Chint Circuit Breakers Circuit breaker 627132 - Chint 179644, The Chint NB1L circuit breaker, model number 179644, is a 2-pin device designed to handle up to 16 A. Manufactured by Chint, it ensures reliable protection for electrical circuits against overloads and short circuits. Commonly used in residential and commercial settings, it is essential for maintaining electrical safety. Chint 179644 NB1L Circuit Breaker 2-pin 16A Overload & Short-Circuit Protection