The ABB RT12K is a reliable IEC contactor accessory designed as a direct-mount overload relay. It’s built to work seamlessly with a range of contactor prefixes including CL00, CL01, CL02, CL25, CL04, and CL45. This Class 20 relay handles currents from 2.5 to 4.1 amps and offers both manual and automatic reset options, giving you flexibility in how you manage motor protection. If you’re looking for a solid add-on to your contactor setup, the RT12K is a solid bet. Distributed by BSP Automation, it’s a straightforward solution that fits right in with industrial control systems.