CHINT NXZBN Changeover Switch

Name: CHINT NXZBN Changeover Switch
Brand: CHINT

Description

CHINT NXZBN ATSE is a high-performance atse designed for seamless automatic transfer between power sources, ensuring uninterrupted power supply for critical systems. Built to CHINT’s rigorous quality standards, it delivers exceptional durability and precision for professional installations.

1. Product Overview

The NXZBN series represents CHINT’s commitment to excellence in atse technology. Engineered for AC 50Hz/60Hz low-voltage systems, it combines advanced design with robust construction to meet the demands of modern power distribution networks across residential, commercial, and industrial sectors.

2. Main Features

CB Class: CB Class
16A-63A: 16A-63A
Compact design: Compact design
Fire control: Fire control linkage
N-phase overlapping: N-phase overlapping
Quality Assurance: Genuine CHINT product with international certifications

3. Technical and Application Notes

Ensure professional installation following local electrical codes. The product is designed for DIN rail mounting in standard distribution boards. Selection should be based on load requirements and environmental conditions. Please refer to the technical catalog for detailed specifications.

4. Typical Applications

Power distribution panels and switchboards
Industrial control systems
Commercial building infrastructure
Renewable energy installations
OEM equipment integration

5. Ordering Support

Please specify the required specifications including rated current, voltage, and configuration when ordering. We provide technical consultation and volume pricing for project orders. Contact us for customized solutions tailored to your application needs.

6. Product Catalog

Additional information

Poles	3P, 4P
Rated Current	16A, 20A, 25A, 32A, 40A, 63A
Switching Type	Automatic (ATS)

Technical Datasheet & Downloads

📄 Technical Documentation & Product Specifications

Download official engineering datasheets, certified test standards (IEC / UL / CE), wiring diagrams, and dimensional drawings for CHINT NXZBN Changeover Switch.

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

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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.