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Chint NBH-100 MCB

Poles
Rated Current
Tripping Curve
Breaking Capacity
Category: Chint MCB
  • Description
  • Additional information
  • Technical Datasheet & Downloads
  • Technical FAQ & Selection Guide
Description

# Chint NBH-100 High Breaking Capacity MCB – 10kA Miniature Circuit Breaker

## Product Overview

**Brand:** CHINT
**Model:** NBH-100
**Type:** High Breaking Capacity Miniature Circuit Breaker (MCB)
**Breaking Capacity:** 10kA
**Standard:** IEC/EN 60898-1, GB 10963.1

## Technical Specifications

| Parameter | Specification |
|———–|————–|
| **Rated Current** | 1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A, 80A, 100A |
| **Poles** | 1P, 2P, 3P, 4P |
| **Rated Voltage** | 230V/400V AC |
| **Rated Frequency** | 50/60Hz |
| **Breaking Capacity** | 10kA |
| **Trip Curves** | B, C, D |
| **Mechanical Life** | 20,000 operations |
| **Electrical Life** | 10,000 operations |
| **Mounting** | DIN Rail 35mm |
| **Protection Class** | IP20 |

## Features

✅ **High Breaking Capacity** – 10kA for demanding applications
✅ **Wide Current Range** – Up to 100A rated current
✅ **Multiple Trip Curves** – B, C, D curves available
✅ **Compact Size** – Standard DIN rail mounting
✅ **Reliable Performance** – Compliant with international standards
✅ **Visual Indication** – Clear ON/OFF position indicator

## Applications

– Commercial building distribution systems
– Industrial facility power protection
– High inrush current equipment protection
– Motor protection circuits
– Distribution panel installations
– Critical circuit protection

## Trip Curve Characteristics

| Curve Type | Application |
|————|————-|
| **B Curve** | Resistive loads, lighting circuits (3-5In) |
| **C Curve** | Inductive loads, small motors (5-10In) |
| **D Curve** | High inrush loads, transformers, motors (10-20In) |

## Certifications

– CE Certified
– IEC 60898-1 Compliant
– GB 10963.1 Compliant

## Why Choose Chint NBH-100?

– **High Performance:** 10kA breaking capacity for safety
– **Flexible Configuration:** Multiple poles and current ratings
– **Global Standards:** Meets international certification requirements
– **Cost-Effective:** Competitive pricing from authorized distributor
– **Quick Delivery:** Stock available from Shanghai warehouse

## Ordering Information

Contact us for:
– Competitive wholesale pricing
– Technical consultation
– Bulk order discounts
– Fast delivery options

[Request a Quote](#)

—

**Keywords:** Chint NBH-100, High Breaking Capacity MCB, 10kA Circuit Breaker, DIN Rail MCB, Industrial Circuit Protection, CHINT Breaker, IEC 60898 MCB

Additional information
Poles

1P, 2P, 3P, 4P

Rated Current

63A, 80A, 100A

Tripping Curve

C, D

Breaking Capacity

10kA

Technical Datasheet & Downloads

📄 Technical Documentation & Product Specifications

Download official engineering datasheets, certified test standards (IEC / UL / CE), wiring diagrams, and dimensional drawings for Chint NBH-100 MCB.

📥
Official Technical Datasheet (PDF) Complete electrical ratings, tripping characteristics, dimensions, and compliance specifications.
Request Official Datasheet (PDF)
📐
2D/3D CAD & Dimensional Drawings STEP, DXF, and PDF CAD drawing files for panel builders and switchgear designers.
Request CAD Model
Certified Standards: IEC 60898-1, IEC 60947-2, CE, RoHS, ISO 9001:2015
Manufacturer: Shanghai Newtrend Electric Co., Ltd. (Global Export Compliance)
Engineering Support: 24-hour response for custom voltage ratings, auxiliary contacts, and technical consulting.
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?

A

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?

A

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?

A

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)?

A

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?

A

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.

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