.
How explosion-proof switch boxes protect against ignition and explosion
Switch boxes intended for use in explosive atmospheres must meet a number of very stringent requirements to ensure that they do not cause the ignition of explosive atmospheres. The manufacturer is to use such types of protection that will guarantee their safe use in predetermined conditions. These safeguards are mainly designed to eliminate the risk of ignition as a result of:
- overheated surface
- electric sparks
- electrostatic discharges
- mechanical damage
Explosion-proof switch boxes - application
Explosion-proof switch boxes are specialized electrical devices designed for safe use in hazardous areas where flammable gases, vapors or dust may be present. Their main purpose is to ensure the safe distribution of electricity, the protection of circuits and the connection of various components of the electrical system in these hazardous environments. The design of these boxes must meet strict international norms and standards, such as ATEX and IECEx, which guarantees their explosion resistance and ability to prevent the potential ignition of explosive mixtures present in the environment. These boxes are equipped with solutions that guarantee that they will not be a source of ignition of explosive atmospheres.
Material design of explosion-proof switch boxes
The materials used in the manufacture of explosion-proof switch boxes, such as stainless steel, aluminum or fiberglass-reinforced polyester, are selected to maximize their resistance to corrosion, weather conditions and other external factors that can occur in harsh industrial environments. In summary, explosion-proof distribution boxes are a key component of infrastructure in explosion-prone areas, enabling safe and efficient management of electricity.