At the Light+Building fair in Frankfurt in 2026, Mersen presents its latest ProGrid NH fused load disconnect switches alongside the Surge-Trap(R) K surge protection system. Designed for industrial and commercial networks, these solutions deliver reliable overcurrent and overvoltage protection. Integrated smart monitoring functions enable secure diagnostics and maintenance, tool-free installation and compact dimensions facilitate deployment. Together, they support efficient energy management and accelerate the digital transformation of power distribution infrastructures.
Table of Contents: What awaits you in this article
Mersens ProGrid Next-Generation Switches Secure Industrial Networks With Monitoring
Mersen auf der Light + Building in Frankfurt (Foto: Mersen)
The ProGrid fuse-load disconnect switches represent Mersens latest evolution of fused switch disconnect products, delivering comprehensive overcurrent protection for industrial networks and emerging smart grid architectures. Engineered for peak reliability, they preserve continuity in low-voltage distribution systems by isolating faults swiftly. Featuring an integrated Smart Option, these modular devices empower operators with real-time monitoring, precise event detection, and automated report generation, marking a foundational advancement toward resilient, digitally enabled infrastructure.
Patented Dual-Side Switch Mechanism Ensures Optimal Arc Interruption Safety
The patented actuation system simultaneously releases NH fuse cartridges from both ends, ensuring optimal arc interruption and minimizing clearance distances. Protective covers rated IP20 shield all live parts during operation, preventing accidental contact and enhancing safety. Three adjustable positionsâopen, closed, and parkedâcan be locked with a padlock to secure the switch state against unauthorized access. Awarded German innovation and design honors, this mechanism exemplifies industry-leading reliability and user protection.
ProGrid Standard Units Upgrade To Smart Without Housing Modifications
ProGrid is offered in Standard and Smart versions, ensuring reliable protection for low-voltage networks. Standard units can be upgraded to Smart functionality without modifying enclosures or adding modules, thanks to the integrated Smart Monitoring module. This built-in sensor system enables contactless installation and real-time energy management. Direct mounting onto live busbars or hook clamp terminals guarantees fast, secure installation even in confined control cabinets. The upgrade path supports evolving needs.
Europes Surge-Trap(R) K protects buildings from lightning and surges
Developed in Europe, the Surge-Trap(R) K device offers comprehensive Type 1+2/Class I+II protection against direct lightning impulses (10/350 µs) and induced transient overvoltages (8/20 µs). It carries multiple certifications in accordance with international standards, guaranteeing compliance and reliability. Its compact form factor conserves installation space, while a patented, toolâfree plug-in mechanism ensures secure vibration-resistant attachment even under IEC 60721 conditions. Service and module replacement processes are simplified for efficient scheduled routine maintenance operations.
Surge-Trap(R) K ensures safe operation with dual PE grounding
Surge-Trap(R) K integrates dual protective earth connections for uniform potential distribution across modules, reducing ground fault risks. Each unit features mechanical coding to prevent incorrect phase or neutral conductor insertion, eliminating wiring errors. This robust design ensures reliable operation and maintenance through secure alignment and attachment. Optimized for main distribution boards, industrial power systems, and electric vehicle charging stations, it consistently delivers enhanced safety and performance in demanding electrical environments.
Protection solutions for commercial, industrial, smart grids, EV charging
Designed to meet the rigorous demands of commercial and industrial facilities, smart grids, and electric vehicle charging infrastructures, both solutions deliver unparalleled protection and ease of installation. High-performance overcurrent and surge safeguards integrate seamlessly with existing electrical frameworks, while modular mounting ensures rapid deployment in confined control cabinets. Advanced connectivity features enable real-time data acquisition, fault diagnosis, and automated alerts, empowering facility managers to optimize energy distribution and maintain operations.
Mersen ProGrid and Surge-Trap K optimize low-voltage network protection
Mersens ProGrid NH fuse load-break switch and the Surge-Trap(R) K system deliver advantages for IoT enthusiasts and network operators by combining robust safety features, a space-saving design, and intelligent monitoring capabilities. These devices ensure reliable protection of low-voltage electrical networks in commercial and industrial settings, protecting against overcurrents and overvoltages. User-friendly installation and retrofit options simplify integration into existing distribution systems, advancing energy infrastructure digitization through real-time diagnostics and transparency.
