The Eaton SF150SH5X5 all-in-one surge protective device (SPD) is a complete system for protecting residential, light commercial and industrial applications from damaging power surges. This device is designed to provide high-performance protection with low maintenance cost, excellent lifetime performance and convenience. The SF150SH5X5 surge protective device is UL listed to UL1449 Type 2, 3rd Ed. and is RoHS compliant. It features an advanced Hybrid Wave sm element network which ensures maximum surge protection up to 150 kA, based on the total connected load of the protected system. This is two-stage protection which operates in both the normal (apparent) and common mode surge events. The SF150SH5X5 has a maximum surge current rating of 150 kA, making it a great choice for the protection of sensitive electrical systems. The device is also protected by a diagnostic LED indicator and optional audible alarm, which will alert you when protection has been compromised. Additionally, this device includes a surge-to-ground test point, which allows technicians to check impedance on each individual line to ground, ensuring that maximum protection is always achieved.