Circuit breaker enclosure material identification

Details Circuit breaker enclosure material identification Circuit breaker enclosure material identification

1992-09-24

1993-09-14

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

With housing or support means

200293, 283 92, H01H 902

Patent

active

052453057

ABSTRACT:
The plastic material used to form the case and cover of a molded case circuit breaker includes a filler material such as glass fibers for strength purposes. To insure that the incoming plastic material contains the requisite filler material, a fluorescent material is included with the filler. Illumination of the plastic material under ultra-violet light confirms the presence of the fluorescent material and the filler material prior to fabrication of the circuit breaker case and cover. Illumination of the circuit breaker under ultra-violet light in the field confirms both the presence of the filler material as well as the source of manufacture.

REFERENCES:
patent: 4513268 (1985-04-01), Seymour et al.
patent: 5005873 (1991-04-01), West

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