H - Electricity – 01 – R
Patent
H - Electricity
01
R
306/151
H01R 13/68 (2006.01) H01H 85/20 (2006.01) H01H 85/24 (2006.01) H01H 85/56 (2006.01)
Patent
CA 1216319
PULL OUT FUSIBLE SWITCHES Abstract of the Disclosure Assembly systems for compact N-pole fusible pull out switches of different ratings use the same two part insulator bases and the same insulator pull out heads in all switches. In one system, for switches of a given current rating but two different voltage ratings, there are two types of fixed contacts in the base but the contacts are the same for both voltage ratings; the fuseholder/stab contact members in the head are all the same for both switch ratings, and all mounting hardware and incidental hardware is the same for all switches. The voltage ratings are differentiated from each other only by different base terminals and by different insulator barriers over the base contacts. In another system covering six switch ratings (three different current ratings and two different voltage ratings) the two part insulator bases, the insulator heads, and the base terminals are all the same and all mounting hardware and incidental hardware is the same for all rating combinations; the six different voltage/current ratings are differentiated from each other only by different fixed contacts in the base, by different fuseholder/stab members in the head, and by different insulator barriers. The second system has only three set of fixed contacts each used for two different rating combinations. Both systems preclude misassembly and misapplication in the field. A particularly compact fuseholder/stab construction is provided for high current ratings.
476508
Boltswitch Inc.
Macrae & Co.
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