The PHOENIX CONTACT part REL-MR-12DC/21-21 is a reliable and efficient plug-in miniature power relay designed for various industrial and automation applications. This power relay features two PDTs (pole double throw) that make it versatile for different control and switching tasks.With its power contact capability, this relay can handle high current loads while maintaining optimal performance. The input voltage is rated at 12 V DC, making it compatible with standard DC power supplies commonly used in many industrial and electronic systems.The compact and easy-to-install design ensures convenient integration into control panels or equipment. This miniature power relay is renowned for its high-quality construction and long-lasting durability, ensuring reliable operation even in demanding environments.Whether used in HVAC systems, industrial machinery, or automation projects, the PHOENIX CONTACT REL-MR-12DC/21-21 is an industry-leading solution that guarantees uninterrupted and efficient power switching.