Isolators – Ex d Hazardous Area Zone 1 & Zone 2 Isolators ATEX Certified

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Ex d Isolators

Hazardous Area Isolators – Zone 1 & Zone 2 Flameproof Ex d Isolators


Zone 1 & Zone 2 Hazardous Area

Explosion Proof Electrical Isolation Equipment for

Potentially Explosive Atmospheres

Hazardous area Ex d isolators provide safe electrical isolation for low voltage power in Zone 1 & Zone 2 (gases) and Zone 21 & Zone 22 (dusts) explosive atmopsheres.

ATEX certified isolators with Ex d Explosion Proof Protection are available with current ratings 16A-250A housed in either cast iron or cast aluminium enclosures.

Enclosures manufactured by Craig & Derricott are supplied with cable entries which can be fitted with approved reducers to suit individual cable requirements. All load switching interiors are supplied as either 3P+N (switched neutral) or 6P and have AC23A ratings to BS EN 60947-3.

Auxiliary contacts are available for applications such as SCADA packages – enclosures are finished to RAL 7035 grey epoxy coating over etching primer – a range of fire rated/resistant isolators are also available.

See also | Isolators – Ex e Hazardous Area Zone 1 & Zone 2 Isolators ATEX Certified

Ex d Isolators


Ex d or “Flameproof” means that an isolator, enclosure or junction box is constructed and certified as Explosion Protected according to the “Flameproof” standard. Both Exe and Ex d isolators can be used on Zone 1 hazardous areas.

Hazardous Area Isolators ATEX Zone 1 Zone 2

Ex d Hazardous Area Isolators – ATEX Certified Zone 1 & Zone 2

Craig & Derricott Ex d isolators are housed in cast iron (16A-63A) or cast aluminium (80A-250A) enclosures.

Flameproof Ex d isolators can be customised to accommodate specific cable entry requirements.


Isolators are certified to the following hazardous area classification according to the ATEX Directive:

  • ATEX Ex II 2 GD Ex d IIB
  • ATEX Ex tD A21 IP6X

ATEX certified isolators for use in Cat II hazardous area Zones 1, 2, 21, and 22 with temperature ratings of T5 or T6.

Hazardous Area Certifications & ATEX Approvals

  • Certification Code: Ex d II 2 GD IIB T4, T5 or T6 
  • Certification Number: ITS 09 ATEX 16433X, ITS 09 ATEX 16436U
  • Certification Standard: EN 60079-0, EN 60079-1, EN 61241-0 & EN 61241-1
  • Operating Temperature: -20oC to +40oC
  • Ingress Protection: IP65

ISOLATORS Hazardous Area Zone 1, 2, 21 & 22

Ex d 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:

Current Rating (A)FormatCatalogue NumberEnclosure RefSupplied EntriesExternal EarthTemperature Class
163P+N+2E/BDGC0164EBZ1G213 X M20M6T6T5
253P+N+2E/BDGC0254EBZ1G214 X M20M6T6T5
206P+2E/BDGC0206EBZ1G212 X M25 + 1 X M20M6T6T5
403P+N+2E/BDGC0404EBZ1G222 X M25 + 1 X M20M8T6T5
406P+2E/BDGC0406EBZ1G222 X M25 + 1 X M20M8T6T5
633P+N+2E/BDGC0634EBZ1G222 X M25 + 1 X M20M8T6T5
803P+N+2E/BDGC0804EBZ1G243 X M32 + 1 X M20M8T6T6
1003P+N+2E/BDGC1004EBZ1G253 X M32 + 1 X M20M8T6T6
1253P+N+2E/BDGC1254EBZ1G253 X M40 + 1 X M20M8T6T6
1603P+N+2E/BDGC1604EBZ1G252 X M32 + 1 X M20M8T6T6
2003P+N+2E/BDGC2004EBZ1G283 X M50 + 1 X M20M10T6T6
2503P+N+2E/BDGC2504EBZ1G283 X M50 + 1 X M20M10T6T6

Other entry configurations available on request.

➡ See also: ATEX Plugs | ATEX Junction Boxes & Enclosures | Exd Enclosures Flameproof

➡ For complete technical data, format and hazardous area certification for Ex d isolators please see the product sections below.

Hazardous Area Isolators Zone 1 Zone 2 ATEX

Hazardous Area Ex d Isolators Zone 1 Zone 2 ATEX

Hazardous Area Explosion Protection Zone 1 Zone 2 ATEX

T&D UK & International: Project Suppliers To The Onshore & Offshore Oil, Gas, Petrochem & Hazardous Area Industries.