ATEX Isolators | Hazardous Area Zone 1 & Zone 2 Isolators ATEX Certified

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Hazardous Area Isolators ATEX Zone 1 Zone 2

Hazardous Area Isolators ATEX Zone 1 Zone 2

ATEX Isolators

Thorne & Derrick distribute isolators for safe installation in Zone 1 & Zone 2 hazardous areas with ATEX certification and explosion protection to both Ex d (flameproof) and Ex e (increased safety) applications.

Craig & Derricott isolators protect and maintain low voltage power distribution in hazardous area locations.

Hazardous Area Isolators

  • Ex e Hazardous Area Zone 1 & Zone 2 Increased Safety Isolators ATEX Certified
  • Ex d Hazardous Area Zone 1 & Zone 2 Flameproof Isolators ATEX Certified

Hazardous area isolators with current ratings 25A, 40A, 80A and 180A in either 3 or 4 pole versions complete with 1 N/O (Early Break) and 1 N/C (Late Make) auxiliary contacts.

Hazardous Area isolators – Zone 1, 2, 21 & 22

Ex e Protection – Selection Table

The following selection table enables the specification of Isolators with ATEX Certification suitable for installation in hazardous area Zone 1 & Zone 2 including:

  • Ex e Increased Safety Isolators
  • Ex d Flameproof Isolators

Should you require any customer support or technical advice to select the correct isolator please do not hesitate to contact our Sales team:

Isolator Current Rating (A)FormatHandle ColourCraig & Derricott Catalogue NumberOptional Brass Earthing Plate Catalogue NumberEnclosure Size



A Disconnector is a mechanical switch which in the “Open” position, complies with requirements specified for the isolating function. A Disconnector or Isolator is an off-load device and marked “Isolate elsewhere before opening” with an AC20/DC20 utilisation category.

A Switch is a mechanical switcing device capable of making, carrying or breaking current under normal circuit conditions, including specified operating overload conditions. A Switch can also carry, for a specified time, currents under specified abnormal circuit conditions, such as those of a short circuit (utilisation category AC32A duty).

A Switch-Disconnector meets both of these criteria and with a Red/Yellow padlockable handle may also be called a Safety Isolator.

➡ For complete technical details, hazardous area certifications and ordering details about isolators for both Ex d flameproof and Ex e increased safety applications please see the product sections below.

Explosion Protection & Proof Hazardous Area Electrical Equipment

Thorne & Derrick International, based in the UK, are stockists and suppliers of an extensive range of Hazardous Area Electrical Equipment – this includes explosion proof (Ex e) and flameproof (Ex d) products certified by ATEX for use in hazardous areas and explosive atmospheres:

Hazardous Area Zone 1 Zone 2 ATEX Sounders

Hazardous Area Equipment & Explosion Protection Distributors | ATEX Sounders