MC4 Fuse Connector

MC4 Fuse Connector is an integrated in-line protection component specially designed for solar PV DC systems. It combines standard MC4 male/female connectors with replaceable gPV DC fuse cores, providing fast-acting protection against overcurrent, short circuit and reverse current for PV module strings. Widely used in residential, commercial PV power stations, inverters and combiner box circuits.

Adopting tinned copper conductors and flame-retardant housing, it reaches IP68 waterproof after mating, with insulation resistance ≥1000MΩ. Rated voltage supports 1000V/1500V DC, current ranges from 2A to 30A.

Features self-locking, tool-free fuse replacement, low contact resistance, high temperature resistance and anti-aging. compatible with 2.5–6mm² PV cables, stable outdoor service life over 25 years, reducing maintenance costs and improving PV system safety and reliability.

Strong Point

• Replaceable fuses, rated current selectable
• 1000V/1500V DC dedicated, high breaking capacity
• Fast-blowing fuse to avoid fire risk, IP67 waterproof

Usage environment:

This MC4 Fuse Connector is specially designed for the harsh outdoor environment of PV DC power generation systems. It can operate stably in an extreme temperature range of -40℃ to +90℃, with excellent UV resistance, aging resistance, rainproof and dustproof performance. The product achieves IP68 high protection level after mating, and can be used for a long time in harsh conditions such as open air, humidity, coastal high salt spray and industrial dust. It is suitable for residential PV, commercial and industrial PV power stations, PV string circuits, inverter DC side and combiner box branches.

The product features excellent insulation performance with insulation resistance ≥ 1000 MΩ, good flame retardant and weather resistance. It can withstand long-term outdoor exposure, rain erosion, high and low temperature cycles and other complex working conditions, ensuring safe and reliable operation in high-altitude, strong sunlight, humid and rainy areas, complying with outdoor installation environment standards for global PV projects.

• Our MC4 Fuse Connector delivers reliable overcurrent, short circuit and reverse current protection for solar PV systems, effectively preventing component damage and safety risks. With IP68 waterproof, UV-resistant and anti-aging design, it operates stably in temperatures from -40℃ to +90℃, suitable for harsh outdoor and coastal environments.
• It features low contact resistance to reduce power loss and high insulation resistance above 1000 MΩ for safe, leakage-free operation. The tool-free design allows fast fuse replacement, while standard MC4 structure ensures wide compatibility and easy installation.
• All products are certified with CE and IEC 62852, using flame-retardant materials for long service life, stable performance and cost-effective operation for various PV power systems.