The Siemens 6SL3225-0BH27-5UA1 is a SINAMICS G120 Power Module PM260 — an unfiltered regenerative drive module that recovers braking energy back to the line rather than dumping it through a resistor bank. It's built for the high-voltage end of the G120 family, accepting 500-690 V three-phase AC input at 47-63 Hz. Rated for high overload duty: 7.5 kW at 200% for 3 seconds, 150% for 57 seconds, 100% for 240 seconds, with ambient temperatures from -10 to +50 °C. Under low overload it delivers 11 kW at 140% for 3 seconds, 110% for 57 seconds, 100% for 240 seconds, with ambient from -10 to +40 °C. The FSD frame measures 512 x 275 x 204 mm (HxWxD) and carries an IP20 rating — meaning it's intended for enclosure mounting, not standalone washdown areas. The energy recovery capability is the headline feature here: on a conveyor, crane, or centrifuge that cycles between motoring and braking, this module feeds regenerated power back to the supply instead of heating a brake resistor. That saves panel space, cuts cooling load, and recovers energy that would otherwise be wasted. No external braking chopper or resistor needed for most deceleration profiles.
What the overload ratings mean on site
The high overload curve (7.5 kW at 200% for 3 seconds) is the one that governs motor starting and short-duration peak loads. A 7.5 kW pump or fan that draws 200% rated current during acceleration stays within the module's capability for 3 seconds — enough for most direct-on-line starts. The 150% for 57 seconds covers the acceleration ramp of a higher-inertia load like a centrifuge or conveyor. Low overload (11 kW at 140% for 3 seconds) applies when the duty cycle is less demanding — a constant-torque load that doesn't spike above 140% during start. The ambient temperature ceiling drops to +40 °C under this rating, so if the panel runs hot, the high overload curve with its +50 °C limit is the safer choice.
Panel fit and what it connects to
IP20 means the module needs an enclosure — it's not rated for dust or moisture ingress on its own. The FSD frame mounts in a standard G120 backplane; no Control Unit or BOP is included.