TOMZN 4P+4P MTS DC Dual Power Circuit Breaker For PV System
The TOMZN TOB7Z‑63 4P+4P DC Dual Power Manual Transfer Switch with Integrated MCB is manual changeover and protection device designed for solar photovoltaic (PV) systems and other high‑voltage DC applications. It features a 4P+4P configuration that lets you safely switch between two DC power sources (such as a solar array and a battery bank) while ensuring full isolation of both positive and negative poles. Rated for up to 1000 V DC and available in various current options, this device combines manual dual‑power transfer control with built‑in overload and short‑circuit protection, helping safeguard your PV system and extend the life of connected components. Its DIN‑rail mountable flame‑retardant design makes it compact and reliable for use in PV combiner boxes, DC distribution panels, and off‑grid energy systems.












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