DC PV Protection Box GAVE STM11025P15/2 2 MPPT 1 String 15A 1000V

Product Description

The DC PV Protection Box GAVE STM11025P15/2 2 MPPT 1 String 15A 1000V is a complete and compact solution for direct current protection in photovoltaic installations with two MPPT inverters and one string per MPPT. It integrates, in a single Class II enclosure with IP65 and IK08 protection rating, 15 A gPV fuses for each pole, a general isolator of 25 A–1000 VDC per output, and dedicated PV Type II surge protection devices per MPPT. The result is a ready-to-use outdoor panel, quick to install and focused on reliability, which simplifies the interconnection between the strings and the inverter and ensures selectivity and safe maintenance.

Main Features

• 2E/2S architecture: 2 independent MPPTs with 1 string per MPPT (differentiated input and output +/–).
• gPV fuses 10×38 mm of 15 A per pole and per string for protection against reverse currents.
• General DC isolator 25 A – 1000 VDC for safe operation during maintenance tasks.
• PV Type II surge protection per MPPT (PST31PV cartridges): In 20 kA, Imax 40 kA, Up ≈ 3.6 kV, Uc ≈ 1060 VDC.
• Polycarbonate enclosure, IP65, IK08, double insulation Class II, suitable for outdoor use.
• Compatible with inverters up to 1000 VDC and string current ≤ 15 A.

Advantages or Benefits

• Safety and compliance: gPV fuses, load isolation, and PV Type II SPD in accordance with applicable standards, protecting modules, cabling, and inverter.
• Neat installation: clear distribution per MPPT (MPPT1/MPPT2), accessible terminals, and labeling that reduces field errors.
• Agile maintenance: quick isolation at 1000 VDC and easy replacement of gPV cartridges and surge protectors.
• Outdoor reliability: IP65 and IK08 for operation on rooftops or outdoors with watertightness and impact resistance.
• Sustained performance: SPD coordination and selective protection that minimize downtime due to transients or failures from reverse current.

Purpose or Applications

This box is designed for residential and small commercial installations with two MPPT inverters and a single string per MPPT. It is ideal when a robust DC panel is required that provides gPV fuse, isolator, and PV SPD in a single unit, keeping wiring organized and allowing future inspection tasks without risks. Suitable for pitched or flat roofs, pergolas, and ground-mounted systems where the Voc of the strings does not exceed 1000 VDC and the Isc of each string is ≤ 15 A.

Technical Specifications

Compatibilities

Compatible with string inverters with 2 MPPT and input up to 1000 VDC (Huawei, Growatt, Fronius, SMA, GoodWe, Solis, Deye, etc.), provided that Voc at the minimum project temperature ≤ 1000 VDC and the Isc of the string ≤ 15 A. Suitable for 54/60/72/78 cell modules, sizing the number of panels in series so as not to exceed the voltage limit.

DC PV Protection Box GAVE STM11025P15/2 2 MPPT 1 String 15A 1000V is a professional solution for demanding PV projects: it increases DC side safety, simplifies wiring, and improves installation availability thanks to its combination of gPV fuses, 1000 VDC isolator, and PV Type II surge protectors per MPPT.