BY03-63 MCB 4.5KA Miniature Circuit Breaker

Product Overview

• The BY03-63 series 4.5kA miniature circuit breaker (MCB) is a high-performance device designed to protect electrical systems from overloads and short circuits. With a rated current of up to 63A and pole configurations available in 1P, 2P, 3P, and 4P, it is suitable for a wide range of applications, including residential, commercial, and industrial environments. Operating at a rated voltage of 240V for single-phase systems and 415V for three-phase systems, the MCB supports a frequency range of 50/60Hz, ensuring compatibility with global standards.
• One of the key features of the BY03-63 series is its flame-retardant plastic housing, which provides enhanced safety by minimizing fire risks in case of extreme conditions. This robust casing also protects internal components from external mechanical damage, ensuring the device's reliability and longevity. The built-in indicator window offers a convenient way to check the breaker's operational status at a glance, streamlining maintenance and monitoring processes.
• The MCB's advanced trip mechanism ensures rapid and reliable response to overload and short-circuit faults, effectively preventing damage to circuits and connected devices. Its compact design facilitates easy installation and integration into electrical panels, optimizing the use of space while maintaining a clean and organized layout.
• Engineered to meet international safety and performance standards, the BY03-63 series delivers consistent, reliable, and durable protection for modern electrical systems. Combining high breaking capacity, enhanced safety features, and user-friendly design, it is an ideal choice for professionals and end-users seeking a dependable circuit protection solution. 

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