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The Schneider Electric 33073BA MicroLogic 6.0 A Control Unit is a high-performance electronic trip system designed for selective distribution with integrated earth-fault protection (LSIG). Engineered for MasterPact and ComPact circuit breakers ranging from 630A to 6300A, this digital unit provides advanced ammeter measurements and precise protection adjustments to ensure the safety and continuity of your electrical network.
Key Features & Benefits
- Complete LSIG Protection: Provides Long-time (overload), Short-time (short circuit), Instantaneous, and Ground-fault protection, ensuring comprehensive selective coordination.
- High Rating/Current (In): Compatible with sensors rated from 630A to 6300A (depending on breaker frame), adjustable to meet varying load demands.
- Digital Precision: Features an integrated digital display for real-time current metering and accurate protection setting adjustments.
- Zone Selective Interlocking (ZSI): Includes ZSI functionality to reduce electrical stress on cables during faults while maintaining excellent coordination.
- Interchangeable & Modular: Designed as a removable “brain” for MasterPact and ComPact NS circuit breakers, allowing for field upgrades or changes to protection parameters.
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Electronic Trip Unit (Control Unit) |
| Protection Functions | LSIG (Selective + Earth-fault) |
| Trip Unit Rating (Ir) | Adjustable 0.4 x In to 1 x In (9 settings) |
| Short-time Pick-up (Isd) | Adjustable 1.5 to 10 x Ir |
| Instantaneous Pick-up (Ii) | Adjustable 2 to 15 x In (or OFF) |
| Ground-fault Pick-up (Ig) | Adjustable 0.2 to 1 x In |
| Network Type | AC (50/60 Hz) |
| Poles | 3P or 4P compatible |
| Ambient Temperature | -25°C to +70°C (Operation) |
| Display | Digital Display (Ammeter) |
Applications
- Main low-voltage distribution boards (Main LV switchboards)
- Emergency power supply systems (Generators/ATS)
- Industrial motor control centers (MCC)
- Selective protection in tiered distribution networks
