Beschreibung
Beschreibung des Produkts
Molded Case Circuit Breakers are one of the primary power handling devices available in industrial environments.
Technische Parameter
| Parameter | Description |
| Rated Frame Current (Inm) | This is the maximum current that the MCCB can handle. This is typically the maximum value of the adjustable tripping current range. |
| Rated Current (In) | This is the breaker tripping current. This value is less than the rated frame current and is adjustable. |
| Rated Insulation Voltage (Ui) | Insulation voltage is the maximum withstandable voltage that the breaker housing can handle. This is measured under laboratory conditions. |
| Rated Operating Voltage (Ue) | Continuous operating voltage of the MCCB. This is the typical system voltage and can be lower. |
| Rated Impulse Withstand Voltage (Uimp) | Rated impulse withstand voltage is the voltage that the MCCB can handle during a surge event such as a lightning strike. The testing is standardized for a 1.2/50 microsecond impulse. |
| Short Circuit Breaking Capacity (Ics) | I_cs is the highest fault current an MCCB can handle without damaging the unit permanently. The device must always be used below this limit. |
| Mechanical Endurance | This provides an estimation of manual on/off cycles before the mechanical lever system fails. |
| Electrical Endurance | Electrical life provides a figure on how many times a unit can trip before it needs replacement. |
ARBEITSBEDINGUNGEN
1 The altitude is not more than 1500 meters;
2 The ambient temperature shall not be higher than +40 º C and not lower than -5 º C
3 The relative humidity of the surrounding air is not more than 85%(20 degrees);
4 The installation place is free from gas, vapor, chemical deposition, pollution, and other explosive and corrosive media that seriously affect the insulation of the transformer.
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