MCB 3P D-Curve, 6kA

CHINT NXB-63G-3P – 3-Pole Miniature Circuit Breaker

The CHINT NXB-63G-3P is a dependable 3-pole miniature circuit breaker designed for safe and accurate protection of three-phase electrical systems. It provides reliable overload and short-circuit protection while ensuring full isolation of all three phases, making it suitable for commercial, industrial and renewable-energy applications.

Key Features

• 3-pole protection for balanced three-phase circuits.
• Thermal-magnetic trip mechanism for accurate overload and fault detection.
• Compact DIN-rail design for quick and easy installation.
• Clear ON/OFF indication for improved safety and usability.
• Durable housing engineered for long-term performance.
• Ideal for new installations or DB upgrades.

Typical Applications

• Three-phase distribution boards and sub-DBs.
• Motor loads, pumps, fans and HVAC equipment.
• Commercial and light-industrial electrical systems.
• PV inverter AC output distribution.
• Backup power and generator circuits.

Installation Notes

• Install on a standard 35 mm DIN rail inside a compliant enclosure.
• Ensure correct phase sequence (L1, L2, L3) during wiring.
• Use appropriate conductor sizes and follow torque settings.
• Coordinate with upstream/downstream protective devices where required.

The CHINT NXB-63G-3P offers reliable, compact and safe protection for three-phase circuits, making it a trusted choice for professional electricians and system installers.