Eaton BA43A Block Overload Relay 3P Size 4 Amb Comp For Starter

The Eaton BA43A Type B block overload relay is a three-pole (3P) protection device designed for use in starter circuits and offered in size 4 to fit common starter mounting and wiring configurations. As a BA43A model, it is explicitly identified as a block overload relay for starters, with the Type B designation signaling its intended protective characteristics within Eaton's series of block relays. The unit includes ambient compensation for starter installations, referenced by the AMB COMP FOR STARTER designation, which supports stable performance across typical installation environments. In a starter assembly, this 3P, size 4 configuration provides the required overload protection while maintaining compatibility with standard control schemes and wiring practices used in industrial motor control. For buyers selecting a dedicated starter protection relay with a Type B profile from Eaton, the BA43A presents a purpose-built, compact option that aligns with common sizing and specification expectations for three-pole, size-4 protection relays.