Universal change-over switch

Abstract

A universal change-over switch includes a main shaft and a contact module connected to the main shaft, the contact module includes a contact base and a cam module disposed in the contact base to cooperate with the main shaft, multiple sets of contact mechanisms linked with the cam module are arranged around the cam module, the supports of the contact mechanisms can be movably arranged in the contact base to cooperate with the cam module, moving contacts are arranged on the supports to cooperate with fixed contacts, indication rods are arranged on the supports, the contact base is provided withindication holes cooperated with the indication rods, the supports fixing the moving contacts are provided with the indication rods extended out of the contact base with no need for addition of extramechanisms, the structures of the supports themselves can be directly used to visually indicate the on-off states in the contact module, the indication holes on the contact base are cooperated with the indication rods, so that the guide and location effects can be supplied to the supports when the contact mechanisms are assembled, the assembling difficulty is reduced, and the assembling efficiency is improved.

Description

technical field [0001] The invention relates to the field of low-voltage electrical appliances, in particular to a universal transfer switch. Background technique [0002] The universal transfer switch is a multi-level, multi-circuit control master electrical appliance, which is mainly used for the conversion of various control circuits, the remote control and conversion of power distribution device circuits, the commutation measurement control of voltmeters and ammeters, and can also be used for Directly control small-capacity motors, etc., with the advantages of multi-contact, multi-position, flexible operation, and convenient installation. [0003] However, the existing universal transfer switch cannot indicate the internal on-off situation, and the on-off situation in the switch cannot be observed from the outside. It is necessary to consult the drawings, instructions, or use tools such as multimeters and buzzers to perform on-site measurements before wiring. Due to the...

AI Technical Summary

Problems solved by technology

[0003] However, the existing universal transfer switch cannot indicate the internal on-off situation, and the on-off situation in the switch cannot be observed from the outside. It is necessary to consult the drawings, instructions, or use tools such as multimeters and buzzers to perform on-site measurements before wiring. Due to the particularity of the transfer switch, few manufacturers can provide on-off drawings of all products, which seriously affects the installation efficiency. If the wiring is wrong, it will leave a safety hazard to customers.

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