Solar PV Protection

Explore our comprehensive range of European standard DC fuses designed for various critical applications.
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DC Fuse In PV Application Challenges We Help You Solve
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High DC Voltage Stress in 1500V PV Systems

1500V DC photovoltaic systems place extreme demands on fuse performance. Standard fuses often experience overheating, rising power loss, and performance degradation under continuous high-voltage stress, leading to unreliable protection.

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Extreme Temperature Cycling in PV Arrays

PV installations are exposed to harsh day-night temperature fluctuations (-40°C to 90°C). Thermal cycling can cause internal insulation fatigue, micro-cracks, and weakened contact stability inside the fuse.

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High Fault Current & DC Arc Suppression Requirements

DC arcs are difficult to extinguish and can cause severe damage in high-current PV strings. Many general-purpose fuses fail to safely interrupt large DC fault currents, resulting in terminal damage or string shutdowns.

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Power Loss & Efficiency Challenges in Large PV Plants

Common issues include:
Excessive temperature rise inside combiner boxes
Derating of PV strings due to fuse power loss
Reduced overall energy yield

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AITE Solution
  • Low-power-loss fuse element design
  • Silver-alloy fuse link for improved high-voltage stability
  • Fully tested to UL2579 / IEC60269-6
  • Stable breaking performance even under high-temperature conditions
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AITE Solution
  • High-temperature ceramic body with reinforced end-cap structure
  • Verified for more than 2,000 thermal cycles
  • Long-term durability in outdoor environments
  • Reliable long-life performance without premature aging
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AITE Solution
  • Breaking capacity up to 50kA
  • CFD-optimized fuse link geometry for rapid arc suppression
  • Reduced arc propagation risk to protect inverters and combiner boxes
  • Designed for high-capacity and high-fault-current PV systems
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AITE Solution
  • Low-power-loss fuse link reduces energy loss by 18%–30%
  • Lower temperature rise improves module and inverter efficiency
  • Helps prevent thermal alarms and unexpected shutdowns
  • Supports high-current PV strings
Combiner Box:One-stop convergence solution from rooftop to ground-mounted power station
ATPV-30D FUSE
DC1000V
ATSPV-C40 SPD
DC1000V
ATB-63 PV MCB
DC500/800/1000V
ATPV-63LDL FUSE
DC1500V
ATDM5DC MCCB
DC1500V
Featured High-Capacity PV Fuse Series
RT16-3(NH3) 800VAC HRC Square Blade Fuse
RT16-3(NH3)
  • Voltage:800Vac
  • Current:315A-630A
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ATPV-30D 800VAC 10x38mm PV Fuse Holder
ATPV-30D 10x38mm
  • Voltage:800Vac
  • Current:32A ampere ratings
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ATPV-30D 800VAC 10x38mm PV Fuse Holder With Indicator
ATPV-30DL 10x38mm
  • Voltage:800Vac
  • Current:32A ampere ratings
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ATPV-63D 800VAC 14x51mm PV Fuse Holder
ATPV-63D 14x51mm
  • Voltage:800Vac
  • Current:63A ampere ratings
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ATPV-125D 800VAC 22×58mm PV Fuse Holder
ATPV-125D 22*58mm
  • Voltage:800Vac
  • Current:125A ampere ratings
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ATPV-30D 800VAC Fuse Base 10x38mm PV Fuse Holder
ATPV-30D 10x38mm
  • Voltage:800Vac
  • Current:32A ampere ratings
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NEW ATPV-30DL 800VAC 10x38mm PV Fuse Holder With Indicator
NEW ATPV-30DL 10x38mm
  • Voltage:800Vac
  • Current:32A ampere ratings
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Sist101 800VAC NH00 PV Fuse Holder
NH00 Sist101
  • Voltage:800Vac
  • Current:160A ampere ratings
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Sist201 800VAC NH1 PV Fuse Holder
NH1 Sist201
  • Voltage:800Vac
  • Current:250A ampere ratings
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Sist401 800VAC NH2 PV Fuse Holder
NH2 Sist401
  • Voltage:800Vac
  • Current:400A ampere ratings
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Sist601 800VAC NH3 PV Fuse Holder
NH3 Sist601
  • Voltage:800Vac
  • Current:630A ampere ratings
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HR17 Fuse Switch Disconnector
HR17
  • Voltage:800Vac
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Why Leading PV Fuse Manufacturers Choose AITE
· Higher System Eficiency
· Superior Reliability
· Global Market Read
· Extended Lifetime

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