ABB – MREL‑ / AUA – Relay Output Extension Module for ACS Drives

The ABB MREL‑ (part number AUA) is an add-on relay output extension module for ACS, ACS, and ACS series variable frequency drives. It plugs directly into the keypad slot, providing three additional relay outputs while preserving the keypad connectivity—ideal for enhancing drive I/O without external wiring modifications.

• Model / P/N: MREL‑ / AUA  

• Purpose: Extends ACS// VFDs with extra relay outputs

• Compatibility: Fits ACS, ACS, ACS series (+L version) not for IP/ models  

• Installation: Installed in keypad slot; keypad can be reinstalled on module

• Enclosure: IP panel; compact ( ×  ×  mm)

• Weight: ~ g  

• Certifications: CE; ABB drive accessory standards apply