CHINT NB1Z-63 AC/DC Isolating Air Switch 1P/2P 220V

Name: CHINT NB1Z-63 AC/DC Isolating Air Switch 1P/2P 220V
Brand: CHINT
SKU: 1600724079687

BCD Curve:B, C, D
Type:MCB
Brand Name:Chint
Place of Origin:China
Model Number:NB1Z-63
Rated Frequency (Hz):50/60Hz
Protection:LSI
Breaking Capacity:6kA, 10kA
Rated Voltage:220VDC, 230/400VAC
Type:used both for AC and DC circuit

Poles

Rated Voltage

Rated Current

SKU: 1600724079687 Category: Others

Description

NB1Z-63 AC/DC miniature circuit breaker is for the line with voltage no more than DC 220V or AC 230/400V. The rated current region is from 1~63A. It s major function is to protect the line from over load and short circuit. It is widely used in industrial, commerical, high building, and private home etc. It is high quality which meet the IEC60898-2 standard.

Specification:

Model: Chint NB1Z-63

Rated value (V): 1P: AC230/400,DC220; 2P:AC400, DC220

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

Poles: 1P, 2P

Breaking Capacity: 6KA

Tripping type: B, C

Mechainical life: 20000 times

Pollution level: class 2

Protection level: IP20

Standard: IEC 60898-2

Additional information

Weight	2 kg
Dimensions	25 × 25 × 25 cm
Rated Current	1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A
Poles	1P, 2P, 3P, 4P

Technical Datasheet & Downloads

📄 Technical Documentation & Product Specifications

Download official engineering datasheets, certified test standards (IEC / UL / CE), wiring diagrams, and dimensional drawings for CHINT NB1Z-63 AC/DC Isolating Air Switch 1P/2P 220V.

📥

Official Technical Datasheet (PDF) Complete electrical ratings, tripping characteristics, dimensions, and compliance specifications.

📐

2D/3D CAD & Dimensional Drawings STEP, DXF, and PDF CAD drawing files for panel builders and switchgear designers.

Technical FAQ & Selection Guide

💡 Frequently Asked Technical Questions & Selection Guide

Pure engineering specifications, tripping curve parameters, and electrical selection guidance for panel builders and system designers.

Voltage & Load Sizing

How to verify rated operational voltage, frequency, and load duty cycle?

Verify that the nominal line voltage (AC 230V single-phase or 400V/415V/690V three-phase at 50/60Hz, or DC voltage ratings) falls within the continuous maximum operating limits of the device. Check duty cycle ratings (continuous vs intermittent duty) to ensure thermal stability under full load.

Protection & Environment

What ingress protection (IP Rating) and environmental enclosures are recommended?

For clean indoor electrical rooms, standard IP20 modular DIN-rail housings are recommended. For outdoor, industrial washdown, or dusty environments, mount components inside weatherproof enclosures rated IP65/IP66 with UV-resistant polycarbonate or powder-coated steel enclosures equipped with compression cable glands.

Selectivity & Grading

How to ensure upstream and downstream coordination in power distribution boards?

Ensure proper discrimination by grading current thresholds and tripping time delays: upstream devices should have higher current ratings and intentional short-time delays (Class S), allowing downstream branch MCBs to clear localized faults without blacking out the entire facility.

Installation & Mounting

What mounting rails, busbars, and spatial clearances are required?

Components mount on standard symmetrical 35mm DIN rail (EN 60715 / TH35-7.5) or backplate screw fixings. Maintain recommended top/bottom ventilation gaps (typically 30–50mm) to ensure unrestricted air convection, and use standard pin/fork comb busbars to minimize contact resistance and wiring errors.

Conductor & Torque Sizing

What conductor sizes and terminal tightening torques should be applied?

Select copper or aluminum conductor cross-sections complying with IEC 60364-5-52 current-carrying capacity tables based on continuous load. Always use a calibrated torque screwdriver or torque wrench to tighten terminal screws to the manufacturer-specified torque to prevent hot-spot degradation and loose connections.