MidNite Solar Classic 250-SL MPPT Charge Controller - CLASSIC 250-SLThe MidNite Solar Classic 250 is a high power MPPT charge controller designed for off grid solar, wind, and hydro systems up to 250VDC input. With Arc Fault and Ground Fault protection built in, free web monitoring via the MidNite Local Application, and exclusive HyperVOC for cold climates, it delivers up to 63 amps of charging current for 12V to 72V battery banks. Ideal for large off grid residential, cabin, or remote renewable energy installations,
The MidNite Solar Classic 250 is a high-power MPPT charge controller designed for off-grid solar, wind, and hydro systems up to 250VDC input. With Arc Fault and Ground Fault protection built in, free web monitoring via the MidNite Local Application, and exclusive HyperVOC for cold climates, it delivers up to 63 amps of charging current for 12V to 72V battery banks. Ideal for large off-grid residential, cabin, or remote renewable energy installations, especially those with long wire runs. Made in the USA.
Key Features & Benefits
High Output Current: Delivers up to 63A depending on battery voltage (see power table below).
Wide Battery Voltage Support: Works with 12V, 24V, 36V, 48V, 60V, and 72V battery banks.
Battery Types: Flooded, AGM, Gel, Calcium SMF, Lithium (with BMS), Custom
250VDC Operating Voltage + HyperVOC: Exclusive HyperVOC extends VOC limits for cold climates up to 298V (non-operating safety zone). Ideal for long PV wire runs (over 180 feet) and higher voltage arrays.
Multiple DC Input Sources: Supports solar, wind, and hydro MPPT modes – versatile for any renewable energy source.
Built-In Arc Fault Protection (AFCI): Meets NEC 2014/2017/2020 690.11 requirements with 0.25 second detect and trip speed.
Built-In DC Ground Fault Protection (GFP): Integrated, resettable GFP meets NEC requirements – no external GFP device needed.
Free Web Monitoring: Use the MidNite Local Application or MyMidNite secure service to monitor your Classic remotely.
High Efficiency (98%): Maximizes energy harvest from your renewable source.
Built-In Data Logging: Stores 380 days of daily history and 24 hours of data at 5-minute intervals.
Dual Programmable Auxiliary Outputs: Two AUX outputs for load control, generator starting, low battery disconnect, or logic input from a lithium BMS.
Terminals Rated for 75°C: Accepts #14 to #4 AWG copper wire.
5-Year Warranty: Backed by a 5-year standard warranty with an extended service program available.
Made in the USA: Designed and assembled in Arlington, Washington.
Technical Specifications
Maximum Output Current by Battery Voltage
Electrical & Connectivity
Mechanical Specifications
Agency Approvals
Included with Classic 250
Product Documents
Sizing Tool: Online Tool Link
Spec Sheet (Front/Back): Download PDF
User Manual: Download PDF