H - Electricity – 01 – H
Patent
H - Electricity
01
H
H01H 71/00 (2006.01) H01H 71/10 (2006.01) H01H 89/06 (2006.01) H01H 51/22 (2006.01) H01H 71/46 (2006.01)
Patent
CA 2338671
A circuit breaker has a set of remotely controllable secondary contacts connected in series with the main contacts which provide overcurrent protection. The secondary contacts are opened and closed by a latching solenoid having a close coil and an open coil which are separately connected to switched terminals of a first switch. A voltage source, which may be ac, dc or pulsed, is connected to the common terminal of the first switch through a rectifier. The first switch is coupled to the plunger of the latching solenoid which opens and closes the set of secondary contacts and enables the coil which operates the set of secondary contacts to the opposite state. Energization of the enabled coil is completed by additional, remotely located switches connected between each coil and ground. A status line connected to one of the switched terminals of the first switch is energized when the associated coil is enabled to indicate the open/close status of the set of secondary contacts.
Adamson Wayne Gerald
Davidson David Lee
Simms Kevin Anthony
Uhlman Kenneth L.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Corporation Eaton
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