TOMZN TOB7Z-63 4P 63A 1200V DC Miniature Circuit Breaker (MCB)

TOMZN TOB7Z-63 4P DC Miniature Circuit Breaker (MCB) is designed to provide overload and short-circuit protection for compatible direct-current (DC) electrical distribution systems and solar photovoltaic (PV) installations. The breaker features a four-pole configuration with a rated current of 63A and a marked voltage rating of 1200V DC, making it suitable for compatible high-voltage DC electrical applications. With a rated ultimate short-circuit breaking capacity (Icu) of 6kA, the breaker is designed to interrupt fault currents within its specified electrical ratings, helping protect connected wiring and electrical equipment. The four-pole construction provides coordinated switching of multiple DC conductors, supporting high-voltage DC circuit protection according to the manufacturer's specified wiring configuration. Its integrated circuit protection mechanism automatically disconnects the electrical circuit during overload or short-circuit conditions. The breaker features a common manual ON/OFF operating handle, visual switching indicators and screw-terminal connections for convenient electrical operation and maintenance. Its compact modular construction makes it suitable for installation inside compatible solar PV combiner boxes, DC distribution boards and electrical protection panels. The TOMZN TOB7Z-63 DC breaker is suitable for solar PV string protection, compatible high-voltage DC distribution and other DC applications where the installation requirements match the breaker specifications. The device is marked with IEC/EN 60947-2, the standard covering low-voltage circuit breakers. For safe operation, the manufacturer's polarity markings, required series-pole arrangement and DC wiring diagram must be followed during installation.

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