50A 1 Pole B Curve 6KA MCB (NB1‑63B1P50)

The 50A 1 Pole B Curve 6KA MCB (NB1‑63B1P50) from Chint is a reliable miniature circuit breaker designed to protect electrical circuits from overload and short‑circuit faults in domestic, commercial and light industrial installations. Compact and robust, this single‑pole breaker fits neatly into distribution boards and control panels, giving you trusted protection where it matters most.

Made with high-quality materials and a durable thermoplastic body, this MCB offers dependable performance at a maximum rated current of 50 amps and a breaking capacity of 6 kiloamps, meeting standard safety requirements. The B-curve characteristic means the breaker trips quickly on lower levels of overcurrent, making it ideal for typical residential circuits such as lighting, sockets and general power feeds where sensitive protection is needed.

Installation is simple with a DIN-rail mountable design and standard 18 mm modular width that fits most UK consumer units. The sturdy construction includes an IP20 protection rating, helping guard internal components while allowing smooth operation in everyday environments. This MCB also supports a wide temperature range and is compliant with international safety standards, ensuring long-lasting service and peace of mind for installers and end users alike.

Whether you are wiring a new property, upgrading an existing panel or replacing a worn-out breaker, the Chint NB1‑63B1P50 delivers dependable circuit protection with consistent performance and proven quality.

50A 1 Pole B Curve 6KA MCB (NB1‑63B1P50) – Data Sheet