What the LA9LB398 Is and Where It Fits
The LA9LB398 is a test device for the Integral 18 range of motor starters — it's a diagnostic tool, not a power-handling component, designed to verify the starter's control circuit and trip functions without running the motor. It sits in the Motor Control Accessories category (22384-STARTERS,INTEGRAL,ACCESS), meaning it's an add-on for an existing Integral 18 base unit, not a standalone starter.