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General| Rated Current (In) | 100 A |
|---|---|
| Poles | 3 |
| Rated Voltage (AC) | 690 V |
| Frame Size | NF100 |
| Mounting Type | Fixed |
| Trip Characteristic | Thermal-magnetic |
| Number of Poles | 3 |
| Breaking Capacity | 50 kA at 415 V |
Explains tripping times for overcurrents at 130% and 200% of rated current.
Discusses instantaneous tripping settings and their importance for coordination with other devices.
Presents a table to compare different MCCB types and their characteristics for selection.
Discusses the importance of matching interrupting capacity to fault levels for proper protection.
Explains selective interruption, ensuring only the faulty circuit device trips.
Describes cascade back-up as an economical approach using upstream breaker capacity for downstream protection.
Details how I²t let-through and current limiting affect protection coordination.
Covers considerations for coordinating MCCBs and wiring based on temperature rise and current.
Explains how to coordinate MCCBs with motor starters for overload and short-circuit protection.
Discusses coordination of MCCBs with high-voltage power fuses (PF) and OCRs.
Details selection criteria for MCCBs in motor branch circuits, considering starting current and trip curves.
Discusses selecting MCCBs for transformer primary circuits, considering excitation surge currents.
Details computation methods for short-circuit current using percentage or ohmic values.
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