MCB 3P C-Curve, 6kA

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

The CHINT NXB-63G-3P is a compact and reliable miniature circuit breaker designed for the protection of three-phase electrical systems. It provides dependable overload and short-circuit protection, ensuring safe operation of connected equipment in commercial, industrial and renewable-energy installations.

Key Features

• 3-pole configuration for balanced protection of three-phase circuits.
• Thermal-magnetic trip unit for accurate and consistent fault response.
• Modern, compact design suitable for new DB boards and system upgrades.
• Clear ON/OFF indication with smooth, reliable switching action.
• DIN-rail mounted for quick installation and clean panel layouts.
• High-quality housing designed for durability and long-term use.

Typical Applications

• Main and sub-distribution boards.
• Pumps, fans, compressors and general three-phase machinery.
• AC distribution on solar inverter systems.
• Workshops, factories and commercial buildings.
• Backup power and generator DBs.

Installation Notes

• Mount on a standard 35 mm DIN rail inside an approved enclosure.
• Ensure correct phase wiring (L1, L2, L3) for proper circuit protection.
• Use conductors and lugs appropriate for the breaker’s frame size.
• Follow torque settings and manufacturer wiring guidelines.

The NXB-63G-3P offers dependable three-phase protection in a compact and installer-friendly design, making it a trusted choice for professional electrical installations.