Features: The Chint Circuit Breaker is high quality! The rated impulse withstand voltage Uimp(kV) 8 The rated working voltage Ue(V), AC 50/60hz 230/240,400/415,500,690 The breaking capacity code is S 2P 3P 4P H 3/4P The molded case circuit breaker can protect the lines and equipment in distribution lines when overloaded, short circuit and Undervoltage occur, and can also provide overload, short circuit, and under-voltage protection for infrequent starting of motors. Grade of shell frame NXM series molded case circuit breakers: 63A, 125A, 160A, 250A, 400A, 630A, 800A, 1000A、1250A、1600A The rated working voltage UE (AC): 230v/240v, 400V/415V, 500V, 690V(63A, 125A shell frame has no 690V, and 1250A/1600A shell frame has no 500V) Code of breaking capacity: s and h Number of poles: 2P, 3P, 4P(2P is only applicable to shell products of 250A and below) Release types: electromagnetic, thermomagnetic, and thermally adjustable magnetic fixed Installation mode: fixed type and plug-in type NXM-160-S P /4 300 NXM: Product code NXM series molded case circuit breaker 160: current grade code of shell frame 63a 125a 160a 250a 400a 630a 800a 1000a 1250a 1600a S: breaking capacity code s 25kah: 50ka (63a 125a) s 36kah: 50ka (160a 250a) S 50kA H：70kA(400A 630A 800A 1000A 1250A 1600A) P: operation mode code No code handle direct operation P electric operation Z: rotating handle operation 4. Number of poles Code 2: Two poles 3: Three poles 4: Four poles The first digit of 300 release mode and internal accessory code represents release mode 2: electromagnetic type 3: Thermomagnetic (The function of thermal overload alarm without tripping can only be selected 3) The second and third digits are internal accessory codes Package Includes: 1 x Chint Circuit Breaker NXM-160S