Resettable 120 A DC circuit breaker with built‑in on/off isolator, suitable for 12–48 V DC systems and for panel or recessed-mount installations.

• Rating: 120 A — automatic overcurrent thermal circuit breaker for 12 V / 24 V / 48 V DC systems; resettable fuse and manual isolator.
• Type: Thermal overcurrent protection device; manual-break isolator function for safe disconnection.
• Material: Thermoplastic (UL 94 V-0). Operating temperature: -32°C to 82°C (-26°F to 180°F). Storage temperature: -34°C to 149°C (-29°F to 300°F).
• Terminal size: M6. Enclosure: IP67.
• Size: 74 x 48 x 37 mm (2.91 x 1.89 x 1.46 in). Weight: 110 g (3.9 oz).
• International standard ratings: S.A.E. J1625, J1171, UL 1500 — ignition-protected and suitable for marine/automotive use.
• Suited to connecting solar or wind charge controllers, between batteries and off-grid inverter DC inputs, DC power distribution and charging circuits.
• Documents available to download: Time vs Rated Current graph for Photonic Universe 120 A Circuit breaker (CBR120) — https://www.photonicuniverse.com/upload/image/CB_breakers/Circuit_Breaker_Time_vs_current_graph.jpg

Check compatibility with equipment voltage and wiring; install in a dry, ventilated location where the manual isolator can be accessed safely.