Fire Rated Isolators | F300 Fire Resistant Isolators | Switch Disconnectors

Fire Rated Isolators | F300 Fire Resistant Switch Disconnectors

Fire Rated Isolators | F300 Fire Resistant Switch Disconnectors

F300 Fire Resistant Switch Disconnectors

Fire Rated Isolators

The F300 by Craig & Derricott is a range of fire rated isolators designed for installations where the LV electrical supply must be maintained for 2 hours at 300°C in the event of a fire. The isolators range from from 20A to 800A, these electrical isolation units are supplied in IP66/65 die-cast aluminium or IP65 sheet steel enclosures.

Fire rated isolators (switch disconnectors) are installed throughout industrial, building services and HVAC (ventilation fans) projects providing excellent switching ability even under fire conditions.

F300 fire resistant isolators (often referred to as 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.

BS EN 12101-3 Standard | Smoke & Heat Control Systems. Specification for powered smoke and heat control ventilators (Fans).

All isolators are supplied in a Traffic Red (RAL 3020) polyester powder coat finish, with padlocking in both ‘Off’ and ‘On’ positions.

Isolator Options

‘N’ = switched neutral (Early make, late break) | ‘NL’ = Unswitched neutral | ‘EB = Early break auxiliary contacts
‘T’= Increased terminal capacity

F300 Fire Resistant IsolatorsF300

The below table shows all variations of the F300 range of fire resistant isolators including the rating, format, switch type, enclosure material and colour as well as the IP rating.

Isolator RatingFormatSwitch MountC&D Part NumberEncl. SizeEncl. MaterialIP RatingEncl. Colour
20A2PLid mountedF3SDR0202ASheet SteelIP65Traffic Red Ral 3020
3PF3SDR0203
3P+2E/B AuxF3SDR0203EB
3P+NLF3SDR0203NL
4PF3SDR0204
6PF3SDR0206
6P+2E/B AuxF3SDR0206EB
25A2PLid mountedF3SDR0252ASheet SteelIP65Traffic Red Ral 3020
3PF3SDR0253
4PF3SDR0254
20A2PLid mountedF3DDR0202EDie-CastAluminiumIP65Traffic Red Ral 3020
3PF3DDR0203
3P+2E/B AuxF3DDR0203EB
3P+NLF3DDR0203NL
4PF3DDR0204
6PF3DDR0206B
6P+2E/B AuxF3DDR0206EB
32A2PLid mountedF3DDR0322BDie-CastAluminiumIP65Traffic Red Ral 3020
3PF3DDR0323
3P+2E/B AuxF3DDR0323EB
3P+NLF3DDR0323NL
4PF3DDR0324
6PF3DDR0326
6P+2E/B AuxF3DDR0326EB
40A2PLid mountedF3DDR0402BDie-CastAluminiumIP65Traffic Red Ral 3020
3PF3DDR0403
4PF3DDR0404
63A2PBase mountedF3SDR0632CSheet SteelIP65Traffic Red Ral 3020
3PF3SDR0633
3P+2E/B AuxF3SDR0633EB
3P+NLF3SDR0633NL
4PF3SDR0634
6PF3SDR0636
6P+2E/B AuxF3SDR0636EB

‘N’  = switched neutral (Early make, late break)  |  ‘NL’ = Unswitched neutral  |  ‘EB = Early break auxiliary contacts

RatingFormatSwitch MountC&D Part NumberEncl. SizeEncl. MaterialIP RatingEncl. Colour
80A2PBase mountedF3SDR08023ASheet SteelIP65Traffic Red Ral 3020
3PF3SDR0803
3P+NLF3SDR0803NL
4PF3SDR0804
3P+2E/B AuxF3SDR0803EBD
6PF3SDR0806
6P+2E/B AuxF3SDR0806EB
125A2PBase mountedF3SDR01252DSheet SteelIP65Traffic Red Ral 3020
3PF3SDR01253
3P+NLF3SDR01253NL
3P+2E/B AuxF3SDR01253EB
4PF3SDR01254
6PF3SDR01256
6P+2E/B AuxF3SDR01256EB
160A3PBase mountedF3SDR016035Sheet SteelIP65Traffic Red Ral 3020
3P+NLF3SDR01603NL
4PF3SDR01604
6PF3SDR016067
200A3PBase mountedF3SDR020035Sheet SteelIP65Traffic Red Ral 3020
3P+NLF3SDR02003NL
4PF3SDR02004
6PF3SDR020067
250A3PBase mountedF3SDR025035Sheet SteelIP65Traffic Red Ral 3020
3P+NLF3SDR02503NL
4PF3SDR02504
6PF3SDR025067
315A3PBase mountedF3SDR031536Sheet SteelIP65Traffic Red Ral 3020
3P+NLF3SDR03153NL
4PF3SDR03154
6PF3SDR031569
400A3PBase mountedF3SDR040036Sheet SteelIP65Traffic Red Ral 3020
3P+NLF3SDR04003NL
4PF3SDR04004
6PF3SDR040069
630A3PBase mountedF3SDR063038Sheet SteelIP65Traffic Red Ral 3020
3P+NLF3SDR06303NL
4PF3SDR06304
6PF3SDR063069
800A3PBase mountedF3SDR080038Sheet SteelIP65Traffic Red Ral 3020
3P+NLF3SDR08003NL
4PF3SDR08004
6PF3SDR080069

Fire Rated Isolators – F300 Enclosed Switch-Disconnectors

Fire Resistant Isolators | F300 Dimensions

Fire Resistant Isolators | F300 Dimensions

Fire Rated - F300 Enclosed Switch-Disconnectors

Fire Rated – F300 Enclosed Switch-Disconnectors

DimensionsEnclosure Size
C3AD56789
Height (H)250350480550750750900900
Width (W)250300240450450600600600
Depth (D)165175238250275300300400
Vertical Fixing CRS (A)188270400470670670820820
Horizontal Fixing CRS (B)188220160370370520520520
Fixing Hole Size (Ø)8.58.58.58.58.58.510.510.5
Foot Projection (E)3535353535353535
Foot Width (F)5858585858585858
Hole Centres (G)1313131313131313
Hole Centres (J)5858585858585858
Fixing Hole Size (ØØ)8.58.58.58.58.58.510.510.5

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