The Square D Universal Whole Home Surge Protection 50 KVa is a plug-in style surge protector designed for interior use. It features thermal overload protection and a trip indicator, providing reliable protection for your home. With a maximum amperage of 50000a and a voltage of 240V, this surge protector is suitable for single-phase systems. The Square D brand ensures quality and durability, making it a reliable choice for safeguarding your home electrical system from power surges.