| Patents for H01H 83 - Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current (5,042) |
|---|
| 05/10/1994 | CA1329407C Modular option deck assembly |
| 05/10/1994 | CA1329404C Circuit breaker auxiliary device snap-on package and method of making same |
| 04/27/1994 | EP0593733A1 Automatic miniature circuit breaker with z-axis assemblable contact assembly. |
| 04/27/1994 | EP0593688A1 Automatic miniature circuit breaker with z-axis assemblable trip mechanism |
| 04/27/1994 | EP0378679B1 Circuit breaker auxiliary device snap-on package |
| 04/26/1994 | CA1328900C Molded case circuit breaker shunt trip unit |
| 04/26/1994 | CA1328899C Molded case circuit breaker multiple accessory unit |
| 04/20/1994 | EP0592829A1 Overload relay to combine with contactors |
| 04/19/1994 | US5305173 Electrical connector with breaking current for leak |
| 04/14/1994 | WO1994008348A1 Electromagnetically operated switching device |
| 04/13/1994 | EP0591679A1 Circuit interrupter with current monitoring |
| 04/13/1994 | CN2161993Y Dynamic oil and water mixed alarm |
| 04/13/1994 | CN2161992Y Automatic protective switch |
| 04/12/1994 | US5302787 Automatic miniature circuit breaker with Z-axis assemblable contact assembly |
| 04/06/1994 | EP0590937A2 Electrical switching apparatus with digital trip unit and memory reset |
| 04/06/1994 | EP0590936A2 Electrical switching apparatus with digital trip unit and automatic frequency selection |
| 04/06/1994 | CN2160993Y Electric leakage breaker |
| 03/09/1994 | CN2158573Y Protective switch for leakage of electricity |
| 03/09/1994 | CN2158572Y Protection contactor for voltage falling or leakage of phase |
| 03/08/1994 | US5293522 Ground fault circuit breaker with test spring/contacts directly mounted to test circuit of printed circuit board |
| 03/08/1994 | US5293142 Ground fault circuit breaker with flat bus bars for sensing coils |
| 03/01/1994 | US5291165 Insulating barriers for circuit breaker bus bars and a ground fault circuit breaker incorporating same |
| 02/16/1994 | CN2156585Y Structure improved leakage breaker |
| 02/08/1994 | US5284528 Metallic glasses having a combination of high permeability, low coercivity, low ac core loss, low exciting power and high thermal stability |
| 02/03/1994 | DE4225458A1 Differential current measurement using summing current ring-core transformer - has magnetoresistive sensor in first flux gap in core and provides pre-adjustment by flux from permanent magnet and yoke connected across second air gap |
| 02/02/1994 | CN2155069Y Phase loss automatic protecting a.c contactor |
| 02/01/1994 | US5283543 Multi-phase current monitoring device |
| 01/26/1994 | CN1081280A Receptacle for a converter for an earth-leakage current circuit-breaker and a converter |
| 01/19/1994 | CN2153863Y Excess voltage protective non-fuse wire switch |
| 01/12/1994 | CN2153140Y Protector for low-voltage electricity use |
| 01/12/1994 | CN2153139Y Single-phase automatic knife-switch |
| 01/12/1994 | CN2153138Y Electromagnetic tripper |
| 01/12/1994 | CN2153137Y Multifunctional three-phase ac contactor |
| 01/06/1994 | WO1994000862A1 Trip energy monitor |
| 01/06/1994 | CA2115358A1 Trip energy monitor |
| 01/05/1994 | CN2152303Y Protector for motor |
| 01/05/1994 | CN1080430A Test key arrangement for an earth-leakage current circuit-breaker or differential-current circuit-breaker |
| 01/04/1994 | US5276416 Circuit breaker |
| 12/29/1993 | EP0575899A1 Test circuit device for a fault current protective circuit breaker |
| 12/29/1993 | EP0575898A1 Test circuit device for a fault current protective circuit breaker |
| 12/29/1993 | CN2151537Y Open-phase protector |
| 12/29/1993 | CN1023365C Programmable inverse time delay circuit |
| 12/29/1993 | CN1023359C Circuit breaker with moving magnetic core for low current magnetic trip |
| 12/23/1993 | DE4215900C1 Difference current detection system for DC fault current - has three or more current conductors arranged symmetrical to centre of sum current transducer core |
| 12/15/1993 | CN2149709Y Protector for electric motor against phase interruption |
| 12/01/1993 | CN2148394Y Three phase motor protecting switch |
| 12/01/1993 | CN2148393Y Permanent-magnet loss-of-phase protecting energy-saving contactor |
| 11/30/1993 | CA2097277A1 Series gapped mov surge arrester |
| 11/25/1993 | DE4215899C1 Difference current detection system - uses annular core with two opposing gaps each with magnetic field sensor enclosing symmetrical current leads |
| 11/24/1993 | EP0570790A2 Box for a transformer for a ground fault current interrupter and transformer |
