Isolators & Switch Disconnectors - Craig & Derricott "i Switch" Fire Rated Ranges

Isolators & Switch Disconnectors - Craig & Derricott "i Switch" Fire Rated Ranges

Craig & Derricott

 

 

 

Craig & Derricott

Fire Rated Isolators & Switch Disconnectors

'i-switch' Disconnectors

 

Craig & Derricott have been producing fire rated isolators and switch disconnectors for more than 20 years. Combining Craig & Derricott switching expertise with the specific requirements of the ventilation industry has led to the development of the 'High Temperature' range of isolating switch disconnectors suitable for the rail industry.

Excellent switching characteristics with high temperature environment contact stability makes this the ideal product range for fire rated isolator applications.

Pictured: Craig & Derricott Fire Rated Isolators & Switch Disconnectors

Craig & Derricott Fire Rated Isolators & Switch Disconnectors

The critical role performed by fire rated isolators and switch disconnectors is to maintain the power to vital equipment such as ventilation fans, allowing the safe evacuation of a business or public area in the event of a fire. Fire rated isolators or switch disconnectors are mounted local to the extraction fans and as an assembly it is essential that they comply with the stringent requirements of BS EN 12101 - 2003.

The complete range of Craig & Derricott isolators are housed in metal enclosures ensuring that there will be no distortion affecting the connecting cables and its supports at high temperatures.

2 pole, 3 pole, 4 pole and 6 pole fire rated Craig & Derricott isolators are available in either sheet steel or die-cast enclosures - isolators are available with following current ratings 20amp, 32amp, 63amp and 125amp.

Fire Rated (High Temperature) Isolators - 20A to 125A
Specification : Within BS EN 12101-3 : 2003 (Smoke and Heat Control Systems) which is the specification for powered smoke and heat exhaust ventilators, there are several classes of duty. These define specifically the temperature gradient and upper limit for the test as well as the time period over which the test will last :

  • F200 Fire Rating - 200 Degrees Celsius for 120 minutes
  • F300 Fire Rating - 300 Degrees Celsius for 60 minutes
  • F400 Fire Rating - 400 Degrees Celsius for 120 minutes

The specification calls for dynamic tests designed to check the performance of complete ventilation systems - the isolator is required to maintain the essential supply throughout the duration of the fire test.

Craig & Derricott Fire Rated Isolators - 20amp, 32amp, 63amp, 125amp 

  • Positive mode contacts
  • IP65 sealing protection
  • IPadlockable in the "Off" and "On" positions
  • Cable entries (20amp and 32amp 2 x M20 - 63amp and 125amp undrilled bottom gland plate)

Adobe

Isolators & Switch Disconnectors - Craig & Derricott "i Switch" Fire Rated

UK Time - GMT: