DC PV Protection Box GAVE STM11025P20/2 2 MPPT 1 String 20A 1000V

Product Description

The DC PV Protection Box GAVE STM11025P20/2 2 MPPT 1 String 20A 1000V is a direct current panel designed for inverters with two trackers (MPPT) and one string for each. It combines in a single IP65 IK08 and Class II enclosure the 20 A gPV fuses, the main 40 A 1000 VDC isolator, and Type II PV surge protection devices per MPPT. With this 2E/2S architecture (two independent inputs and two independent outputs), a safer, more organized, and easier-to-maintain installation is achieved, perfect for residential rooftops and small commercial applications.

Main Features

• Topology 2 MPPT × 1 string/MPPT (2 inputs / 2 outputs differentiated by MPPT).
• gPV fuses 10×38 mm of 20 A per pole and per string to prevent reverse currents.
• Multipole DC isolator 40 A – 1000 VDC for safe operation and maintenance.
• Type II PV surge protection per MPPT (PST31PV cartridges): In 20 kA, Imax 40 kA, Up ≈ 3.6 kV, Uc ≈ 1060 VDC.
• Polycarbonate enclosure IP65, IK08, and double insulation Class II, suitable for outdoor use.
• Terminals and internal distribution designed for PV cable of 4–6–10 mm² and simple grounding.

Advantages or Benefits

• Quick and clean installation: clear MPPT1/MPPT2 wiring, marked polarities, and easy access to fuses and SPD.
• Maximum DC side safety: load isolation, selective gPV protection, and coordinated PV SPD.
• Improved availability and service life: transients are mitigated and the risk of damage to modules and inverter is minimized.
• Agile maintenance: simple replacement of gPV cartridges and surge protectors; visual inspection of SPD status.
• Outdoor robustness: IP65 and IK08 ensure watertightness and impact resistance on rooftops or outdoors.

Purpose or Applications

Indicated for residential self-consumption and light commercial installations with inverters of 2 MPPT and one string for each, where the Voc of the strings does not exceed 1000 VDC and the Isc is ≤ 20 A. It is ideal in systems with high-current modules (e.g., N-type or bifacial) and when isolation, gPV fuses, and PV SPD are required in a single box, keeping the panel organized and ready for audits and maintenance.

Technical Specifications

Compatibilities

Compatible with string inverters of 2 MPPT and input up to 1000 VDC (Huawei, Growatt, Fronius, SMA, GoodWe, Solis, Deye, etc.), provided that Voc_total at the minimum project temperature is ≤ 1000 VDC and the Isc of each string is ≤ 20 A. Suitable for modules of 54/60/66/72/78 cells, sizing the number in series to respect voltage and current limits.

DC PV Protection Box GAVE STM11025P20/2 2 MPPT 1 String 20A 1000V is a professional solution for demanding PV projects: it increases DC side safety, simplifies wiring, and improves installation availability thanks to the combination of 20 A gPV fuses, 40 A/1000 VDC isolator, and Type II PV SPD per MPPT.