The Tesla Mid-Circuit Interrupter (MCI) is used within PV strings and arrays to meet the Rapid Shutdown requirements of NEC Article 690.12.

MCI-2 and MCI-2 High Current are referred to collectively as MCI-2, as the only differences between the two variants are the I MP and I SC ratings. 1 Maximum System Voltage is limited by Tesla Solar Inverter to 600 V DC. 2 Maximum Disconnect Voltage is the maximum voltage allowed across each MCI in the open position (Rapid Shutdown Initiated).

The Tesla Mid-Circuit Interrupter (MCI) devices provide essential rapid shutdown functionality for solar photovoltaic systems, meeting NEC Article 690 requirements.

2018年5月17日 · In February 2022, Tesla came out and replaced the MCI units to help produce more energy with less direct sunlight. This summer my peak energy production dropped to about 10kWh from 13+, and I barely produced any additional credit due to this.

What is an MCI? The Tesla Mid-Circuit Interrupter (MCI) is used within PV strings and arrays to meet the Rapid Shutdown requirements of NEC Article 690.12 (2017 and 2020 editions). When paired with Tesla inverter products, solar array shutdown is initiated by any loss of AC power or system shutdown switch activation. What does an MCI do?

2024年9月29日 · For every 3rd PV panel I installed the MCI-2 (RSD from Tesla). For sanity check I measured the voltage on my string with multimeter and it showed around 21V DC. Is this expected?

2022年3月20日 · Update here: Tesla crew came and replaced all the 12 MCI units with the newer versions (they kept the same number of units). One of the units was bad, it was clear a fuse blew just by looking at the unit.

MCI-1 works like module-level rapid shutdown… This is for the mid-circuit-interrupter made by Tesla. For Delta’s MCI, go to MCI (Middle Circuit Interrupter).

Mid Circuit Interrupter Specifications (P/N MCI-2) PV Rapid Shutdown Equipment (PVRSE) Pre-Installation Guidance. Registering Tesla Solar Inverter; Installation Considerations and Requirements; Preparing for Installation. In the Tesla Solar Inverter Box. In the Solar Inverter Accessory Bag; Required Tools; Required Supplies; Tesla Solar ...

These devices integrate seamlessly with Powerwall systems to ensure rapid solar array shutdown during loss of AC power, enhancing safety for emergency responders and maintenance personnel. The MCI series includes two models: MCI-1 supporting up to 600V DC systems and MCI-2 designed for 1000V DC applications.