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Molded Case Circuit Breakers are one of the primary power handling devices available in industrial environments.
Технические параметры
| 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. |
УСЛОВИЯ ТРУДА
1 The altitude is not more than 1500 meters;
2 Температура окружающей среды должна быть не выше +40 ºC и не ниже -5 ºC
3 Относительная влажность окружающего воздуха не более 85%(20 градусов);
4 Место установки не должно содержать газов, паров, химического осаждения, загрязнений и других взрывоопасных и коррозионных сред, которые могут серьезно повлиять на изоляцию трансформатора.
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