[1] : The Collaborative International Dictionary of English v.0.48

circuit breaker \cir"cuit break"er\, n. elec.
   a device contained within an electrical circuit designed to
   interrupt the circuit when the current exceeds a preset
   value; it is sometimes called a contact breaker. its
   function is to prevent fire or damage to the circuit or the
   devices on the circuit which could be caused by excess
   current, such as that caused by a short-circuit. it differs
   from a fuse in not having a conducting element which melts
   see 2nd fuse, n.. circuit breakers are designed to be
   easily reset, i. e. to reclose the circuit after it has been
   opened by the circuit breaker; this is usually accomplished
   by simply moving a switch back and forth. they are commonly
   used in buildings to protect individual electrical lines, and
   are often contained in groups within a box called a circuit
   breaker panel, which divides the current from a main
   electrical line into multiple circuits each protected by a
   separate circuit breaker. less commonly they may be found on
   individual devices.
   pjc
see also:
contact breaker fuse 

Breaker >> B Words
Breaker, definition of term: Breaker
breaker_pag1.html

Contact >> C Words
Contact, definition of term: Contact
contact_pag1.html

Contact Lense >> C Words
Contact Lense, definition of term: Contact Lense
contact+lense_pag1.html

Contact Lens >> C Words
Contact Lens, definition of term: Contact Lens
contact+lens_pag1.html

Contact Dermati >> C Words
Contact Dermati, definition of term: Contact Dermati
contact+dermati_pag1.html

In Contact >> I Words
In Contact, definition of term: In Contact
in+contact_pag1.html

Eye Contact >> E Words
Eye Contact, definition of term: Eye Contact
eye+contact_pag1.html

Circuit Breaker >> C Words
Circuit Breaker, definition of term: Circuit Breaker
circuit+breaker_pag1.html