Solar DC Protection Devices

Solar DC MCB, Fuse, MCCB, SPD, Disconnectors are the DC Protection devices.

Fuse is for primary Short circuit protection.
SPD is for Over voltage protection.
MCB is for secondary Over current protection.
MCCB is for High capacity over current protection.
Single Pole(SP) DC MCB is for battery over current protection in a offgrid system.
Disconnector is for ON/OFF switching.