The Square D HJA36150 Molded Case Circuit Breakers are designed for industrial use with a maximum amperage of 150A and a voltage range of 551-600V. Made of ABS plastic material, these circuit breakers are suitable for walls and come in a pack of 1. With a switch control style and long break time, these circuit breakers are ideal for protecting electrical circuits in various rooms within industrial settings. The brand's reputation for quality and the product's durable design make it a reliable choice for ensuring electrical safety in commercial and industrial applications.