British General 6A SP Type B MCB (61373)

Hi Trevtreva, That is the technical specification of the MCB, as per the relevant standards, Type B (should really be B _Curve_) refers to the response times for given fault levels graph and is the most commonly used curve for domestic properties, Magnetic Operating confirms that it is not using the older Mechanical Operating style of mechanism, and 3 to 5 times In is referring to the " i " measurement of incoming current.

Hi Kintara, We are only aware of one standard DIN rail size (35 mm +/- 0.5mm), which this and all of the other BG Circuit Protection range devices are designed to fit.

Hi, thank you for your product enquiry. British General have not had any rival manufacturers' circuit protection enclosures or devices in for comparison testing, so we cannot say whether our devices would be compatible with anyone else's consumer units or not.