Mersen Surge Protection Devices (SPD) and DC Fuses safeguard electrical and electronic systems from voltage fluctuations, transient surges, and short circuits. Engineered for residential, commercial, industrial, and renewable energy applications, Mersen SPDs provide high-speed surge suppression, while Protistor® DC fuses ensure fast, precise protection in DC circuits. Maintenance-free, robust, and DIN-rail or plug-in mountable, these devices enhance system reliability, protect sensitive equipment, and ensure operational safety under harsh conditions.
Mersen STP T2 40 1000 Photovoltaic (SPD)
The Mersen STP T2 40 1000 Photovoltaic Surge Protection Device (SPD) is engineered to protect solar PV systems from transient overvoltages, lightning-induced surges, and electrical faults. Offering Type 2 surge protection, it ensures fast, reliable suppression of voltage spikes, safeguarding inverters, solar panels, batteries, and other sensitive components. Maintenance-free, robust, and easy to install, this SPD enhances the safety, reliability, and longevity of residential, commercial, and industrial solar installations, ensuring uninterrupted performance even in harsh environmental conditions.
Mersen STP T2 40 600 Photovoltaic (SPD)
The Mersen STP T2 40 600 Surge-Trap® is a high-performance Type 2 SPD designed for solar PV systems up to 600V DC. It protects solar panels, inverters, and sensitive components from lightning-induced surges, switching operations, and grid disturbances. With 40 kA surge current capacity, low protection level (≤2 kV), and modular replaceable cartridges, it offers reliable, long-term protection. Its robust, corrosion-resistant, and maintenance-free design ensures efficient operation in residential, commercial, and industrial solar installations.
Mersen STP T2 40 320 AC Surge Protection Device (SPD)
The Mersen STP T2 40 320 Surge-Trap® is a high-quality Type 2 SPD designed to protect low-voltage AC power systems up to 320V. It safeguards control panels, distribution boards, and sensitive electronics from lightning strikes, switching surges, and other transient overvoltages. With 40 kA surge current capacity, low protection level (≤1.5 kV), and modular replaceable cartridges, this compact, maintenance-free SPD ensures reliable, long-term surge protection for residential, commercial, and industrial installations.
Mersen Surge-Trap® Pluggable Surge Protective Device
The Mersen Surge-Trap® Pluggable SPD is a high-performance, modular surge protection device designed to safeguard low-voltage electrical systems from transient overvoltages caused by lightning, switching operations, and grid disturbances. Its pluggable cartridge design allows easy replacement without rewiring, while the SPD safely diverts surge currents (up to 40 kA per phase) to the ground, protecting sensitive equipment in residential, commercial, and industrial installations. With visual status indicators, Terra ground monitoring, and compliance with IEC/EN 61643-11 standards, this compact, maintenance-free SPD ensures reliable, long-term protection for distribution boards, data centers, industrial panels, and renewable energy systems.
Mersen GMD-230V Ground Monitoring Device
The Mersen GMD-230V is an advanced DIN-rail mounted ground-resistance monitoring device designed for continuous supervision of electrical earthing systems. It ensures SPDs function correctly and personnel remain safe by measuring earth-loop resistance in real time. Compatible with TT, TNS, and TNC-S systems, it features configurable alerts, robust DIN-rail housing, and multi-voltage support (120/208 V AC & 230/400 V AC). By detecting grounding degradation early, it enhances safety, ensures operational reliability, and enables predictive maintenance for residential, commercial, and industrial electrical installations.
Mersen HelioProtection® HP10M5 – PV-Rated Fuse
The Mersen HelioProtection® HP10M5 is a fast-acting photovoltaic (PV) fuse designed for 1000 V DC, 5 A applications, offering reliable protection for solar power systems. Specifically engineered for PV strings, combiners, inverters, and charge controllers, it safeguards against overcurrents, ground faults, and line faults. With a high interrupting capacity, robust glass-matt-epoxy body, and tin-plated copper terminals, this fuse ensures long-term durability and consistent performance even under extreme temperature variations. UL-listed, gPV-rated, and IEC 60269-6 compliant, the HP10M5 provides dependable, maintenance-free protection for residential, commercial, and utility-scale solar installations, enabling safe and efficient operation of photovoltaic systems.
Mersen HelioProtection® HP10M10 – PV-Rated Fuse
The Mersen HelioProtection® HP10M10 is a 10 A, 1000 V DC fast-acting photovoltaic (PV) fuse designed to provide reliable protection for solar PV systems. Engineered for low-fault currents and high-temperature cycling, it safeguards PV strings, arrays, inverters, and charge controllers against overcurrents and faults. Featuring a robust GMG insulated body, tin-plated copper terminals, and gPV-class fast-acting technology, the HP10M10 ensures long-term durability and consistent performance in extreme environmental conditions. UL-listed, IEC 60269-6 compliant, and RoHS certified, this fuse is ideal for residential, commercial, and utility-scale solar installations, offering maintenance-free, dependable protection for modern photovoltaic systems.
