IP65 Circuit Breaker DIN Rail Box: Made of PC+ABS material, featuring high impact resistance, high heat resistance, good dimensional stability, V1 flame retardancy, acid and alkali resistance, solvent resistance, and UV resistance. A transparent cover allows easy viewing of the circuit breaker status. The three-way box design provides more space than a two-way box, facilitating wiring and installation.Miniature Circuit Breaker: Features a built-in arc-extinguishing magnet for powerful arc extinguishing capability; flame-retardant housing; silver contacts; and ample pure copper coils to ensure high quality.Multiple Protections: Isolation, short-circuit protection (48-400VDC or 90-400VAC), overload protection, C-type tripping, and thermal-magnetic tripping, suitable for 12V-400V DC or 90-400V AC systems.Equipped with two screws for easy installation and four crimp terminals to ensure secure wiring. Four rubber plugs are used to seal the four screw holes on the box cover to prevent screw rust and enhance waterproofing. One roll of insulating tape is used to seal cable joints when the cable is too thin.Wide range of applicable cables: Two IP68 cable joint options are available. The single-hole cable joint is suitable for two-core wires with diameters of 9-16 mm/0.35-0.63 inches. The double-hole cable joint is suitable for wires with diameters of 4-6 mm/0.15-0.23 inches.This circuit breaker box is suitable for applications such as photovoltaic solar panel arrays, solar charge controllers, batteries, power inverters, household lighting, and small motor control.Non-polarity circuit breakers eliminate the need to distinguish polarity, allowing bidirectional connection, simplifying installation and reducing wiring errors. They are particularly suitable for applications where polarity may be reversed, such as reversible motors, battery charge/discharge switching, and bidirectional current protection, including: electric vehicle charging/discharging circuits, solar power systems (battery current direction reversed), and industrial reversible drive systems.