Switching device for electrical circuit-breaker, has semiconductor power module, whose storage unit stores bias voltage to control conduction of transistor during blocking of circulation current of supply circuit

摘要

#CMT# #/CMT# The device (300) has a supply circuit (308) providing a bias voltage (VP) on a bias voltage output (310) when a polarity permits current passage between a supply voltage input (309) and a common output (304) of semiconductor power modules (301, 305). Each module has a diode for blocking current circulation of the circuit when another opposite polarity is applied between the input and the common output. Each module has a storage unit (330) for storing the bias voltage to control conduction of a semiconductor power component (324) i.e. transistor, during blocking of the circulation current. #CMT# : #/CMT# An independent claim is also included for an electrical circuit-breaker comprising a terminal block. #CMT#USE : #/CMT# Switching device for being connected to a tripping device, which is utilized for tripping opening of an electrical circuit-breaker (claimed) in case of an electrical fault. #CMT#ADVANTAGE : #/CMT# The design of the switching device presents a reduced volume and permits easy implementation. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a circuit diagram of a switching device.'(Drawing includes non-English language text)' VP : Bias voltage 300 : Switching device 301, 305 : Semiconductor power modules 304 : Common output 308 : Supply circuit 309 : Supply voltage input 310 : Bias voltage output 324 : Semiconductor power component 330 : Storage unit.