To provide a terminal structure of a circuit breaker having a selection type terminal device, in which a measurement work of a power supply voltage for a plurality of circuit breakers can be easily performed from the front face side of the circuit breakers, and an operator rarely misidentifies a connection bus bar or a supply voltage so that an electrical failure rarely occurs.
A terminal structure of a circuit breaker includes: a movable power supply side terminal that is one of power supply side terminals, in which a connection position to bus bars is variable, and that is connected to a predetermined bus bar selected from the bus bars of respective phases; a voltage display portion that previously displays a plurality of power supply voltages that can be applied; communication holes provided from a front face side to the movable power supply side terminal; and a concealing plate that conceals a display of a power supply voltage that is not actually applied and a communication hole to a terminal to which a bus bar is not connected, with a movement of the connection position of the movable power supply side terminal. Thus a display of a voltage actually applied, and a communication hole to a terminal to which a bus bar is connected, are exposed to be visible from the outside.
IMAGAWA MAKOTO
HANYU TOSEI
SHINADA KUNIAKI
YOSHIKAWA MAKOTO
BABA TAKASHI
MAIKUMA KENZO
TANAKA YASUYUKI
OKANO NAOKI
AIHARA SHIGERU
KAMATA TAKESHI
HIGASHIDA HIRONORI
| JP2011009113A | 2011-01-13 | |||
| JPH11329201A | 1999-11-30 |
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