Mersen HelioProtection® HP10M15 – PV-Rated Fuse
The Mersen HelioProtection® HP10M15 is a fast-acting photovoltaic (PV) fuse designed for 1000 V DC, 15 A applications, offering reliable protection for solar power systems. Specifically engineered for PV strings, combiners, inverters, and charge controllers, it safeguards against overcurrents, ground faults, and line faults. With a high interrupting capacity, robust glass-matt-epoxy body, and tin-plated copper terminals, this fuse ensures long-term durability and consistent performance even under extreme temperature variations. UL-listed, gPV-rated, and IEC 60269-6 compliant, the HP10M15 provides dependable, maintenance-free protection for residential, commercial, and utility-scale solar installations, enabling safe and efficient operation of photovoltaic systems.
Mersen HelioProtection® HP10M20 – PV-Rated Fuse
The Mersen HelioProtection® HP10M20 is a 20 A, 1000 V DC fast-acting photovoltaic (PV) fuse designed to provide reliable protection for solar PV systems. Engineered for low-fault currents and high-temperature cycling, it safeguards PV strings, arrays, inverters, and charge controllers against overcurrents and faults. Featuring a robust GMG insulated body, tin-plated copper terminals, and gPV-class fast-acting technology, the HP10M20 ensures long-term durability and consistent performance in extreme environmental conditions. UL-listed, IEC 60269-6 compliant, and RoHS certified, this fuse is ideal for residential, commercial, and utility-scale solar installations, offering maintenance-free, dependable protection for modern photovoltaic systems.
Mersen HelioProtection® HP10M25 – PV-Rated Fuse
The Mersen HelioProtection® HP10M25 is a fast-acting photovoltaic (PV) fuse designed for 1000 V DC, 25 A applications, offering reliable protection for solar power systems. Specifically engineered for PV strings, combiners, inverters, and charge controllers, it safeguards against overcurrents, ground faults, and line faults. With a high interrupting capacity, robust glass-matt-epoxy body, and tin-plated copper terminals, this fuse ensures long-term durability and consistent performance even under extreme temperature variations. UL-listed, gPV-rated, and IEC 60269-6 compliant, the HP10M25 provides dependable, maintenance-free protection for residential, commercial, and utility-scale solar installations, enabling safe and efficient operation of photovoltaic systems.
Mersen HelioProtection® HP10M30 – PV-Rated Fuse
The Mersen HelioProtection® HP10M20 is a 20 A, 1000 V DC fast-acting photovoltaic (PV) fuse designed to provide reliable protection for solar PV systems. Engineered for low-fault currents and high-temperature cycling, it safeguards PV strings, arrays, inverters, and charge controllers against overcurrents and faults. Featuring a robust GMG insulated body, tin-plated copper terminals, and gPV-class fast-acting technology, the HP10M20 ensures long-term durability and consistent performance in extreme environmental conditions. UL-listed, IEC 60269-6 compliant, and RoHS certified, this fuse is ideal for residential, commercial, and utility-scale solar installations, offering maintenance-free, dependable protection for modern photovoltaic systems.
Mersen HelioProtection® HP10M32 – PV-Rated Fuse
The Mersen HelioProtection® HP10M25 is a fast-acting photovoltaic (PV) fuse designed for 1000 V DC, 25 A applications, offering reliable protection for solar power systems. Specifically engineered for PV strings, combiners, inverters, and charge controllers, it safeguards against overcurrents, ground faults, and line faults. With a high interrupting capacity, robust glass-matt-epoxy body, and tin-plated copper terminals, this fuse ensures long-term durability and consistent performance even under extreme temperature variations. UL-listed, gPV-rated, and IEC 60269-6 compliant, the HP10M25 provides dependable, maintenance-free protection for residential, commercial, and utility-scale solar installations, enabling safe and efficient operation of photovoltaic systems.
Mersen HelioProtection® HP15M5 – PV-Rated Fuse
The Mersen HelioProtection® HP15M5 is a 5 A, 1500 V DC fast-acting photovoltaic (PV) fuse designed for modern high-voltage solar systems. Engineered for utility-scale solar farms, commercial rooftops, and hybrid energy projects, it provides reliable overcurrent protection for PV strings, arrays, inverters, and charge controllers. With a robust GMG insulated body, tin-plated copper terminals, and gPV-class fast-acting technology, the HP15M5 ensures safe operation under high-voltage, temperature cycling, and extreme environmental conditions. UL-listed, IEC 60269-6 compliant, and RoHS certified, this fuse delivers maintenance-free, long-term protection for high-voltage PV installations.
