CHINT NXB-63 C63 2-Pole Miniature Circuit Breaker (MCB) is designed to provide overload and short-circuit protection in low-voltage AC electrical distribution systems. Its thermal-magnetic tripping mechanism combines thermal protection against sustained overload conditions with magnetic protection against short-circuit faults.
With a rated current of 63A, C-type tripping characteristic, two-pole configuration and 6kA rated short-circuit breaking capacity, this MCB is designed for appropriately engineered residential, commercial and light industrial distribution applications.
Its compact modular housing supports installation on a standard 35mm DIN rail in compatible distribution boards and electrical enclosures.
Key product details
Manufacturer: CHINT
Series: NXB-63
Product type: Miniature Circuit Breaker
Configuration: Double Pole (2P)
Rated current: 63A
Trip characteristic: C Curve
Breaking capacity: 6kA
Rated voltage marking: 400V AC
Standard: IEC/EN 60898-1
The following table separates the exact product variant from general NXB-63 series specifications.
| Parameter | Specification |
|---|---|
| Manufacturer | CHINT |
| Product series | NXB-63 |
| Product category | Miniature Circuit Breaker (MCB) |
| Model designation | NXB-63 C63 |
| Manufacturer reference | 814098 |
| Number of poles | 2P – Double Pole |
| Rated current (In) | 63A |
| Tripping characteristic | C Curve |
| Instantaneous magnetic trip range | 5–10 × In |
| Rated operational voltage (Ue) | 400V AC marking |
| Series voltage range | 380/400/415V AC for multipole variants |
| Rated frequency | 50/60Hz |
| Rated short-circuit capacity (Icn) | 6kA |
| Rated service short-circuit capacity (Ics) | 6kA |
| Rated insulation voltage (Ui) | 500V |
| Rated impulse withstand voltage (Uimp) | 4kV |
| Tripping mechanism | Thermal-magnetic |
| Applicable standard | IEC/EN 60898-1 |
| Mounting | 35mm DIN rail, TH35-7.5 |
| Terminal connection | Top or bottom wiring |
| Terminal conductor range | 1–25mm² |
| Standard terminal tightening torque | 2.0Nm |
| Mechanical endurance | 20,000 operations |
| Electrical endurance | 10,000 operations |
| Operating temperature | −35°C to +70°C |
| Storage temperature | −35°C to +85°C |
| Maximum recommended altitude | 2,000m |
| Pollution degree | Class II |
| Protection rating | IP20 direct mounting; IP40 inside distribution box |
Series-level values are from CHINT’s published technical documentation; confirm the applicable manual and local product variant before using installation parameters as guaranteed specifications.
CHINT global+2
Overload protection
Thermal tripping helps protect electrical circuits against sustained excessive current and overheating.
Short-circuit protection
A 6kA rated breaking capacity enables interruption of fault currents within the device’s specified rating and operating conditions.
C-curve tripping characteristic
Suitable for selected circuits with moderate inrush current, subject to load characteristics and protection coordination.
Double-pole switching
Provides mechanically linked switching of two poles for compatible two-pole circuit arrangements.
Compact DIN-rail mounting
Designed for standard modular distribution boards and compatible electrical enclosures.
Long operating life
Published series endurance is up to 20,000 mechanical and 10,000 electrical operations.
CHINT global+1
| Marking | Meaning |
|---|---|
| NXB-63 | CHINT MCB product series |
| C | C-type tripping characteristic |
| 63 | 63A rated current |
| 2P | Double-pole configuration |
| 6000 | 6,000A / 6kA breaking-capacity marking |
| 400V~ | AC voltage marking |
| 814098 | CHINT catalogue reference shown for this variant |
Important: The number 63 in NXB-63 identifies the series, while C63 identifies the 63A C-curve variant.
CHINT’s product catalogue identifies the 2P C63 6kA model as reference 814098.
chintglobal.com+1
This MCB may be considered for appropriately designed circuits in:
Residential and commercial distribution boards.
Small industrial electrical distribution panels.
Sub-distribution boards and feeder circuits.
Auxiliary power distribution systems.
Compatible electrical control panels.
General-purpose AC distribution circuits.
Suitable equipment and machinery supply circuits.
Final selection must account for actual load current, conductor ampacity, prospective fault current, ambient temperature, installation method, and required disconnection time.
Mount the breaker on a compatible 35mm DIN rail.
Isolate the incoming supply and verify the circuit is de-energised before installation.
Follow CHINT’s instructions for conductor preparation, cable cross-section and terminal tightening torque.
