DIHOOL 200A DC Breaker — 250V Battery Disconnect Switch, 25kA Thermal‑Magnetic Protection

This robust DC circuit breaker combines thermal overload sensing with magnetic short-circuit interruption to guard batteries, inverters, UPS units and photovoltaic arrays. Built with high-silver-content contacts for reliable conductivity and long life, the unit is sized for panel mounting and rated for both DC (12–250V) and AC (90–240V) applications. Its compact footprint and screw-mount design make it a practical choice for main power stations and distributed energy systems where safe isolation and dependable trip performance are required.

How does this breaker protect battery and solar systems during overloads?

The DIHOOL breaker uses a thermal element to detect sustained overcurrent and a magnetic element to react instantly to short circuits. This dual-action mechanism helps prevent overheating and limits damage from high fault currents, while providing a manual means to isolate the circuit when maintenance is needed.

• Thermal trip responds to prolonged overcurrent conditions to prevent component overheating.
• Magnetic trip reacts to high-magnitude short-circuit currents for immediate interruption.
• Short-circuit breaking capacity rated at 25kA for high-fault resilience.
• Manual disconnect function for safe isolation during service or emergencies.

What are the electrical ratings and contact materials?

This model is rated for DC voltages from 12V up to 250V and AC operation between 90V and 240V, covering common battery and inverter setups. Contacts are alloyed with significant silver content to ensure low resistance, stable conductivity and extended wear life in repeated switching cycles.

• DC working voltage: 12–250V; AC working voltage: 90–240V.
• Short-circuit breaking capacity: 25kA for high-demand systems.
• Moving contacts contain 30% silver; stationary contacts contain 45% silver for better conductivity.
• Thermal-magnetic trip mechanism for combined protection modes.

How do I install and mount the DIHOOL 200A DC breaker?

The breaker is designed for panel mounting using screw fixings; its compact chassis fits into equipment enclosures and distribution panels. Observe polarity and conductor torque specs when wiring, and ensure clearances and system isolation before installation to maintain safety and reliable operation.

• Overall dimensions: 164 mm x 43 mm x 108 mm for compact panel integration.
• Screw-mount installation on panels or DIN-compatible enclosures.
• Use proper cable lugs and rated fasteners to meet torque recommendations.
• Suitable for photovoltaic arrays, UPS cabinets, battery racks and datacenter power distribution.

What system types and environments is this breaker best suited for?

Designed for direct-current environments and mixed DC/AC service points, the DIHOOL 200A breaker is ideal where dependable isolation and high short-circuit tolerance are needed. It performs well in renewable energy installations, backup power systems and other heavy-duty electrical stations that require a rugged protective device.

• Photovoltaic (PV) string and battery systems in residential and commercial arrays.
• UPS and backup power distribution where fast fault interruption matters.
• Datacenter power bus sections and battery banks needing reliable isolation.
• Main power station panels where long-lasting contact performance is required.

Who is this for? Installers, electricians and system integrators working with solar arrays, battery energy storage, UPS units or datacenter power infrastructure will benefit from the DIHOOL 200A DC breaker. It’s aimed at professionals who need a compact, high-capacity disconnect with combined thermal-magnetic protection and high-quality silver-alloy contacts for consistent conductivity and service life.