DC disconnect rating check

All defaults are invented: a module with Voc 41.0 V, Isc 13.9 A and Voc coefficient -0.27 %/K, a design low of -10 °C, and a switch rated 600 V and 20 A. The current factor of 1.25 is an assumption (see the Voc and Isc page); use the factor your adopted code and AHJ require. Replace every value with your datasheets.

Modules in series

Strings in parallel at this switch

Design low temperature (°C)

Current factor

Switch voltage rating (V DC)

Switch current rating (A DC)

AHJ printed voltage limit (V, optional)

Module data (change to your datasheet)

Voc at STC (V)

Isc at STC (A)

Voc coefficient (%/K, negative)

Design aid only. It compares two numbers with two ratings. The switch must also be DC-rated, listed and accepted by your AHJ and the inverter maker.