1. Type Designation Breakdown

• MPB51A = MOVIDYN power supply (rectifier, 51A series)

• 027 = Rated power 27 kW

• 503 = 3‑phase 380–500 V AC

• 00 = Standard version

• SEW part number: MPB51A027‑503‑00

2. Electrical Specifications

• Input: 3×380–500 V AC ±10%, 50/60 Hz

• Rated input current: 42 A

• Rated DC output: 550–700 V DC, 50 A, 27 kW

• Brake chopper: Integrated (for external brake resistor)

• Overload capacity: 150% / 60 s

• Internal 24 V DC supply: For axis modules & controls

3. Mechanical & Environmental

• Enclosure: IP20 (cabinet mounting)

• Dimensions (W×H×D): 203 × 381 × 254 mm

• Weight: 6.6 kg

• Ambient temperature: 0 °C … +45 °C

• Cooling: Forced air (internal fan, top exhaust)

4. Function & Interfaces

• Core function: 3‑phase rectifier for shared DC bus (feeds MOVIDYN servo inverters)

• DC bus: 550–700 V DC (parallel operation possible)

• Braking: Integrated chopper for regenerative braking

• Control: Enable/disable, fault signaling, 24 V aux supply

• Status: LED indicators for power, DC bus, fault

5. Status & Replacement

• Status: Obsolete / EOL (discontinued; only new surplus/refurbished available)

• Direct replacement: MPB61A027‑503‑00 (MOVIDYN 61A series, same rating, improved efficiency)

• Related models:

  • MPB51A011‑503: 11 kW, 20 A

  • MPB51A055‑503: 55 kW, 100 A

6. Typical Applications

• Multi‑axis servo systems (MOVIDYN inverters)

• Machine tools, CNC, packaging, material handling

• High‑inertia loads requiring regenerative braking

• Shared DC bus architectures (energy exchange between drives)