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31B015-503-4-00

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31B015-503-4-00
May 27, 2026

31B015-503-4-00

Product Introduction 31B015-503-4-00 is a 0.75 kW compact 4‑quadrant regenerative inverter from the SEW‑EURODRIVE MOVITRAC 31B series, for 3‑phase 380–500 V AC light‑to‑medium industrial applications. It supports regenerative braking and energy feedback to the grid, ideal for small conveyors, fans, pumps, and light material handling.

Description

Model Code Definition

  • 31B: Series (MOVITRAC 31B), compact regenerative type

  • 015: Rated current 4 A (≈ 0.75 kW at 400 V)

  • 503: 3‑phase 380–500 V AC input, no integrated EMC filter

  • 4: 4‑quadrant operation (regenerative braking, grid feedback)

  • 00: Standard firmware, no fieldbus, no STO safety

Technical Specifications

Input

  • Rated voltage: 3‑phase AC 380–500 V

  • Frequency: 50 / 60 Hz (±5%)

  • Rated current: 3.5 A (at 400 V)

Output

  • Rated power: 0.75 kW

  • Rated current: 4 A (at 400 V)

  • Apparent power: 2.8 kVA

  • Frequency range: 0–150 Hz

  • Overload: 125% continuous; 150% for 60 s

Control & Interfaces

  • Control modes: V/F open‑loop, sensorless vector control (VFC)

  • Digital I/O: 6 inputs / 2 outputs / 1 relay

  • Analog I/O: 2 inputs / 2 outputs

  • Protection: Overcurrent, overvoltage, undervoltage, overtemperature, earth fault, short circuit

Mechanical & Environmental

  • Protection class: IP20

  • Ambient temp: 0 °C to +45 °C (derate >40 °C)

  • Storage temp: -25 °C to +70 °C

  • Dimensions (W×H×D): approx. 178 × 279 × 152 mm

  • Weight: approx. 3.7 kg

Key Features

  1. Compact regenerative design
    Small footprint with 4‑quadrant regeneration; feeds braking energy back to the grid, eliminating external brake resistors and reducing energy use.
  2. Light‑duty high efficiency
    Optimized for 0.75 kW motors; sensorless vector control delivers smooth torque at low speeds, suitable for simple, cost‑effective applications.
  3. Robust & easy integration
    IP20 enclosure, standard protections, and modular design simplify installation and maintenance in standard industrial environments.
  4. Flexible expansion
    Add external EMC filter for Class C2 compliance; optional fieldbus modules (PROFINET, EtherNet/IP) enable network control.

Typical Applications

Drives 0.75 kW 3‑phase asynchronous motors. Suitable for:

  • Small conveyors, belt feeders

  • Industrial fans, centrifugal pumps, compressors

  • Light material handling, packaging machinery

  • Automation systems requiring basic energy recovery

Related Models

  • 31B022-503-4-00: 1.5 kW, 4‑quadrant regenerative

  • 31B015-503-1-00: 0.75 kW, 3‑quadrant standard (no regeneration)

  • 31B030-503-4-00: 2.2 kW, 4‑quadrant regenerative


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