Features: High-current thermal trip circuit breaker with manual reset switch, suitable for auxiliary DC electrical systems. When the current reaches a predetermined value, the recoverable fuse automatically disconnects to protect the circuit. Circuit protection function: Provides overcurrent protection. Automatically disconnects the circuit when current exceeds the preset threshold, helping prevent damage from excessive current and protecting connected electrical devices. Simple installation: No need to replace internal fuses. Can be easily installed on panels, walls, or vehicles. Designed for straightforward mounting and integration into various setups. Material and wiring: Housing and components constructed from high-impact, flame-retardant, and anti-vibration plastic for durability and long service life. Accepts 0, 2, 4, and 8 gauge wire with adapters for direct connection to 12V or 24V systems. Application: Ideal for overload and short-circuit protection in high-current applications such as automobiles, boats, caravans, horns, dual battery systems, winches, and audio systems. Suitable for use in auxiliary DC electrical systems requiring reliable circuit interruption. Color: Black Material: Plastic Type: 300A Package Contents: 1 x Circuit Breaker Note: Light and display settings may cause slight variations in color representation. Measurement may vary by +/- 1-3cm.