REPLACEABLE SET OF DEVICES, PARTICULARLY FOR OVERVOLTAGE PROTECTION Russian patent published in 2009 - IPC H01T4/06 

FIELD: electrical engineering.

SUBSTANCE: invention relates to replaceable set of devices intended, in particular, for protection from over voltages. Set of devices includes low cap part and one or several replaceable modules containing protection elements from over voltage. The above mentioned set of devices includes also contact elements and mating contact parts located in the lower part and replaceable module. There are also mechanical fixing and locking elements interacting between replaceable module and low cap part. Besides, fixing and locking function can be deleted when replaceable module needs replacement. The replaceable module includes carrying unit with base. There are several large square contact elements and low surface in the base. The low surface is represented in the form of hollow. Support edges, support surfaces and/or support pins come out downwards from the above hollow in the direction of low cap part. The carrying unit is surrounded by cover and provided with hinged surface on, at least, one side. The hinged surface transfers into the clamping plate to actuate fixing insert with fixing projections or fixing thick parts.

EFFECT: ensuring of significant pulse current without burning and wear as well as reliable fixing of replaceable module under significant surge currents; possibility of immediate module disconnection and removal without auxiliary devices and tools.

23 cl, 6 dwg