The circuit breakers currently used in the Powerpact 4 panelboards have either adjustable or fixed settings, see list below for further information.
Single pole
Single pole circuit breakers have fixed settings. TMD Trip units.
Two pole
Two pole circuit breakers have fixed settings TMD Trip units.
Three or Four pole up to 160A*
Three or four pole circuit breakers up to 160A have adjustable thermal overload settings (Ir) adjustable between 70 - 100% of their nominal rating (In). TMD Trip units.
Three or Four pole 200 & 250A*
Three or four pole circuit breakers rated at 200 & 250A have adjustable thermal overload settings (Ir) adjustable between 70 - 100% of their nominal rating (In) and adjustable magnetic settings adjustable between 5 to 10 x In. TMD Trip units.
Three or four pole 400 to 630A
These circuit breakers are fitted with electronic trip units and have adjustable overload settings between 40 - 100% of their nominal rating (In) and adjustable short circuit settings adjustable between 1.5 - 10 of the resultant overload setting.
Three or four pole 800 to 1600A
These circuit breakers are fitted with electronic trip units and have adjustable overload settings between 40 - 100% of their nominal rating (In) and adjustable short circuit settings adjustable between 1.5 - 10 of the resultant overload setting. They also have adjustable time delays for overload and short circuits.
Note: The three to four pole MCCBs rated from 160-250amps can also be equipped with Micrologic Trip units (electronic trip units) which have the same overload and short circuit adjustability of the 400-630amp rated devices.
Single pole
Single pole circuit breakers have fixed settings. TMD Trip units.
Two pole
Two pole circuit breakers have fixed settings TMD Trip units.
Three or Four pole up to 160A*
Three or four pole circuit breakers up to 160A have adjustable thermal overload settings (Ir) adjustable between 70 - 100% of their nominal rating (In). TMD Trip units.
Three or Four pole 200 & 250A*
Three or four pole circuit breakers rated at 200 & 250A have adjustable thermal overload settings (Ir) adjustable between 70 - 100% of their nominal rating (In) and adjustable magnetic settings adjustable between 5 to 10 x In. TMD Trip units.
Three or four pole 400 to 630A
These circuit breakers are fitted with electronic trip units and have adjustable overload settings between 40 - 100% of their nominal rating (In) and adjustable short circuit settings adjustable between 1.5 - 10 of the resultant overload setting.
Three or four pole 800 to 1600A
These circuit breakers are fitted with electronic trip units and have adjustable overload settings between 40 - 100% of their nominal rating (In) and adjustable short circuit settings adjustable between 1.5 - 10 of the resultant overload setting. They also have adjustable time delays for overload and short circuits.
Note: The three to four pole MCCBs rated from 160-250amps can also be equipped with Micrologic Trip units (electronic trip units) which have the same overload and short circuit adjustability of the 400-630amp rated devices.
Released for:Schneider Electric UK
