| Patent Number |
Title Of Patent |
Date Issued |
| 4827088 |
Electrical ring main unit |
May 2, 1989 |
| A three-phase electrical ring main unit comprising a lower chamber module (30) having a wall structure formed from insulating resin material; three input contacts (35), one for each phase, mounted within the lower chamber; three lower switching contacts (37), each mounted within the lowe |
| 4794362 |
Alternating current power circuit and fuse therefor |
December 27, 1988 |
| A fuse for an alternating current power circuit. The fuse comprises an input terminal (4), a first contact (5) electrically connected to the input terminal, an output terminal (9) and a second contact (8) electrically connected to the output terminal. A fusible element (11) electrica |
| 4742323 |
Fuse for an alternating current power circuit |
May 3, 1988 |
| A fuse for an alternating current power circuit in the medium voltage (3.3 kV to 38 kV) range. The fuse comprises a sealed chamber and a first electrode (41) is mounted within the chamber, the first electrode having a substantially circular periphery (42) and being electrically connected |
| 4692733 |
Fuse for an alternating current power circuit |
September 8, 1987 |
| A fuse for an alternating current power circuit in the medium voltage (3.3 kV to 38 kV) range. The fuse comprises a sealed chamber and a first electrode (41) is mounted within the chamber, the first electrode having a substantially circular periphery (42) and being electrically connected |
| 4633047 |
Isolator switch with interlock |
December 30, 1986 |
| An electrical isolator has an insulated housing with input and output conductors (1, 2) therein. A spring contact (6) is mounted within the housing for movement between open and closed positions. An insulating shroud (15) fully shields that part of the bridging contact accessible thr |
