The USED Square D QO2175SB Surge Protector Device is a reliable and efficient circuit breaker accessory designed to protect electrical equipment and systems from power surges. With a voltage rating of 120/240V and a capacity of 25KA, this surge arrestor is suitable for various industrial and commercial applications. The device comes in a pack of 2 poles, making it easy to install and provide surge protection for multiple circuits. The Square D brand is known for producing high-quality electrical equipment, ensuring that this surge protector device will effectively safeguard your electrical systems.