Type 3 manual reset switchable thermal circuit breaker.  Breaker will remain tripped in the off position until the lever is manually reset to activate the circuit.  Red button can be pressed to manually disconnect the circuit.  Designed for marine and transportation environments.  Branch  protection interrupt rating is 2.5K amps per ABYC E-9.  gasketed seal makes circuit breaker splash proof after mounting.  Available in 30, 40, and 50 amp ratings.