16A 2 Pole B Curve 6KA MCB (NB1‑63B2P16)

The 16A 2 Pole B Curve 6KA MCB (Model: NB1‑63B2P16) is a reliable miniature circuit breaker designed to protect electrical circuits from overload and short-circuit faults in both domestic and commercial installations. Made to fit easily into standard consumer units and distribution boards, this 2-pole device disconnects both live and neutral poles quickly and safely if current exceeds safe levels. It is ideal for protecting lighting circuits, socket circuits and other standard 230/400V AC circuits up to 16 amps in homes, offices and light industrial environments.

Constructed to comply with recognised safety standards, this MCB features a B-type tripping curve, meaning it trips rapidly when the current reaches approximately three to five times the rated value. This makes it especially suited for circuits where the load is primarily resistive, such as lighting and small appliances. With a 6 kA breaking capacity, it can safely interrupt fault currents up to 6000 amps, providing dependable protection against short-circuit risks.

The compact, modular design clips onto a 35 mm DIN rail for quick installation and can be connected from the top or bottom, giving flexibility during wiring. The device is made from durable, high-quality insulating materials that deliver consistent performance over time, with IP20 protection to guard against dust and accidental contact. Rated for reliable operation in ambient temperatures from -5 °C to +40 °C, it performs well across typical indoor environments.

This NB1‑63 series MCB also offers multiple connection options suitable for cable and busbar systems and supports terminal capacity for cables up to 25 mm². With a mechanical life of up to 20,000 operations and an electrical life of around 4,000 operations, it stands up to ongoing switching without compromise. Whether you are building a new electrical panel or upgrading your consumer unit, the NB1‑63B2P16 delivers trusted circuit protection at a competitive price.

16A 2 Pole B Curve 6KA MCB (NB1‑63B2P16) – Data Sheet