Assertion: voltage circuit breaker | /r/HasProperty | contained with internal control power source
Facets:
Source sentences:
text: These typically require a separate power source, such as a battery, although some high-voltage circuit breakers are self-contained with current transformers, protective relays, and an internal control power source.
text: The trip solenoid that releases the latch is usually energized by a separate battery, although some high-voltage circuit breakers are self-contained with current transformers, protection relays, and an internal control power source.