Fire Rated Isolators | F400 Fire Resistant Switch Disconnectors

F400 Fire Resistant Switch Disconnectors

Fire Rated Isolators

The F400 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 400°C in the event of a fire. The isolators range from from 20A to 630A, 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.

F400 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

F400 Fire Resistant Isolators

The below table shows all variations of the F400 range of fire resistant isolators including the rating, format, switch type, enclosure material and colour as well as the IP rating.

Isolator Rating	Format	Switch Mount	Cat. No.	Encl. Size	Encl. Material	IP Rating	Encl. Colour
20A	2P	Lid mounted	FSDMR0202	A	Sheet Steel	IP65	Traffic Red Ral 3020
	3P		FSDMR0203
	3P+2E/B Aux		FSDMR0203EB
	3P+NL		FSDMR0203NL
	4P		FSDMR0204
	6P		FSDMR0206
	6P+2E/B Aux		FSDMR0206EB
25A	2P	Lid mounted	FSDMR0252	A	Sheet Steel	IP65	Traffic Red Ral 3020
	3P		FSDMR0253
	4P		FSDMR0254
20A	2P	Lid mounted	FSDDR0202	E	Die-CastAluminium	IP65	Traffic Red Ral 3020
	3P		FSDDR0203
	3P+2E/B Aux		FSDDR0203EB
	3P+NL		FSDDR0203NL
	4P		FSDDR0204
	6P		FSDDR0206	B
	6P+2E/B Aux		FSDDR0206EB
32A	2P	Lid mounted	FSDDR0322	B	Die-CastAluminium	IP65	Traffic Red Ral 3020
	3P		FSDDR0323
	3P+2E/B Aux		FSDDR0323EB
	3P+NL		FSDDR0323NL
	4P		FSDDR0324
	6P		FSDDR0326
	6P+2E/B Aux		FSDDR0326EB
40A	2P	Lid mounted	FSDDR0402	B	Die-CastAluminium	IP65	Traffic Red Ral 3020
	3P		FSDDR0403
	4P		FSDDR0404
63A	2P	Base mounted	FSDMR0632	C	Sheet Steel	IP65	Traffic Red Ral 3020
	3P		FSDMR0633
	3P+2E/B Aux		FSDMR0633EB
	3P+NL		FSDMR0633NL
	4P		FSDMR0634
	6P		FSDMR0636
	6P+2E/B Aux		FSDMR0636EB

Rating	Format	Switch Mount	Cat. No.	Encl. Size	Encl. Material	IP Rating	Encl. Colour
80A	2P	Base mounted	FSDMR0802	3A	Sheet Steel	IP65	Traffic Red Ral 3020
	3P		FSDMR0803
	3P+NL		FSDMR0803NL
	4P		FSDMR0804
	3P+2E/B Aux		FSDMR0803EB	D
	6P		FSDMR0806
	6P+2E/B Aux		FSDMR0806EB
125A	2P	Base mounted	FSDMR01252	D	Sheet Steel	IP65	Traffic Red Ral 3020
	3P		FSDMR01253
	3P+NL		FSDMR01253NL
	3P+2E/B Aux		FSDMR01253EB
	4P		FSDMR01254
	6P		FSDMR01256
	6P+2E/B Aux		FSDMR01256EB
160A	3P	Base mounted	FSDMR01603	5	Sheet Steel	IP65	Traffic Red Ral 3020
	3P+NL		FSDMR01603NL
	4P		FSDMR01604
	6P		FSDMR01606	7
200A	3P	Base mounted	FSDMR02003	5	Sheet Steel	IP65	Traffic Red Ral 3020
	3P+NL		FSDMR02003NL
	4P		FSDMR02004
	6P		FSDMR02006	7
250A	3P	Base mounted	FSDMR02503	5	Sheet Steel	IP65	Traffic Red Ral 3020
	3P+NL		FSDMR02503NL
	4P		FSDMR02504
	6P		FSDMR02506	7
315A	3P	Base mounted	FSDMR03153	6	Sheet Steel	IP65	Traffic Red Ral 3020
	3P+NL		FSDMR03153NL
	4P		FSDMR03154
	6P		FSDMR03156	9
400A	3P	Base mounted	FSDMR04003	6	Sheet Steel	IP65	Traffic Red Ral 3020
	3P+NL		FSDMR04003NL
	4P		FSDMR04004
	6P		FSDMR04006	9
630A	3P	Base mounted	FSDMR06303	8	Sheet Steel	IP65	Traffic Red Ral 3020
	3P+NL		FSDMR06303NL
	4P		FSDMR06304
	6P		FSDMR06306	9

Fire Rated Isolators – F400 Enclosed Switch-Disconnectors

Fire Resistant Isolators | F400 Dimensions

Fire Rated – F400 Enclosed Switch-Disconnectors

Dimensions	Enclosure Size
Dimensions	C	3A	D	5	6	7	8	9
Height (H)	250	350	480	550	750	750	900	900
Width (W)	250	300	240	450	450	600	600	600
Depth (D)	165	175	238	250	275	300	300	400
Vertical Fixing CRS (A)	188	270	400	470	670	670	820	820
Horizontal Fixing CRS (B)	188	220	160	370	370	520	520	520
Fixing Hole Size (Ø)	8.5	8.5	8.5	8.5	8.5	8.5	10.5	10.5
Foot Projection (E)	35	35	35	35	35	35	35	35
Foot Width (F)	58	58	58	58	58	58	58	58
Hole Centres (G)	13	13	13	13	13	13	13	13
Hole Centres (J)	58	58	58	58	58	58	58	58
Fixing Hole Size (ØØ)	8.5	8.5	8.5	8.5	8.5	8.5	10.5	10.5