There are two categories of LV industrial switchgear, A and B, according to IEC 60947-2
· Those of category A, for which there is no deliberate delay in the operation of the “instantaneous” short-circuit magnetic
tripping device, are generally moulded-case type circuit-breakers, and
· Those of category B for which, in order to discriminate with other circuit-breakers on a time basis, it is possible to delay
the tripping of the CB, where the fault-current level is lower than that of the short-time withstand current rating (Icw) of the.
· Those of category A, for which there is no deliberate delay in the operation of the “instantaneous” short-circuit magnetic
tripping device, are generally moulded-case type circuit-breakers, and
· Those of category B for which, in order to discriminate with other circuit-breakers on a time basis, it is possible to delay
the tripping of the CB, where the fault-current level is lower than that of the short-time withstand current rating (Icw) of the.
Released for: Schneider Electric India
Need help?
Product Selector
Quickly and easily find the right products and accessories for your applications.
Get a Quote
Start your sales enquiry online and an expert will connect with you.
Where to buy?
Easily find the nearest Schneider Electric distributor in your location.
Help Centre
Find support resources for all your needs, in one place.
