Chint NXB-63 4P C63 Miniature Circuit Breaker – 63A, 6kA Breaking Capacity, Type C Curve, 4 Pole MCB for Maximum Load Protection in 3-Phase + Neutral Systems

Product Code: NXB-63-4P-C63
Brand: Chint
Product Type: Miniature Circuit Breaker (MCB)
Pole Configuration: 4 Pole (4P)
Rated Current: 63 Amperes (63A)
Tripping Curve: Type C
Breaking Capacity: 6kA
Compliance Standard: IEC/EN 60898-1
Mounting Type: DIN Rail

Product Overview

The Chint NXB-63 4P C63 MCB is the highest-rated model in the NXB-63 4-pole range, built to provide robust protection for large three-phase loads with a neutral connection. With a 63A current rating, this breaker is ideal for industrial distribution boards, heavy machinery, HVAC systems, and large commercial installations requiring full disconnection across all conductors.

Its Type C tripping curve handles moderate inrush currents, while the 6kA breaking capacity ensures fast and safe disconnection during fault conditions. The four-pole configuration provides simultaneous isolation of all three phases and the neutral, enhancing electrical safety.

Key Features

• 🔋 63A Rated Current – Maximum capacity for heavy-duty three-phase + neutral circuits

• ⚡ 6kA Breaking Capacity – Protects against short circuits and overloads

• 🔄 Type C Tripping Curve – Ideal for loads with moderate startup surges (e.g., motors, compressors)

• 🔌 4P Full Isolation – Simultaneous disconnection of L1, L2, L3, and Neutral conductors

• 🧲 DIN Rail Mounting – Fast, secure installation in industrial panels

• ✅ Certified to IEC/EN 60898-1 – Compliant with international safety and performance standards

Technical Specifications

Typical Applications

• Industrial distribution boards

• Generator or UPS output protection

• Large three-phase machinery and HVAC systems

• Submain feeders in factories or commercial complexes

• Applications requiring full phase + neutral isolation

Why Choose Chint NXB-63 4P C63?

The NXB-63 4P C63 MCB is engineered for maximum load handling with complete protection and disconnection. Designed for demanding applications, it offers trusted Chint quality, fast fault response, and international standard compliance — making it a top-tier choice for high-load electrical systems.