| 11/24/1993 | EP0570603A1 Fail safe differential current circuit-breaker |
| 11/24/1993 | CN1022878C Two piece cradle latch, handle barrier locking insert and cover interlock for circuit breaker |
| 11/18/1993 | DE4216249A1 Three=phase motor protection switch for electrical installation device - has undervoltage release component fitted to switch housing with release pin cooperating with phase protection slider |
| 11/11/1993 | WO1993022786A1 Automatic miniature circuit breaker with z-axis assemblable current response mechanism |
| 11/11/1993 | WO1993022785A1 Automatic miniature circuit breaker with z-axis assemblable trip mechanism |
| 11/11/1993 | WO1993022784A1 Automatic miniature circuit breaker with z-axis assemblable contact assembly |
| 11/11/1993 | DE4215184A1 Detecting differential currents for fault current circuit breaker - using magnetic flux induced state change in medium not contg. secondary winding |
| 11/10/1993 | CN2146071Y Neutral potential shifting integrated protection circuit breaker |
| 11/09/1993 | US5260676 Dual wound trip solenoid |
| 11/03/1993 | CN1078066A Non-electric AC contactor |
| 11/02/1993 | US5258733 Molded case circuit breaker having improved trip unit |
| 11/02/1993 | CA1323897C Molded case circuit breaker actuator-accessory unit |
| 10/13/1993 | EP0565008A1 Test button device for an earth fault circuit breaker or a differential current circuit breaker |
| 10/13/1993 | EP0504162A4 Circuit breaker and auxiliary device therefor |
| 10/06/1993 | EP0563606A2 Current transformer for earth-leakage circuit breakers which are sensitive to current pulses |
| 10/05/1993 | US5250918 Automatic miniature circuit breaker with Z-axis assemblage current response mechanism |
| 09/29/1993 | EP0562970A1 Assembly of a toroidal core with coil |
| 09/29/1993 | CN1076811A Apparatus for cutting of circuit |
| 09/28/1993 | US5248953 Thermal overload protection device for electronic components |
| 09/22/1993 | EP0561210A2 Overcurrent detector circuit for a circuit-breaker |
| 09/22/1993 | EP0561005A1 Trip device with holding magnet for protective switches, in particular for ground fault circuit interrupter |
| 09/15/1993 | CN2142226Y Protector for electric motor |
| 09/14/1993 | US5245302 Automatic miniature circuit breaker with Z-axis assemblable trip mechanism |
| 09/08/1993 | EP0493486A4 Energy management accessory for circuit breaker |
| 09/08/1993 | CN2141945Y Loss-of-phase protector for ac three phase motor |
| 09/08/1993 | CN2141932Y 漏电保护功能单元 Leakage protection unit |
| 09/08/1993 | CN1076055A Protective switch, especially used for protection against unnormal current |
| 09/01/1993 | EP0558428A1 Toroidal transformer for class A differential sensor |
| 09/01/1993 | CN1075820A Single-pole plus neutral circuit breaker with test circuit |
| 09/01/1993 | CN1022004C Circuit breaker with moulded outer shell |
| 08/25/1993 | EP0557214A1 Single-pole and neutral differential circuit breaker with test circuit |
| 08/25/1993 | EP0556602A2 Thermal trip device for electrical switchgear |
| 08/25/1993 | CN2141130Y Automatic-control multi-functional safety plug |
| 08/25/1993 | CN2141124Y Protective electrical appliance with multi-functional tripping circuit |
| 08/19/1993 | WO1993016479A1 Wire wound core |
| 08/10/1993 | US5235488 Wire wound core |
| 08/05/1993 | DE4202910A1 Thermal overload protection relay e.g. for electric motors - is separated from function unit and connected to fuse which is disconnected from coil when overloading occurs |
| 07/28/1993 | CN1074782A Overload cut off self-lock type relay |
| 07/21/1993 | CN2138836Y Three phase ac phase losing protective contactor |
| 07/21/1993 | CN2138835Y Automatic switch for overload and short-circuit |
| 07/07/1993 | CN1021526C Crossbar assembly |
| 06/30/1993 | EP0548732A2 Earth leakage circuit breaker |
| 06/30/1993 | EP0548731A2 Earth leakage and/or differential current circuit breaker |
| 06/29/1993 | US5223810 Trip-reset mechanism for GFCI receptacle |
| 06/23/1993 | CN2137045Y Automatic protecting magnetic starter for phase-defect |
| 06/23/1993 | CN1021388C Multipolar earthing leakage switch comprised of standard fittings |
| 06/22/1993 | CA1319413C Molded case circuit breaker actuator-accessory module |
| 06/09/1993 | CN2135855Y Snap separating type electric leakage protector |
| 06/09/1993 | CN1021168C Oprating mechanism of an auxiliary trip unit for modular circuit breaker |
| 06/09/1993 | CN1021167C Checkout device for fault current protective switch |