46 C.F.R. § 169.670 Circuit breakers.
Title 46 - Shipping
Each circuit breaker must be of the manually reset type designed for— (a) Inverse time delay; (b) Instantaneous short circuit protection; and (c) Repeated opening of the circuit without damage to the circuit breaker.
Title 46: Shipping
PART 169—SAILING SCHOOL VESSELS
Subpart 169.600—Machinery and Electrical
Electrical Installations Operating at Potentials of Less Than 50 Volts on Vessels of Less Than 100 Gross Tons
§ 169.670 Circuit breakers.

