Collection: DEHNguard modular
DEHNguard M Modular Surge Protectors
The modular overvoltage surge arresters in the DEHNguard M series set new standards in safety and protection. Combining high-performance zinc oxide varistors with our proven Thermo-Dynamik-Control monitoring system, DEHNguard delivers reliable overvoltage protection for critical applications.
Key Features
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Modular Design: Fast, tool-free module replacement with secure module locking system
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Mechanical Coding: Each protection path and module is coded to prevent incorrect installation
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Dual-Action Monitoring: Thermo-Dynamik-Control evaluates both discharge current and varistor temperature for maximum safety
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Visual Indicators: Green-red color marking shows operational readiness of each protection path
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Remote Signaling: FM variants feature potential-free changeover contacts for remote fault indication
Optimized for Installation
Multi-function terminal blocks at standardized 1 TE spacing enable convenient wiring with other modular devices. Simple implementation of V-wiring per DIN VDE 0100-534 is possible using optional pin terminal blocks (STAK 25) mounted to all DEHNguard modules.
Standards & Certifications
- Type 2 + Type 3 Surge Arresters (EN 61643-11 / IEC 61643-1)
- VDE 0100-534 Compliant – meets 3+1 configuration requirements (40 kA N-PE minimum)
- Available in FM-approved variants
- For lightning protection zone applications at interfaces 0B–1 and higher
Why Choose DEHNguard M?
Decades of international experience inform our design. The Thermo-Dynamik-Control system accounts for a wide range of practical scenarios that can damage surge arresters, providing both reliable protection and documented operational readiness for each circuit path.
Need technical details? Download product datasheets or contact our technical team for specification support.
