The CARLING TECHNOLOGIES CA3-B0-26-620-121-D is a hydraulic magnetic circuit breaker suitable for a wide range of applications. This 3-pole circuit breaker is designed to handle a maximum current of 20A and works effectively with voltage inputs of 277VAC/480VAC. Its hydraulic magnetic technology ensures precise and reliable circuit protection. With its compact design and durable construction, this circuit breaker is an ideal choice for various industrial and commercial electrical systems.