In order to dissipate heat losses from the inner conductor (21), the circuit breaker (20) having an elongated inner conductor (21) and an outer conductor (22) which surrounds the inner conductor (21) like a housing has at least one heat pipe (1) which extends from the inner conductor (21) to the outer...http://www.google.fr/patents/US7253379?utm_source=gb-gplus-shareBrevet US7253379 - High voltage circuit breaker with cooling
