The effectiveness of indication of the main contact position shall be verified, via:
• The position of the actuator having passed the 3F toque test, OR
• A separate mechanical indicator attached to the internal shaft, OR
• Visibility of the moving contacts
With the Kraus and Naimer Koolkuna range, all 3x methods for proof of isolation are achieved for a Switch-Disconnector rating as per AS/NZS 60947-3.