1610-21-20A, Type III ATO style 20A breaker. Automotive type, color coded thermal circuit breakers that mount like a standard automotive fuse into a socket. Meets the requirements of SAE J553. Miniature single pole press to reset. Offers the benefits of circuit breaker performance and convenience in a fuse style package. Eliminates need for changing fuses. Yellow. Call up for quantity discount over 100 pcs- very good high volume pricing is available!