Tesla, Mid-Circuit Interrupter High Current (MCI-2), 1879359-15-B

The Tesla Mid-Circuit Interrupter (MCI-2) High Current (1879359-15-B) is a Second Generation (Gen 2) PV Rapid Shutdown (RSD) device designed for high-current solar modules. It ensures safety compliance by enabling quick, module-level de-energization for Tesla Powerwall 3, Powerwall+, and Tesla Solar Inverters.

Key Product Details:

• Variant: High Current MCI-2 (19A).
• Part Number: 1879359-15-B.
• Max Input Current (ISC): 19 A.
• Nominal Input Current (IMP): 15 A.
• Max System Voltage: 1000 V DC.
• Power Consumption: 7 Watts.
• Compatibility: Designed for high-current PV modules in tandem with Tesla Inverters.
• Connectors: Integrated MC4 or MC4-EVO2 connectors.
• Enclosure: NEMA 4X / IP65 rated for outdoor, roof-mounted installation.
• Code Compliance: NEC Article 690 (Rapid Shutdown) and UL3741 certified.

These units act as switches, allowing the inverter to rapidly shut down DC voltage in the array to ensure safety for firefighters or during maintenance.