LS Electric 0629039663 BK63H miniature circuit breaker, 4-pole, B-curve, 63A rating, 6kA interrupting capacity at 480Y/277VAC. UL1077 recognized for supplementary protection. DIN-rail mount, thermal-magnetic trip unit for reliable overload and short-circuit protection in branch circuit applications.

Miniature Circuit Breakers The **LSIS 0629039663 BK63H 4P B63A 6KA 480Y/277VAC UL1077** is a high-performance miniature circuit breaker designed for residential, commercial, and industrial applications. This reliable circuit protection device ensures the safety and integrity of electrical systems by effectively interrupting electrical faults while maintaining operational efficiency. ## Key Features • **Four Poles (4P)**: Provides comprehensive protection for three-phase systems, ensuring that all phases are disconnected in the event of a fault. • **Rated Current (B63A)**: Capable of handling a maximum rated current of 63 Amperes, suitable for various electrical loads and applications. • **Breaking Capacity (6KA)**: Offers a high breaking capacity of 6 kiloamperes, ensuring effective disconnection during short-circuit conditions to safeguard the electrical system. • **Voltage Rating (480Y/277VAC)**: Designed to operate efficiently at a voltage rating of 480Y/277VAC, making it versatile for different electrical environments. • **UL 1077 Certification**: Complies with UL 1077 standards, ensuring adherence to safety and performance requirements for supplementary protectors. ## Applications • **Commercial Electrical Systems**: Ideal for protecting circuits in commercial buildings, preventing overloads and short circuits. • **Industrial Equipment**: Suitable for use in industrial automation and machinery, providing reliable protection for sensitive equipment. • **Residential Installations**: Perfect for residential electrical panels, ensuring safety and compliance with electrical codes. • **Compatibility**: Compatible with LSIS automation solutions and various electrical infrastructures, enhancing system performance. ## Benefits • **Enhanced Safety**: Provides reliable circuit protection, minimizing the risk of electrical fires and equipment damage. • **Durability and Reliability**: Built with high-quality materials and engineering, ensuring long-lasting performance in demanding environments. • **Easy Installation**: Designed for straightforward installation in standard electrical panels, reducing downtime during setup. • **Operational Efficiency**: Maintains system integrity while allowing for quick recovery from faults, ensuring minimal disruption to operations. --- *Product information compiled with AI assistance for reference purposes.*