NXB-63G Moulded Case Circuit Breaker

NXB 63G 32A-2P-MCB-1

NXB 63G 32A-2P-MCB-3

NXB 63G 32A-2P-MCB-5

NXB 63G 32A-2P-Orange Stem-MCB-10

NXB 63G 32A-2P-Orange Stem-MCB-7

NXB 63G 32A-2P-Orange Stem-MCB-9

NXB 63G 32A-3P-MCB-1

NXB 63G 32A-3P-MCB-3

NXB 63G 32A-3P-MCB-5

NXB 63G 32A-3P-Orange Stem-MCB-10

NXB 63G 32A-3P-Orange Stem-MCB-7

NXB 63G 32A-3P-Orange Stem-MCB-9

NXB 63G 32A-4P-MCB-1

NXB 63G 32A-4P-MCB-3

NXB 63G 32A-4P-MCB-5

NXB 63G 32A-4P-Orange Stem-MCB-10

NXB 63G 32A-4P-Orange Stem-MCB-7

NXB 63G 32A-4P-Orange Stem-MCB-9

NXB 63G 32A-MCB-Side-1

NXB 63G 32A-Orange Stem-MCB-Side-3

NXB-63G-Bule Stem-MCB-1

NXB-63G-Bule Stem-MCB-5

NXB-63G-Bule Stem-MCB-Front-7

NXB 63G Bule Stem MCB Side 3

NXB 63G Orange Stem MCB 1

NXB-63G-Orange Stem-MCB-3.

NXB-63G-Orange Stem-MCB-Front-6

NXB-63G-Orange Stem-MCB-Side-4

NXB 63G 32A-2P-MCB-1

NXB 63G 32A-2P-MCB-3

NXB 63G 32A-2P-MCB-5

NXB 63G 32A-2P-Orange Stem-MCB-10

NXB 63G 32A-2P-Orange Stem-MCB-7

NXB 63G 32A-2P-Orange Stem-MCB-9

NXB 63G 32A-3P-MCB-1

NXB 63G 32A-3P-MCB-3

NXB 63G 32A-3P-MCB-5

NXB 63G 32A-3P-Orange Stem-MCB-10

NXB 63G 32A-3P-Orange Stem-MCB-7

NXB 63G 32A-3P-Orange Stem-MCB-9

NXB 63G 32A-4P-MCB-1

NXB 63G 32A-4P-MCB-3

NXB 63G 32A-4P-MCB-5

NXB 63G 32A-4P-Orange Stem-MCB-10

NXB 63G 32A-4P-Orange Stem-MCB-7

NXB 63G 32A-4P-Orange Stem-MCB-9

NXB 63G 32A-MCB-Side-1

NXB 63G 32A-Orange Stem-MCB-Side-3

NXB-63G-Bule Stem-MCB-1

NXB-63G-Bule Stem-MCB-5

NXB-63G-Bule Stem-MCB-Front-7

NXB 63G Bule Stem MCB Side 3

NXB 63G Orange Stem MCB 1

NXB-63G-Orange Stem-MCB-3.

NXB-63G-Orange Stem-MCB-Front-6

NXB-63G-Orange Stem-MCB-Side-4

NXB-63G Moulded Case Circuit Breaker

The NXB-63G Moulded Case Circuit Breaker (MCCB) is designed for reliable overload and short-circuit protection in low-voltage distribution systems. Built to comply with IEC/EN 60947-2, it features rated currents from 1A to 63A, breaking capacity of 6kA, and instantaneous trip settings of 10In and 14.2In. Compact, durable, and precise, the NXB-63G ensures safe circuit isolation and is ideal for residential, commercial, and light industrial applications.

Product Information

Compliance: IEC/EN 60947-2, VC8036, SANS 556-1, SANS 60947-2
Certifications: CE, CB, LoA, RoHS
Function: Overload protection, short-circuit protection, and positive isolation
Rated Current (In): 1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A
Rated Voltage (Ue):
- 230/240V~ (1P)
- 400/415V~ (2P, 3P, 4P)
Frequency: 50/60Hz
Number of Poles: 1P, 2P, 3P, 4P
Instantaneous Short-circuit Current Settings: 10In, 14.2In
Rated Ultimate Short-circuit Breaking Capacity (Icu): 6kA
Service Short-circuit Breaking Capacity (Ics): 6kA
Rated Insulation Voltage (Ui): 500V
Rated Impulse Withstand Voltage (Uimp): 4kV
Mechanical Life: 20,000 operations
Electrical Life: 10,000 operations
Reference Temperature for Thermal Element: 40°C
Temperature Derating:
- 1.0×In at 40°C (reference)
- Derates to 0.96×In at 50°C, 0.91×In at 60°C
Power Consumption per Pole:
- 1–10A: 3W
- 16A: 3.5W
- 20–25A: 4.5W
- 32A: 6W
- 40A: 7.5W
- 50A: 9W
- 63A: 13W
Mounting: TH35-7.5 DIN rail
Protection Degree:
- IP20 (direct mount)
- IP40 (in distribution box)
Applicable Altitude: ≤2000m
Operating Temperature: −35°C to +70°C
Storage Temperature: −35°C to +85°C
Connection Type: Top or bottom entry
Terminal Capacity:
- 1–6A: 1–10mm²
- 10–25A: 2–25mm²
- 32–63A: up to 25mm²
Tightening Torque: 2 N·m (max 2.5 N·m)
Accessories: AX-X1, AL-X1, SHT-X1, OVT-X1, UVT-X1, OUVT-X1

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NXB-63G-MCCB-catalog.pdf

863.77KB

2025-06-11

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2308-NXB-63G-MCB-Manual.pdf

1.59MB

2024-09-22

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2312-NXB-63G-MCCB-CE RoHS Declaration Certificate.pdf

295.44KB

2024-09-22

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2311-NXB-63G-MCCB-CB Certificate1.pdf

266.62KB

2024-09-22

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2311-NXB-63G-MCCB-CE Certificate.pdf

672.61KB

2024-09-22

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2311-NXB-63G-MCCB-ETL EU Certificate.pdf

670.79KB

2024-09-22

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2311-NXB-63G-MCCB-CB Certificate.pdf

830.96KB

2024-09-22

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NXB-63G 2P-MCB-Drawing.pdf

33.79KB

2024-09-22

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NXB-63G 1P-MCB-Drawing.pdf

31.43KB

2024-09-22

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NXB-63G 4P-MCB-Drawing.pdf

47.74KB

2024-09-22

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NXB-63G 3P-MCB-Drawing.pdf

42.43KB

2024-09-22

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FAQs

What protection functions does the NXB-63G MCCB offer?

It provides overload, short-circuit, and isolation protection for low-voltage circuits, ensuring safe and efficient power distribution.

What is the breaking capacity of this MCCB?

The NXB-63G has a rated breaking capacity (Icu) of 6kA, ensuring dependable interruption of fault currents up to this limit.

What environments is this circuit breaker suitable for?

It operates effectively between −35°C and +70°C, making it suitable for residential, commercial, and light industrial installations.

What tripping options are available?

Two instantaneous trip settings — 10In and 14.2In — provide flexible protection for different types of electrical loads.

How long is its service life?

The breaker is rated for 20,000 mechanical and 10,000 electrical operations, ensuring long-term durability and reliability.