MidNite Solar 20A 300VDC DIN Rail Circuit Breaker

The MidNite Solar MNEPV20-300-1PP is a single-pole, polarised DC circuit breaker built for solar photovoltaic and battery installations. Rated at 20A and 300VDC with a 10 kA interrupting capacity, it uses hydraulic-magnetic technology for reliable protection that is independent of ambient temperature. Its medium delay curve, DIN rail mounting, and box terminals make it suited to installers needing accurate, code-compliant DC overcurrent protection across a wide operating range.

Key Features:

• 20A rating at 300VDC, single pole
• Hydraulic-magnetic technology, medium delay curve
• Interrupting capacity 10 kA
• Polarised, positive bottom (300 Vdc per pole)
• 100% rating independent of ambient temperature
• DIN rail mounting, box terminal connection
• Wire size 14-6 AWG (2.5-16 mm²)
• Operating temperature -40°F to 185°F
• UL 489A, IEC 60947-2, CSA C22.2 No. 5-16
• 2.8″ x 0.6″ x 3.9″, 110 g, 5-year warranty

Ideal for protecting PV strings, charge controllers, and battery circuits in off-grid and grid-tied solar systems. Suited to installers who need reliable DC overcurrent protection that can be switched on immediately after tripping, and that integrates with standard DIN rail enclosures and combiner boxes. Order the MNEPV20-300-1PP (also listed as MNEPV203001PP) from Circuit Solar, in stock in Canada and shipped from Red Deer, AB.