The Square D QOB320 20A Circuit Breaker is a reliable and durable electrical component suitable for use in air conditioning, heating, and refrigeration equipment. With a maximum amperage of 20A and a voltage rating of 201-250V, this 3 pole circuit breaker by Square D offers a safe and efficient power distribution solution for various applications. Its operation method is simple and straightforward, with a switch control style for easy on/off switching. This black-colored circuit breaker is designed for longevity and performance, making it a smart choice for industrial and commercial electrical systems.