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PV string boxes T2 is the series of DC photovoltaic surge protection junction boxes for inverters to IEC/EN standard. With surge protection type 2, such boxes are ready for installation and just need to be connected in parallel upstream of residential and lite comercial string inverters of several MPP trackers, mainly 1000Vdc rooftop installations. Available with MC4 or cable gland connectors and for one and two MPP tracker applications. Please consult for availability and models, for instance 5 pole and 8 pole SPDs.

Mersen’s Surge Trap STMT Series features low voltage surge protective devices suitable for both AC and DC voltage applications. This series is ideal for the protection of controls, power supplies, communication systems, and other sensitive equipment. With a slim design, these DIN-rail mount SPDs are ideal for limited space applications. The series is suitable for operating voltages of 12-230 VAC and 24-365 VDC and offers an optional dry contact feature for remote monitoring.

Mersen’s TPMOV technology eliminates common failure modes that occur in the field with standard metal oxide varistors. Internally each unit is comprised of a voltage clamping device and a disconnecting apparatus that monitors the status of the metal oxide disk, making the TPMOV surge suppression component a fail-safe device. In the event of an overvoltage breakdown, the metal oxide disc is securely disconnected from the system power by an arc shield. Upon failure, the TPMOV surge suppression component is also equipped with a visual pin indicator as well as a normally open micro-switch, providing remote indication if applicable.

TPMOV7 series surge suppression component: 50% more surge capacity, in the same footprint
The TPMOV7 series is rated for 75kA - 8/20μs peak surge current and is available for maximum continuous operating voltages (MCOV) from 150V to 320VAC.

Mersen surge suppression fuses are specially designed to address the protection of SPD systems. Our surge suppression fuses have been specially designed to withstand 8/20 μSec surge pulses without opening, allowing the SPD system to react to the surge. All surge suppression fuses have a 8/20 μSec surge rating, not a continuous current rating. Under AC short circuit conditions these surge suppression fuses are very current limiting.

Mersen NH fuse-links 800VAC was engineered and designed
specifically for photovotaic systems. gR types are full range breaking
capacity fuse-links and are used to protect cables and equipment.
They can interrupt any fault current, from overloads up to their
breaking capacity, and so can be used alone as protection. They are
the perfect solution of protection when used with DC/800VAC Solar
inverters.
This fuse range is offered along with Mersen 800VAC
Fuse-switch-disconnectors, for a complete fuse-system protection.

Mersen HP6M photovoltaic (PV) fuse series was engineered and designed specifically for the protection of photovoltaic systems. Its enhanced fuse construction makes it ideal for constant temperature and current cycling withstand adding to system longevity. The 600VDC rated HP6M, designed for low minimum breaking capacity capabilities of 1.35 times the fuse rated current value, allows for safe circuit interruption under typical low fault current conditions produced by PV arrays. Protect your off-grid or grid tied PV system from unexpected ground faults and line faults using Mersen's HelioProtection fuse line.