• Early warning system with clear green-yellow-red indicators
• Available in a wide variety of operating voltages from 75 V to 480 V
• High surge maximum discharge current capability of 50 kA
• State-of-the-art thermal disconnector
• Backup fuse up to 315 A gG
• Vibration and shock withstand capability
• Optional remote contact (RC) signaling
• VDE-IEC Class II / EN Type 2 certified
ProTec T2-ADV features an advanced three-stage life status indicator showing an intermediate degradation status before the arrester’s end-of-life state, thus indicating possible problems or needed maintenance from overvoltage activity, before complete failure. During the SPDs end-of-life transition, green→yellow→red, the connected equipment is continually protected against fatal overvoltage effects. The specially treated autonomous varistors provide a reliable determination of the first switching disconnector, and the redundancy of two powerful separate varistors, both of which are functionally connected provide a unique safety advantage. These safety reserve systems are imperative for the growing need for notifications or alerts when changes in conditions occur and are ideally suited in a variety of environments that protect critical infrastructure. In addition to the visual mechanical indicator, optional remote contacts (RC) feature a three-pole remote signaling terminal, enabling remote monitoring of the operating state of the device.