NB1-63B1P25 25A 1 Pole B Curve 6kA MCB
Ensure the safety and reliability of your electrical circuits with the Chint NB1-63B1P25 25A 1 Pole B Curve 6kA MCB. Designed to provide precise protection for residential and light commercial installations, this miniature circuit breaker safeguards your wiring against overloads and short circuits, preventing costly damage and downtime.
Part of the trusted NB1-63 Series, this 1 Pole MCB is rated at 25 amps with a B Curve tripping characteristic, making it perfect for circuits with moderate inrush currents, such as lighting and general-purpose sockets. The 6kA breaking capacity ensures it can handle high fault currents safely, providing peace of mind for homeowners, electricians, and building managers alike.
Its compact design allows for easy DIN rail installation, optimising space in consumer units and panel boards. Crafted from high-quality, durable materials, the NB1-63B1P25 offers long-term performance and consistent operation, even under demanding conditions. The MCB’s intuitive design ensures quick installation and reliable protection without unnecessary complexity.
Whether you are upgrading your electrical distribution, replacing a faulty MCB, or building a new installation, the NB1-63B1P25 delivers consistent protection that meets modern safety standards. Its robust build, coupled with Chint’s reputation for quality, makes it a reliable choice for both professionals and DIY enthusiasts seeking durable circuit protection.
Stay secure and reduce the risk of electrical faults with a miniature circuit breaker designed to perform when it matters most. With the Chint NB1-63B1P25, your circuits are in safe hands.
Tracked Delivery (Currently 1-3 business days):
- Free over £150.
- £5.99 for orders under £150.
- £5.99 for orders under £50.
Next Business Day Delivery:
- £15 Flat Rate.
Collection:
- Free to collect from our warehouse.
Pre-Order:
- 5-10 Business Days delivery unless otherwise stated.

