• Leakage free hybrid topology
• Energy coordinated with other ProTec families without additional cable length
• State-of-the-art thermal disconnector
• Backup fuse up to 315 A gG
• Short circuit current rating up to 50 kA
• Vibration and shock withstand capability
• All modules, also N-PE, with operating state green-red
• Optional remote contact signaling
• VDE-IEC Class I & II / EN Type 1+2 and UL Type 4CA certified
The ProTec T1H modular surge protection device provides high durability due to its leakage-free performance ensured by a special series connection of a varistor and a gas discharge tube. The product family is ideal as a supplement to the basic ProTec T1 product family, available for single or three-phase TN-S, TT, and TN-C systems, with a maximum continuous operating voltage of 300 V AC where a complete absence of leakage current is required. With its Type 1 classification, the ProTec T1H can be installed between boundaries 0b – 1 and higher. The varistor-based protection modules feature outstanding short-circuit currents up to 50 kA RMS without using a back up to the main fuse, with a nominal current of 315 A. The device can be installed upstream of meter panels in low-voltage consumer installations. An optional remote contact (RC) features a three-pole remote signaling terminal that enables remote monitoring of the device’s operating state.