Mersen HelioProtection® HP15M10 – PV-Rated Fuse
The Mersen HelioProtection® HP15M10 is a 10 A, 1500 V DC fast-acting photovoltaic (PV) fuse designed for modern high-voltage solar systems. Engineered for utility-scale solar farms, commercial rooftops, and hybrid energy projects, it provides reliable overcurrent protection for PV strings, arrays, inverters, and charge controllers. With a robust GMG insulated body, tin-plated copper terminals, and gPV-class fast-acting technology, the HP15M10 ensures safe operation under high-voltage, temperature cycling, and extreme environmental conditions. UL-listed, IEC 60269-6 compliant, and RoHS certified, this fuse delivers maintenance-free, long-term protection for high-voltage PV installations.
Mersen HelioProtection® HP15M15 – PV-Rated Fuse
The Mersen HelioProtection® HP15M15 is a 15 A, 1500 V DC fast-acting photovoltaic (PV) fuse designed for high-voltage solar systems. Engineered for utility-scale solar farms, commercial rooftops, and hybrid renewable energy projects, it provides reliable overcurrent protection for PV strings, arrays, inverters, and charge controllers. With a robust GMG insulated body, tin-plated copper terminals, and gPV-class fast-acting technology, the HP15M15 ensures safe operation under high-voltage, temperature cycling, and extreme environmental conditions. UL-listed, IEC 60269-6 compliant, and RoHS certified, this fuse delivers maintenance-free, long-term protection for modern PV installations.
Mersen HelioProtection® HP15M20 – PV-Rated Fuse
The Mersen HelioProtection® HP15M20 is a 20 A, 1500 V DC fast-acting photovoltaic (PV) fuse designed for high-voltage solar systems. Engineered for utility-scale solar farms, large commercial PV projects, and hybrid renewable energy installations, it provides reliable overcurrent protection for PV strings, arrays, inverters, and charge controllers. Featuring a robust GMG insulated body, tin-plated copper terminals, and gPV-class fast-acting technology, the HP15M20 ensures safe, durable, and maintenance-free operation under extreme environmental and high-voltage conditions. UL-listed, IEC 60269-6 compliant, and RoHS certified, this fuse delivers dependable long-term protection for modern PV systems.
Mersen HelioProtection® HP15M25 – PV-Rated Fuse
The Mersen HelioProtection® HP15M25 is a 25 A, 1500 V DC fast-acting gPV fuse engineered for modern photovoltaic (PV) systems. Designed to safeguard strings, arrays, and inverters in high-voltage solar installations, it delivers precise and reliable overcurrent protection under demanding operating conditions. With its compact 10×85 mm body, high interrupting capacity, and robust GMG insulated construction, the HP15M25 is an ideal choice for utility-scale solar farms, large commercial rooftop projects, hybrid renewable energy systems, and BESS applications. Fully UL-listed, IEC 60269-6 compliant, and RoHS/REACH certified, it ensures long-lasting, safe, and efficient protection for today’s advanced PV infrastructure.
Mersen HelioProtection® HP15M30 – PV-Rated Fuse
The Mersen HelioProtection® HP15M30 is a 30 A, 1500 V DC fast-acting photovoltaic fuse designed for high-voltage solar applications. Part of the trusted gPV series, it delivers precise overcurrent and short-circuit protection for PV strings, arrays, and inverters in modern solar plants. Built with a compact 10×85 mm GMG insulated body and tin-plated copper terminals, the HP15M30 offers robust performance, high interrupting capacity, and long-term reliability under extreme environmental and thermal cycling conditions. Fully UL-listed, IEC 60269-6 compliant, and RoHS/REACH certified, it ensures safe, efficient, and maintenance-free protection in utility-scale solar farms, large commercial projects, hybrid renewable energy systems, and BESS setups.
Mersen HelioProtection® HP15M32 – PV-Rated Fuse
The Mersen HelioProtection® HP15M32 is a 32 A, 1500 V DC fast-acting photovoltaic fuse engineered for next-generation high-voltage solar applications. As part of the reliable gPV series, it provides accurate overcurrent and short-circuit protection for PV strings, arrays, inverters, and energy storage systems. Built with a compact 10×85 mm GMG insulated body and tin-plated copper terminals, the HP15M32 ensures high interrupting capacity, superior durability, and consistent performance under extreme electrical, thermal, and environmental conditions. Fully UL-listed, IEC 60269-6 compliant, and RoHS/REACH certified, it offers safe, efficient, and long-lasting protection for utility-scale solar farms, large commercial PV projects, hybrid renewable energy systems, and BESS installations.
Mersen PV Modular Fuse Holder — CUS101HEL
The Mersen CUS101HEL, part of the Modulostar® range, is a compact single-pole modular fuse holder designed for photovoltaic applications up to 1000 V DC. Built to accommodate 10×38 mm gPV fuses (HP6M, HP10M series), it ensures safe, finger-safe (IP20) fuse replacement, high reliability with 100 kA SCCR short-circuit rating, and easy DIN-rail mounting for combiner boxes, inverters, and PV array protection. Made from flame-retardant thermoplastic with lockable and sealable options, it is ideal for both residential and utility-scale solar projects, with an optional CUS101IHEL variant that includes a blown-fuse indicator for easier maintenance.