YUANKY Black Plug-in Type Miniature Circuit Breaker is a high-performance modular protection device designed for fast installation and reliable circuit safety, fully compliant with BS 3871 Part 1 standards. Available in HQP plug-in and QC cable-in/cable-out configurations, it supports current ratings from 10A to 100A (including popular 20A and 40A models) and voltage up to 240/415V AC, with 1-pole, 2-pole and 3-pole options. Calibrated at 40℃ (50℃ calibration available), it delivers consistent performance across different temperature environments.

This MCB adopts a thermo-magnetic design for dual protection: thermal protection against sustained overloads and magnetic protection against instantaneous short circuits, with an interrupting rating of 10kA. Its 25mm (1-inch) modular structure saves valuable cabinet space, while the plug-in installation enables quick and tool-free replacement, minimizing downtime during maintenance. The toggle handle clearly indicates ON, OFF and TRIPPED positions, and all multi-pole models feature an internal common trip mechanism for simultaneous disconnection. All ferrous metal parts are corrosion-resistant plated, with no internal aluminum components, ensuring long-term durability. Each pole is equipped with AB DE-10N arc extinguishers and a steel frame structure to safely suppress dangerous arcs.

Widely applied in residential, commercial and industrial power distribution systems, this black MCB serves as both main breakers and branch circuit protectors. It is ideal for single-family homes, apartment buildings, offices, retail stores and small factories to protect lighting circuits, power outlets and general electrical equipment. Its HACR rating makes it suitable for heating, air conditioning and refrigeration systems. It is also extensively used in OEM electrical equipment manufacturing and electrical system upgrades for new construction and renovation projects.

With reliable performance, easy installation and flexible OEM customization options, YUANKY plug-in MCB provides a cost-effective circuit protection solution for global electrical contractors, distributors and equipment manufacturers.