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JP4395009B2 |
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JP4390102B2 |
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JP4371307B2 |
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JP4369417B2 |
Three-pole circuit-breakers incorporating residual current protection is provided of which not only an earth leakage detecting function but also the function of an earth leakage current test device can be made to work normally whichever ...
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JP4369033B2 |
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JP4364442B2 |
The invention concerns a protection relay, in particular of the thermal type, recessed relative to its front face (24), a recess acting as through passage for interconnection of the conductors (C) between the terminals of the relay contr...
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JP2009266462A |
To provide a compact detection unit in which a breaker, a CT, and a ZCT are efficiently arranged on a terminal table body, and an automatic input device using the detection unit.The detection unit 2 has at least two electric paths formed...
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JP2009259440A |
To provide a circuit breaker unit, along with a distribution panel, allowing abnormal circuit state display for easy observation, allowing easy confirmation of position and state of an operation handle, and improving operativity for effe...
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JP2009259810A |
To provide an electronic trip unit for circuit breaker.This electronic trip units for circuit breaker 100 includes a rating plug 110 having a plurality of switches each configured to indicate a specified current rating for the rating plu...
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JP4353199B2 |
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JP2009245791A |
To provide a wiring instrument between a main leakage breaker connected to a commercial power supply and a load for preventing the occurrence of electric shock due to the breakage (flotation) of a ground line, having a leakage detecting ...
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JP4339668B2 |
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JP4337660B2 |
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JP4333059B2 |
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JP4333060B2 |
A protective switch includes a switch housing, a switching mechanism for closing and opening a movable contact, a tripping mechanism instantaneously pulling a plunger upon detection of an instant current, a tripping control device, an al...
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JP4327766B2 |
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JP2009531827A |
Provided is a circuit breaker, in which the breaking and resetting operations of a contact point unit can be automatically performed by a detecting/breaking unit and a breaking resetting unit. Therefore, the circuit breaker is easy to us...
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JP4322417B2 |
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JP4320927B2 |
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JP4316091B2 |
Trigger has removable module (3), determining long delay triggering parameters, attached on front side (2) of trigger and applying pressure to mobile part (13) via auxiliary component (16). Trigger has also mobile part switching between ...
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JP4310950B2 |
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JP4310892B2 |
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JP4311879B2 |
The potential for an unreliable indication of a tripped overload relay is eliminated in a trip mechanism for an overload relay that includes a housing, and armature mounted in the housing for movement between two contact opening or closi...
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JP4306506B2 |
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JP2009163882A |
To provide an electronic overcurrent circuit breaker doing away with complicated wirings, which can mechanically activate a built-in electromagnetic breaker to break a current path even in case an electronic monitor fails to work at shor...
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JP2009158186A |
To provide a circuit breaker for preventing a load from being broken by incorrect wire connection.The circuit breaker includes a high potential side power supply terminal 10H and a low potential side power supply terminal 10L which are r...
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JP2009158196A |
To provide a circuit breaker for preventing a load from being broken by incorrect wire connection.The circuit breaker includes a high potential side power supply terminal 10H and a low potential side power supply terminal 10L which are r...
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JP2009153331A |
To provide an electric path current detection circuit using a zero-phase current transformer, and to provide a circuit breaker using that circuit.A first resistor 10 of several tens m consisting of a bimetal is provided in an electric pa...
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JP2009153341A |
To provide a DC power distribution system capable of linking loads without utilizing another system, and to provide a circuit breaker.For example, if an emergency signal (fire alarm signal) is transmitted from a fire alarm, an emergency ...
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JP2009153336A |
To provide a distribution system which operates a load safely without cutting off an electric path by a breaker for preventing an overload.A direct-current breaker 114 includes a power measuring portion 114a to measure an output power br...
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JP4291036B2 |
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JP4281941B2 |
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JP4278787B2 |
An electromagnetic compensating device and limiting device hold the contact position of fingers (41) to other contact, when the current through a pair of contact (28,30) is less than a limiting threshold, otherwise drive the fingers to r...
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JP4264817B2 |
The earth fault circuit breaker has a circuit (1) with a switch section (8), null phase current transformer (5) and earth fault detection circuit (6). There is a constant current circuit (4) which converts to alternating current (2). The...
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JP4262766B2 |
A leading auxiliary switch includes an auxiliary switch housing for attachment to a circuit breaker. An operating slide is provided having a sliding edge and being supported so as to be movable in a first sliding direction. A contact car...
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JP4258994B2 |
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JP4258407B2 |
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JP2009093891A |
To provide an electronic breaker having a leakage cut-off function which can detect and inform when a leakage current is flowing in an electric path.The electronic breaker is provided with: a current transformer to detect the size of cur...
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JP2009087689A |
To provide a ground-fault circuit interrupter which effectively removes noise while preventing a signal to be inputted into a leakage detection circuit from becoming small, and reduces a mounting area.The ground-fault circuit interrupter...
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JP4253700B2 |
The breaker has an interrupter that keeps ON and OFF of power circuit of a power supply line (9) connected to a grounding detection circuit (7), in link with ON/OFF from a main contact (2) during dielectric rigidity test. The main contac...
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JP2009070629A |
To provide a three-phase ground-fault circuit interrupter which has a shorter circuit-breaking time and hardly fails even at the time of reverse connection.A first three-phase full-wave rectification circuit 8a connected with three phase...
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JP2009059360A |
To provide a method of limiting read/write access of information stored in an electronic trip unit.The method includes steps for requesting a valid password on one of a communication interface of the electronic trip unit and a display de...
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JP4240171B2 |
A thermomagnetic circuit breaker in a preformed housing (11) comprises a display means (53,55,70,72) for selective display of the reasons for tripping. Tripping bars (42,43), actuable independently of one another, include a release funct...
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JP2009048865A |
To provide a circuit breaker with a single-phase three-wire neutral line phase interruption protection, which circuit breaker does not operate to break circuit connection when a power meter is replaced so that a power supply to a load is...
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JP2009048864A |
To provide a circuit breaker with a single-phase three-wire neutral line phase interruption protection, which does not operate even when a power meter is replaced, ensures that a power supply to a load is not left disconnected when a pow...
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JP4234682B2 |
An arc-fault detecting circuit-breaker system is operable with a protected electrical circuit that operates with direct current or alternating current. A normally closed line circuit breaker has an electrical input and an electrical outp...
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JP4232569B2 |
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JP4225525B2 |
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JP2009026758A |
To provide a breaking device and method for a fault current in which a trip signal is transmitted by detecting and judging a fault current in a plurality of branch circuits and a fault circuit is shut down.The breaking device 10 is provi...
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JP4218455B2 |
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