Chint original NB7 Miniature Circuit Breaker 6A 10A 16A 20A 25A 32A 40A 50A 63A B C D type 1P 2P 3P 4P 6KA Chint NB7 MCB

General

Chint NB7 series miniature circuit breaker is applicable to the circuit with an alternating current of 50Hz or 60Hz, rated voltage of 240/415V, and rated current up to 63A for overload protection and short circuit protection, ans also for non-frequent operational transformation in the circuit under normal condition.

This product can be applied to various places such as industrial, commercial, and tall buildings and residential houses.

The product meet the standards of IEC60898-1.

Technical data

Rated Current (In): 1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A;

Type of instantaneous release: type B (3-5)In, type C (5-10)In, type D (10-16)In;

Number of poles: Single Pole, Two Poles, Three Poles, Four Poles;

Rated short circuit breaking capacity:

Electrical life: no less than 4,000 times

Mechanical life: no less than 10,000 times

Over-current protection characteristics:

Tripping performance diagram:

Wiring: good for connection of leads of less than 25mm2;

wiring method: screw hold-down with a toque of 2Nm

Overall and mounting dimensions (mm):

Example of ordering: 50PCS NB7 miniature circuit breakers, 2P, 25A, type C