General technical data

The following table lists the technical data for all inverters independent of

  • Type
  • Design
  • Size
  • Power rating

General data

Interference immunity

Meets EN 61800-3; 2. Environment

Interference emission

Limit value class C3 in accordance with EN 61800-3. The interference suppression level can be improved with relevant measures.

For further information, refer to chapter EMC-compliant installation according to EN 61800-3 in the product manual.

Ambient temperature ϑamb

0 °C to +40 °C without derating

40 °C to +55 °C with derating

For further information, refer to chapter Derating in the product manual.

Type of cooling

  • Convection for the following devices:
    • MCB91A-0025-5D3-..
    • MCB91A-0034-2D1-..
  • Increased air cooling by a temperature-controlled fan for the following devices:
    • MCB91A-0040-5D3-..
    • MCB91A-0042-2D1-..

Degree of protection according to EN 60529

All types

IP20, only with power connectors plugged in for grid and motor

Pollution class, overvoltage category, installation altitude

Pollution class

2 in accordance with IEC 60664-1

Overvoltage category

III in accordance with IEC 60664-1

Installation altitude

Up to h ≤ 1000 m without restrictions.

The following restrictions apply to altitudes > 1000 m:

  • From 1000 m to max. 3800 m: IN reduction by 1% per 100 m
  • From 2000 m to max. 3800 m: To maintain protective separation and the air gaps and creeping distances in accordance with EN 61800‑5‑1, you have to connect an overvoltage protection device in order to reduce the overvoltages from category III to category II.

Ambient conditions

Climatic conditions

  • Long-term storage (weatherproof):
  • EN 60721-3-1 class 1K2 temperature -25 °C to +70 °C (in contrast to the standard)
  • Non-condensing; no moisture condensation
  • Transport (weatherproof):
  • EN 60721-3-2 class 2K3 temperature -25 °C to +70 °C
  • Non-condensing; no moisture condensation
  • Operation (fixed installation, weatherproof):
  • EN 60721-3-3 class 3K3 temperature 0 °C to +40 °C (deviating from norm)
  • Non-condensing; no moisture condensation

Chemically active substances

  • Extended storage (weatherproof):
  • EN 60721-3-1 class 2C2, no corrosive gases, no salt mist (deviating from norm)
  • Transport (weatherproof):
  • EN 60721-3-2 class 2C2, no corrosive gases, no salt mist, no sea water (deviating from norm)
  • Operation (fixed installation, weatherproof):
  • EN 60721-3-3 class 3C2, no corrosive gases, no salt mist

Mechanically active substances

  • Extended storage (weatherproof):
  • EN 60721-3-1 class 1S1, no conductive dust
  • Transport (weatherproof):
  • EN 60721‑3‑2 class 2S1
  • Operation (fixed installation, weatherproof):
  • EN 60721-3-3 class 3S1, no conductive dust