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Chint NXB-63 4P C50 Miniature Circuit Breaker – 50A, 6kA Breaking Capacity, Type C Curve, 4 Pole MCB for Heavy Three-Phase + Neutral Circuit Protection
Chint NXB-63 4P C50 Miniature Circuit Breaker – 50A, 6kA Breaking Capacity, Type C Curve, 4 Pole MCB for Heavy Three-Phase + Neutral Circuit Protection
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Product Code: NXB-63-4P-C50
Brand: Chint
Product Type: Miniature Circuit Breaker (MCB)
Pole Configuration: 4 Pole (4P)
Rated Current: 50 Amperes (50A)
Tripping Curve: Type C
Breaking Capacity: 6kA
Compliance Standard: IEC/EN 60898-1
Mounting Type: DIN Rail
Product Overview
The Chint NXB-63 4P C50 MCB is a four-pole miniature circuit breaker engineered for high-capacity three-phase systems with a neutral line. Designed for a 50A current rating, it is suited for demanding applications such as sub-distribution panels, HVAC systems, motors, industrial machinery, and power circuits requiring full isolation.
Its Type C tripping curve ensures stable operation under loads with moderate inrush currents, and its 6kA short-circuit breaking capacity ensures protection under fault conditions. With four poles, it disconnects all live phases plus neutral, ensuring maximum safety.
Key Features
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🔋 50A Rated Current – Ideal for powering heavy-duty equipment and installations
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⚡ 6kA Short-Circuit Protection – Fast and reliable fault isolation
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🔄 Type C Tripping Curve – Handles loads with moderate start-up surges
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🔌 4 Pole Configuration (L1, L2, L3, N) – Full circuit and neutral isolation
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🧲 DIN Rail Mounting – Suitable for most modern electrical distribution boards
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✅ Certified to IEC/EN 60898-1 – Assures global standards for safety and performance
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Chint |
| Series | NXB-63 |
| Rated Current (In) | 50A |
| Voltage Rating (Ue) | 400V AC |
| Number of Poles | 4P (Three Phase + Neutral) |
| Tripping Curve | Type C |
| Breaking Capacity | 6kA |
| Frequency | 50/60 Hz |
| Mounting Type | DIN Rail |
| Operating Temperature | -5°C to +40°C |
| Compliance Standard | IEC/EN 60898-1 |
Typical Applications
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Industrial machinery and motor circuits
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HVAC, refrigeration, and pump systems
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Large commercial and industrial distribution boards
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Three-phase power panels requiring neutral disconnection
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Generator and UPS output protection
Why Choose Chint NXB-63 4P C50?
The NXB-63 4P C50 MCB offers reliable, high-capacity protection for installations where full-phase and neutral isolation is a must. With Chint's proven design and IEC certification, it is a trusted solution for demanding electrical systems in both industrial and commercial environments.
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