Circuit for tripping breaker

Details Circuit for tripping breaker Circuit for tripping breaker

1997-01-03

1999-11-23

Fleming, Fritz

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

361154, 361206, H01H 4710

Patent

active

059911441

ABSTRACT:
An apparatus for tripping a circuit breaker having a trip coil. A trip circuit is coupled at a first node to a first power supply and at a second node to the trip coil. The trip circuit comprises a switch for closing in response to a control signal, a coil coupled to the switch so that current is allowed to flow through the coil when the switch closes, relay contacts operatively coupled to the coil so that the relay contacts close when current flows through the coil, and a zener diode for providing a low impedance path after the relay contacts close and for applying a holding voltage across the coil sufficient to keep the relay contacts closed while current flows through the low impedance path.

REFERENCES:
patent: 3560807 (1971-02-01), Urfer et al.
patent: 4000445 (1976-12-01), Wilson
patent: 4535380 (1985-08-01), Geary

Affiliated with

Also associated with

Rating

Circuit for tripping breaker does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit for tripping breaker, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for tripping breaker will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1229164