If you have questions about our products, Fill out the form below and we will answer any questions you have. Tips: Fields marked with*are required. ABB NMTU-21C NMYU-21C 3BSE017429R1 Thermal Resistor Power Module Introduction The ABB NMTU-21C / NMYU-21C 3BSE017429R1 Thermal Resistor Power Module is designed to manage power dissipation and protect industrial drive and automation systems from thermal overload. By monitoring and regulating current flow *Your Name: *Your Email: *Your Name: *Vdcode: Submit