Siemens 6SE9212-8BA40

Siemens 6SE9212-8BA40 MICROMASTER MM55 is a compact variable-speed drive that accepts 208–240 V AC single‑phase input and delivers motor power through a 3‑phase output up to 0.55 kW. With a nominal input current around 3 A, this MM55 unit sits in the lower end of the MICROMASTER family for small automation tasks where space matters. It includes a built-in Class A EMI filter to reduce conducted electrical noise and help meet industrial electromagnetic compatibility standards. The MM55 platform is known for reliable, compact motor control in automation environments, and this model is described by distributors as the 6SE9212-8BA40 MICROMASTER MM55 drive for 208–240 VAC single-phase service.