Chint NB1-63-H2 10kA 1A-63A 1P-4P B C D Curve IEC/EN 60947-2 Thermo-Magnetic DIN Rail MCB CHNT Miniature Circuit Breaker Chint NB1-63-H2 10kA 1A-63A 1P-4P B C D Curve IEC/EN 60947-2 Thermo-Magnetic DIN Rail MCB CHNT Miniature Circuit Breaker
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Chint NB1-63-H2 10kA 1A-63A 1P-4P B C D Curve IEC/EN 60947-2 Thermo-Magnetic DIN Rail MCB CHNT Miniature Circuit Breaker Chint NB1-63-H2 10kA 1A-63A 1P-4P B C D Curve IEC/EN 60947-2 Thermo-Magnetic DIN Rail MCB CHNT Miniature Circuit Breaker
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Chint NB1-63-H2 10kA 1A-63A 1P-4P B C D Curve IEC/EN 60947-2 Thermo-Magnetic DIN Rail MCB CHNT Miniature Circuit Breaker
Chint NB1-63-H2 10kA 1A-63A 1P-4P B C D Curve IEC/EN 60947-2 Thermo-Magnetic DIN Rail MCB CHNT Miniature Circuit Breaker
Chint NB1-63-H2 10kA 1A-63A 1P-4P B C D Curve IEC/EN 60947-2 Thermo-Magnetic DIN Rail MCB CHNT Miniature Circuit Breaker
Chint NB1-63-H2 10kA 1A-63A 1P-4P B C D Curve IEC/EN 60947-2 Thermo-Magnetic DIN Rail MCB CHNT Miniature Circuit Breaker
Chint NB1-63-H2 10kA 1A-63A 1P-4P B C D Curve IEC/EN 60947-2 Thermo-Magnetic DIN Rail MCB CHNT Miniature Circuit Breaker
Chint NB1-63-H2 10kA 1A-63A 1P-4P B C D Curve IEC/EN 60947-2 Thermo-Magnetic DIN Rail MCB CHNT Miniature Circuit Breaker
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Chint NB1-63-H2 10kA 1A-63A 1P-4P B C D Curve IEC/EN 60947-2 Thermo-Magnetic DIN Rail MCB CHNT Miniature Circuit Breaker
Chint NB1-63-H2 10kA 1A-63A 1P-4P B C D Curve IEC/EN 60947-2 Thermo-Magnetic DIN Rail MCB CHNT Miniature Circuit Breaker
Chint NB1-63-H2 10kA 1A-63A 1P-4P B C D Curve IEC/EN 60947-2 Thermo-Magnetic DIN Rail MCB CHNT Miniature Circuit Breaker
Chint NB1-63-H2 10kA 1A-63A 1P-4P B C D Curve IEC/EN 60947-2 Thermo-Magnetic DIN Rail MCB CHNT Miniature Circuit Breaker
Chint NB1-63-H2 10kA 1A-63A 1P-4P B C D Curve IEC/EN 60947-2 Thermo-Magnetic DIN Rail MCB CHNT Miniature Circuit Breaker
Chint NB1-63-H2 10kA 1A-63A 1P-4P B C D Curve IEC/EN 60947-2 Thermo-Magnetic DIN Rail MCB CHNT Miniature Circuit Breaker
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Chint NB1-63-H2 10kA 1A-63A 1P-4P B C D Curve IEC/EN 60947-2 Thermo-Magnetic DIN Rail MCB CHNT Miniature Circuit Breaker

Miniature Circuit Breaker; IEC/EN 60947; for distribution board and final circuit protection

Model
Poles
Rated Operational Voltage Ue
Rated Current In
SKU: NB1-63-H2 Categories: Chint Electrical Materials, Chint MCB
  • Description
  • Additional information
  • Technical Datasheet & Downloads
  • Technical FAQ & Selection Guide
Description
Chint NB1-63-H2 Miniature Circuit Breaker
DIN rail circuit breaker for domestic, commercial, and industrial electrical distribution systems

Product Overview

The Chint NB1-63-H2 miniature circuit breaker operates across rated voltages of 230/400V to 240/415V with current ratings from 1A to 63A. Available in 1P, 1P+N, 2P, 3P, 3P+N, and 4P configurations, it mounts on EN 60715 35mm DIN rail using a fast clip device. Featuring terminal connections compatible with cables, U-type busbars, and Pin-type busbars, it serves domestic, commercial, and industrial electrical distribution installations compliant with IEC/EN 60947.

Technical Parameters

Poles 1P, 1P+N, 2P, 3P, 3P+N, 4P
Rated Operational Voltage Ue 230/400~240/415 V
Rated Current In 1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63 A
Model NB1-63-H2

Key Selling Points

✓ Multiple pole options including 1P, 1P+N, 2P, 3P, 3P+N, and 4P configurations
✓ Thirteen rated operational current ratings from 1A up to 63A
✓ Rated operational voltage span of 230/400V to 240/415V
✓ Fast clip device for secure mounting on 35mm EN 60715 DIN rail
✓ Multi-type terminal connections accepting cable, U-type busbar, and Pin-type busbar
✓ Operating temperature range of 0 to +55 degrees Celsius and storage range of -25 to +70 degrees Celsius
✓ Suitable for domestic installations as well as commercial and industrial distribution systems

Technical Highlights

  • Standard: IEC/EN 60947
  • Poles: 1P, 1P+N, 2P, 3P, 3P+N, 4P
  • Rated operational voltage Ue: 230/400~240/415 V
  • Rated current In: 1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63 A
  • Mounting: On DIN rail EN 60715 (35mm) by means of fast clip device
  • Terminal connection type: Cable, U-type busbar, Pin-type busbar
  • Weight: 0.11 kg per pole

Reference Datasheet Pages

The following pages were selected from the model catalogue and are included for technical reference:

NB1-63-H2 Catalog and Technical Data

NB1-63-H2 technical catalog page 1

NB1-63-H2 technical catalog page 2

NB1-63-H2 technical catalog page 3

NB1-63-H2 technical catalog page 4

NB1-63-H2 technical catalog page 5

NB1-63-H2 technical catalog page 6

NB1-63-H2 technical catalog page 7

NB1-63-H2 technical catalog page 8

Additional information
Poles

1P, 1P+N, 2P, 3P, 3P+N, 4P

Rated Operational Voltage Ue

230/400~240/415 V

Rated Current In

1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63 A

Model

NB1-63-H2

Technical Datasheet & Downloads

📄 Technical Documentation & Product Specifications

Download official engineering datasheets, certified test standards (IEC / UL / CE), wiring diagrams, and dimensional drawings for Chint NB1-63-H2 10kA 1A-63A 1P-4P B C D Curve IEC/EN 60947-2 Thermo-Magnetic DIN Rail MCB CHNT Miniature Circuit Breaker.

📥
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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