Check that the prospective short-circuit current does not exceed the applicable 6kA breaking capacity.
Coordinate the 63A rating with the connected load and cable ampacity.
Confirm the two-pole arrangement and wiring polarity against the circuit design.
Test the installation and protective-device coordination before energisation.
Installation and maintenance should be carried out by a qualified electrical professional.
Protection clarification: An ordinary MCB provides overload and short-circuit protection; it does not provide earth-leakage protection. Use an appropriately selected RCCB/RCD or RCBO where required.
Q1. What does C63 mean on the CHINT NXB-63 MCB?
C indicates the C-type tripping characteristic, while 63 indicates the rated current of 63A.
Q2. What does 2P mean?
2P means the circuit breaker has two mechanically linked poles, designed to switch two conductors together.
Q3. What is the breaking capacity of this MCB?
The pictured variant is marked 6000, representing a rated short-circuit breaking capacity of 6kA.
Q4. Is the CHINT NXB-63 suitable for three-phase applications?
This particular model is a 2-pole breaker. It should not be substituted for a three-pole or four-pole breaker where the circuit design requires those configurations.
Q5. Does this MCB protect against earth leakage?
No. It provides overcurrent and short-circuit protection. Earth-leakage protection requires a separate suitable protective device.
Q6. Can it be installed in a standard distribution board?
It is designed for 35mm DIN-rail mounting, provided the distribution board has sufficient space and is compatible with the product’s electrical ratings.
Q7. What is its rated service life?
CHINT publishes up to 20,000 mechanical operations and 10,000 electrical operations for the NXB-63 series.
Q8. Where can I purchase the CHINT NXB-63 C63 2P MCB in Pakistan?
Contact VITS – Versatile Industrial Trading & Services for product availability, pricing, technical assistance and project-specific supply.
These variants belong to the same product family. Confirm their exact catalogue references and availability before listing them as stocked products.
NXB-63 C10 2P 6kA
NXB-63 C16 2P 6kA
NXB-63 C20 2P 6kA
NXB-63 C25 2P 6kA
NXB-63 C32 2P 6kA
NXB-63 C40 2P 6kA
NXB-63 C50 2P 6kA
NXB-63 C63 2P 6kA
SEO page title
CHINT NXB-63 C63 2P 6kA MCB | 63A Circuit Breaker – VITS
Suggested URL slug
chint-nxb-63-c63-mcb-2-pole-6ka
Meta description
Buy CHINT NXB-63 C63 2-Pole 63A MCB with 6kA breaking capacity from VITS Pakistan. Explore technical specifications, applications and electrical protection solutions.
Focus keyword
CHINT NXB-63 C63 2P MCB
Secondary keywords
CHINT 63A double-pole MCB
CHINT 6kA circuit breaker
NXB-63 C63 400V
2-pole miniature circuit breaker Pakistan
CHINT MCB supplier Pakistan
Recommended product image filename
CHINT_NXB-63_C63_2P_6kA_MCB_Product_Image_1000x1000.png
Image alt text: CHINT NXB-63 C63 2-pole 63A 6kA miniature circuit breaker.
Suggested product categories
Electrical Products
Circuit Protection
Miniature Circuit Breakers (MCB)
CHINT MCBs
Manufacturer documentation: CHINT NXB-63 official product page · CHINT product catalogue · CHINT NXB-63 technical datasheet.
The following commercial fields should be filled in by VITS; I have not invented them.
| Website field | Status |
|---|---|
| Selling price (PKR) | Required |
| Stock availability | Required |
| Warranty period | Confirm with supplier |
| Country of origin | Confirm product batch |
| Manufacturer reference | 814098 |
| Product condition | Confirm new/original |
| Delivery and return policy | Link VITS policy |
| Product datasheet PDF | Attach official current version |
| Parameter | Specification |
|---|---|
| Product Type | Miniature Circuit Breaker (MCB) |
| Breaking Capacity | 6kA |
| Compliance Standard | IEC 60898-1 |
| Certification | CE |
| Protection | Overload & Short Circuit |
| Rated Current (In) | 1, 2, 3, 4,6,10, 16, 20, 25, 32, 40, 50, 63 Amps |
| Rated Frequency | 50/60Hz |
| Tripping Characteristics | Type B, C, D |
| Number of Poles | 1P, 2P, 3P, 4P |
| Rated Impulse Withstand Voltage (Uimp) | 4kV |
Key Features
Reliable overload and short-circuit protection.
Available in multiple current ratings and pole configurations.
Suitable for residential, commercial and industrial applications.
Reviews
There are no reviews yet.