Change-over position display device for use in a switch

Choked condition detector for an air-purifying device

Circuit breaker

Circuit breaker bell alarm accessory having optional reset...

Circuit breaker bell alarm accessory with both automatic reset a

Circuit breaker bell alarm accessory with lock-out

Circuit breaker bell alarm accessory with lockout function

Circuit breaker bell alarm reset mechanism

Circuit breaker closure control and condition indicator apparatu

Circuit breaker contact position indicating unit

Circuit breaker contacts condition indicator

Circuit breaker employing an illuminated operating handle

Circuit breaker empolying illuminating indicators for open...

Circuit breaker having improved movable contact position indicat

Circuit breaker having opening spring position indicator

Circuit breaker with a visual indication of a trip

Circuit interrupter with optical indicator

Circuit protector having a lamp within its handle and terminals

Closely spaced back-lit push button array

Combination low oil indicator and kill switch for internal combu