Square D Multi 9 Undervoltage Release – MNx, 400V AC
The Square D (Schneider Electric) Multi 9 MNx undervoltage release (Model M9A26971) is a breaker accessory engineered to automatically trip the associated circuit breaker when the 400V AC control voltage drops below the required operating level. The MNx variant is specifically designed for 400V AC control circuits, making it suitable for standard European and international industrial power systems.
Key Features
- MNx undervoltage release type for automatic trip on voltage loss
- Rated for 400V AC control circuits
- Designed for use with Square D Multi 9 series circuit breakers
- Provides reliable automatic protection against undervoltage and power loss conditions
Specifications
- Model: M9A26971
- Manufacturer: Square D (Schneider Electric)
- Type: MNx (Undervoltage Release)
- Control Voltage: 400V AC
- Product Type: Undervoltage Release
Applications
Designed for industrial control panels, motor control centers, and distribution boards operating on 400V AC control circuits where automatic disconnection on undervoltage or power failure is required. Suitable for protecting equipment and processes that must not operate below nominal voltage conditions.


