DC & Photovoltaic MCBs

DC and photovoltaic MCBs from ABB protect solar strings and DC circuits up to 1500 V DC. The range covers 4-pole S800 PV breakers from 5 A to 100 A, with about 14 products. Stoklink ships worldwide from Turkey and quotes project volumes on request.

What's in this range

• ABB S804PV-SP breakers, 4P, 1500 V DC, 5 kA.
• Rated currents from 5 A up to 100 A.
• Sold on request: stock status is confirmed with each quote.
• Back to all MCBs for AC breakers.

How to choose

• Voltage: the DC rating must cover the open-circuit string voltage, with margin for low temperatures.
• Rated current: size from the string current and the cable.
• Poles: 4P devices connect poles in series to raise the DC breaking voltage.

FAQ

Can an AC MCB be used on a DC circuit?

Not unless it is rated for DC. DC arcs do not self-extinguish at current zero, so breakers need a DC rating.

What does 1500 V DC mean on an S800 PV breaker?

It is the maximum DC system voltage the breaker is rated to interrupt.

Can you supply DC breakers for solar projects abroad?

Stoklink ships worldwide from Turkey on EXW terms. Lead time depends on distributor stock, so request a quote with your part numbers and quantities.