Fire Rated Isolators | Fire Resistant Switch Disconnectors

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Fire Rated Isolators | Resistant to Fire up to 400 Degrees Celsius 120 Minutes

Fire Rated Isolators | Resistant to Fire up to 400 Degrees Celsius 120 Minutes

Fire Rated Isolators

Fire Resistant Isolators | Switch Disconnectors

Craig & Derricott offer one of the most extensive range of isolators with fire rating and resistance to fire up to 400 Degrees Celsius 120 Minutes. The fire resistant isolators are installed throughout industrial, building services and HVAC (ventilation fans) projects providing excellent switching ability even under fire conditions – offering products suitable for F200, F300 & F400 fire specification applications.

The fire resistant isolators (switch disconnectors) available in 20A to 800A maintain electrical power to vital equipment allowing safe evacuation of public areas in the event of a fire. These switch-disconnectors are mounted near to the extraction fan for isolation purposes and have been tested in conjunction with the fan equipment to meet the strict thermal requirements of BS EN 12101-3.

Within BS EN 12101-3 (smoke and heat controls) there are different classes of duty which define a specific temperature gradient, upper temperature limit and time period.

  • F200 Isolators can withstand 200°C for 2 hours
  • F300 Isolators can withstand 300°C for 2 hours
  • F400 Isolators can withstand 400°C for 2 hours

➡ Related Products | Fire Rated Resistant Junction Boxes Enclosures | Fire Rated Resistant Plugs


F200 Fire Rated Enclosed Switchgear

Ranging from 20A to 200A, these fire rated isolators (disconnectors) are supplied in IP66/65 die-cast aluminium or IP65 sheet steel enclosures. Craig & Derricott’s F200 isolators will withstand 200°C fire for 120 minutes.

Fire Rated Isolators | F200 Fire Resistant Switch Disconnectors

Fire Rated Isolators | F200 Fire Resistant Switch Disconnectors

F300 Fire Rated Enclosed Switchgear

Ranging from 20A to 800A, these fire rated isolators (disconnectors) supplied in IP65 die-cast aluminium or sheet steel enclosures. The interior switches are constructed from a high temperature grade thermoset material, designed specifically for installations where the supply must be maintained for 60 mins at 300°C. Craig & Derricott’s F300 isolators will withstand 300°C fire for 120 minutes.

Fire Rated Isolators | F300 Fire Resistant Switch Disconnectors

Fire Rated Isolators | F300 Fire Resistant Switch Disconnectors

F400 Fire Rated Enclosed Switchgear

Ranging from 20A to 630A, fire rated isolators (disconnectors) supplied in IP65 die-cast aluminium or sheet steel enclosures. Units rated 63A and above are fitted with highly durable anodised aluminium metal handles. All enclosures come standard with padlocking in both ‘Off’ and ‘On’. The interior switches are constructed from a high temperature grade thermoset material, designed specifically for installations where the supply must be maintained for 60 mins at 400°C. Craig & Derricott’s F400 isolators will withstand 400°C fire for 120 minutes.

Fire Rated Isolators | F400 Fire Resistant Switch Disconnectors

Fire Rated Isolators | F400 Fire Resistant Switch Disconnectors

All Craig & Derricott Fire Rated isolators come standard in a Traffic Red (RAL 3020) polyester powder coat finish, with padlocking in both ‘Off’ and ‘On’ positions.

➡ Stainless Steel Grade 316L enclosures are available on request for 63A – 630A.

Fire Rated Isolators

Fire Rated Isolators | FP200 | FP300 | FP400 for Fire Resistant Building Services Applications