The new Disconnect Unit combines all safety measures into a single, compact enclosure. The device is ideally suited to all Sunny Central inverters with plant voltage ranging from 600 to 1000 V currently in use in North America. All switch-disconnectors are tightly concentrated in a small space for quick access in a hazardous situation. They can operate under full loads and feature the ampacity reserves required by NEC 2011. The switching handles installed on the front enable you to immediately recognize the switch position. This guarantees a secure and fast disconnection of all energy from the inverter in case of emergency or maintenance.


  • Full compliance with all NEC-2011 safety rules


  • Suitable for all SMA inverters used in the US
  • Extendable up to six disconnectors
  • Available with or without AC switch


  • All switch-disconnectors in a single enclosure
  • Available as an accessory of a complete MV block


  • Visible switch position and fast handling in case of hazardous situation
  • Reliable disconnection, even under full load

DISCONNECT UNIT - Full NEC conformity in a single enclosure

  • Type: Data sheet
  • Language: English (US)
  • Number: SCDISCONNECT-DUS122620
  • Version: 2.0

Disconnect Unit for SUNNY CENTRAL 250U/500U/500HE‑US and SUNNY CENTRAL CP - Unpacking

  • Type: Installation Guide
  • Language: English (US)
  • Number: DISU_SCUS-AP-eng-IUS110911
  • Version: 1.1

Disconnect Unit for Sunny Central 250U/500U/500HE-US/CA and Sunny Central CP - Installation Guide

  • Type: Installation Guide
  • Language: English (US)
  • Number: DISU_SCUS-IA-IUS111711
  • Version: 1.1

Installation requirements for SUNNY CENTRAL 500HE-US/SUNNY CENTRAL 500HE‑CA

  • Type: Technical information
  • Language: English (US)
  • Number: SC500HE-US-Auf-TI-UUS110613
  • Version: 1.3