CHINT NB1-63DC DC Miniature Breaker 500V/1000V 10A-63A

Name: CHINT NB1-63DC DC Miniature Breaker 500V/1000V 10A-63A
Brand: CHINT
SKU: 1600720664442

Description

Product Overview

CHINT NB1-63DC DC Miniature Breaker 500V/1000V 10A-63A is designed for low-voltage direct current protection in solar PV systems, communication systems, and related DC circuits. This product family is suitable for buyers who need compact DC overcurrent and short-circuit protection across multiple current ratings.

Main Features

Designed for DC systems up to 500VDC / 1000VDC
Available current range from 10A to 63A
Suitable for photovoltaic DC systems and communication applications
Compact DIN rail miniature breaker structure
Useful for export supply, project matching, and OEM applications

Technical Specifications

Model	NB1-63DC
Rated Current	10A-63A
Rated Voltage	500VDC / 1000VDC
Poles	1P / 2P / 4P family options
Trip Curve	Type C
Breaking Capacity	6kA
Standard	IEC/EN 60947-2
Certificates	CCC, CE, CB, TUV

Typical Applications

Solar PV DC protection
Communication systems
Battery-side DC distribution
Compact renewable energy control cabinets
Low-voltage direct current branch protection

Buyer Notes

NB1-63DC is a broader DC breaker family page covering common 500VDC and 1000VDC protection needs. If a buyer needs an exact single configuration such as 2P 1000V 32A, a dedicated SKU page can be provided separately.

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, 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 NB1-63DC DC Miniature Breaker 500V/1000V 10A-63A.

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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.

Curve Selection

How to choose between Tripping Curves B, C, and D for this miniature circuit breaker?

Curve B trips at 3–5 In (designed for resistive loads, electric heating, and domestic appliances with negligible inrush). Curve C trips at 5–10 In (the standard international choice for residential and commercial lighting, socket outlets, and small induction motors). Curve D trips at 10–14 In (specifically engineered for high-inrush inductive equipment such as industrial transformers, heavy motors, compressors, and welding circuits).

Breaking Capacity

How do I determine whether 6kA or 10kA breaking capacity is required for my installation?

Breaking capacity (Icn/Icu) must exceed the calculated prospective short-circuit fault current at the installation point. 6kA (IEC 60898-1) is standard for residential consumer units and sub-distribution branch circuits located downstream. 10kA (IEC 60947-2) is required for industrial facilities, main switchboards, commercial distribution panels, or circuits situated close to supply transformers where fault levels are high.

Poles & Neutral Isolation

How to choose the correct number of poles (1P, 1P+N, 2P, 3P, 3P+N, 4P) for single-phase and three-phase circuits?

For single-phase 230V circuits: 1P provides active phase protection; 1P+N or 2P isolates both live and neutral lines simultaneously (essential for TT earthing systems and sensitive sub-panels). For three-phase 400V systems: 3P protects balanced 3-wire motor loads; 3P+N or 4P is required for 4-wire mixed single-phase loads to ensure complete neutral disconnection during isolation.

DC vs AC Application

Can this circuit breaker be used in DC circuits (Solar PV, Battery Storage, Telecom)?

Standard AC breakers cannot safely extinguish DC arcs due to the absence of natural zero-crossing current. For DC circuits (60V to 1000V DC), select specialized DC breakers (such as DZ158-125 DC or NM8NDC series) equipped with permanent magnetic arc-blowout chutes and strictly observe polarity wiring to prevent arc re-ignition.

Modular Accessories & Interlocks

What modular accessories and mechanical interlocks can be fitted to this breaker?

Standard modular clip-on accessories can be mounted directly on the side without tools: OF (Auxiliary Contact for remote status indication), SD (Alarm Contact for trip fault signaling), MX (Shunt Trip for remote emergency tripping), MN (Under-voltage Release for voltage loss protection), and NXBZ mechanical interlock kits for manual generator/mains transfer switches.