Fire Rated Isolators

Technical Data Sheet

Specific Control Functions

Craig & Derricott has been producing switch disconnectors for more than 30 years. Combining there switching expertise with the specific requirements of the ventilation industry, led to the development of there "High Temperature Isolation" range. Excellent switching characteristics with high temperature environment contact stability makes this the ideal product range.

The critical role these switches perform is to maintain the power to the ventilation equipment, allowing safe evacuation of a business or public area. Often, these devices are mounted local to the extraction fans. As an assembly, it is essential they comply with the stringent thermal requirements of BS EN 12101 - 2003.

The complete range are housed in metal enclosures, the user can therefore be assured that there will be no distortion affecting the connecting cables and its support.

EN12101-3 Certificate

Tested In Accordance To The European Standard EN 12101-3 Standard

BS EN 12101-3 : 2003 specification calls for dynamic tests designed to check the performance of complete ventilation systems - the associated fire rating and fire performance of the electrical isolator is required to maintain the essential supply throughout the duration of the fire test. Fire rated isolators (F400 class) are available in 20amp, 32amp, 63amp, 125amp, 160amp and 200amp current ratings.

Design Features

Positive mode contacts
P65 ingress protection rating

Padlockable in the "Off" and "On" positions
F400 fire rated isolators (switch disconnectors)

Product Finishes

Traffic red color power coat finish

Smoke Control Extraction Systems

Suggested Applications

Catalogue References

Rating	Format	Assembly Form	Catalogue No. (Finished Red)	Temperature Classification	Enclosure Size
20A	2P	Lid Mounted In sheet Steel enclosure	FSDMR0202	F400	A
	3P		FSDMR0203
	3P+2EB Aux		FSDMR0203EB
	3P + N		FSDMR0203N
	4P		FSDMR0204
	6P		FSDMR0206
32A	2P	Lid Mounted In sheet Steel enclosure	FSDDR0322	F400	B
	3P		FSDDR0323
	3P+2EB Aux		FSDDR0323EB
	3P+N		FSDDR0323N
	4P		FSDDR0324
	6P		FSDDR0326
	6P+2EB Aux		FSDDR0326EB
63A	2P	Base Mounted In sheet Steel enclosure	FSDMR0632	F400	C
	3P		FSDMR0633
	3P+2EB Aux		FSDMR0633EB
	3P+N		FSDMR0633N
	4P		FSDMR0634
	6P		FSDMR0636
	6P+2EB Aux		FSDMR0636EB
125A	2P		RS1BD11/HPHT	F400	D
	3P		RS1BT21/HPHT
	3P+2EB Aux		RS1BT31/2EB/HPHT
	3P+N		RS1BT21/HPHT/NL
	4P		RS1BQ21/HPHT
	6P		RS1BY31/HPHT
	6P+2EB Aux		RS1BY4½EB/HPHT
160A	3P		FSDMR1603	F300	4*
	4P		FSDMR1604		4*
	6P		FSDMR1606		5*
	6P+2EB Aux		FSDMR1606EB		5*
200A	3P		FSDMR2003	F300	5*
	4P		FSDMR2004		5*
	6P		FSDMR2006		7*

Specifications

According to BS EN 12101-3 (Smoke and Heat Control Systems), the specification which covers powered smoke and heat exhaust ventilators, there are several classes of fire performance duty. These fire ratings define specifically the temperature gradient and upper limit for the fire test as well as the time period over which the test will last.

Technical Detail for Specifications

Model Dynamics and Dimensions

Application	Sym.	Unit	Category	20A	32A	63A	125A
Enclosure material/size (See page 2 - Technical Data Sheet				Sheet Steel (A)	Die-Cast (B)	Sheet steel (C)	Sheet steel (D)
Rated thermal current	Ith	A		20.0	32.0	63.0	125.0
Rated Insulation voltage	Ui	V		690	690	690	690
Rated operational current (AC)	Ie	A	400/415V - AC21A	20.0	32.0	63.0	125.0
			400/415 - AC22A	20.0	32.0	63.0	125
			400/415V - AC23A	20.0	32.0	0	100.0
Rated operational power (AC)		kW	3 x 400/415V - AC23A	10.0	15.0	18.6	55.0 (AC23B)
Conditional short circuit current	Icc	kA		50.0*	50.0*	50.0*	50.0*
Minimum mechanical endurance			Cycles	>0.5 x 10⁶	>0.5 x 10⁶	>0.5 x 10⁶	>0.5 x 10⁶
Connecting capacity			Terminal type	Solderless	Solderless	Solderless	Solderless
		mm²	Flexible cable	6.0	6	25.0	50.0
		mm²	Stranded cable	6.0	6.0	25.0	50.0