The TOMZN TOB1-63H4P AC Miniature Circuit Breaker (MCB) is a high-quality electrical protection device designed to protect circuits from overload and short-circuit faults . With a C-Type tripping curve , this MCB is ideal for applications where moderate inrush currents occur, such as motors, distribution boards, and industrial equipment. This breaker supports 230/400V AC power at 50Hz/60Hz and has a 63A current rating , making it suitable for three-phase plus neutral (4P) electrical systems commonly used in commercial and industrial installations across Pakistan. The fast and reliable tripping mechanism helps prevent damage to wiring, equipment, and connected appliances. Manufactured with durable and flame-resistant materials, the TOMZN TOB1-63H4P offers long service life and stable performance. Its compact DIN-rail design allows easy installation inside standard distribution boards and control panels. Features: Model: TOB1-63H  C 63 Current Rating: 63A Type: Mini Circuit Breaker (MCB) Trip Curve: C Type Voltage Rating: 230/400V~ Frequency: 50Hz/60Hz Pole Configuration: Four poles (4P) Application: Suitable for AC electrical systems Uses: Residential electrical installations Commercial electrical installations Industrial electrical installations Power distribution systems Control panels and switchboards Circuit protection in various applications Specification: Model: TOB1-63H C 63 Current Rating: 63A Type: Mini Circuit Breaker (MCB) Trip Curve: C Type Voltage Rating: 230/400V~ Frequency: 50Hz/60Hz Number of Poles: 4P (Four poles) Breaking Capacity: 6kA Rated Insulation Voltage: 500V Rated Short-Circuit Making Capacity: 4.5kA Rated Frequency: 50Hz/60Hz Rated Impulse Withstand Voltage: 6kV Operating Temperature: -25°C to +55°C Mounting: DIN Rail Standards: IEC 60898 Package Includes: 1 x   TOMZN TOB1-63H4P AC MCB C Type 230/400V~ 50HZ/60HZ 63A Mini Circuit Breaker