Photovoltaic and DC circuit protection – DC fuses, disconnectors and SPDs

Why DC circuits require specialized equipment

Direct current behaves differently than alternating current, especially regarding electric arc extinguishing.

Basic protections

• DC fuses where required.
• DC disconnectors.
• SPDs suitable for DC.
• Proper grounding and equipotential bonding.

Important

Do not use AC components in DC applications arbitrarily. Equipment must be appropriately certified for the voltage and current of the DC circuit.