Terasaki E125 NJ 3 100 E125-NJ TemBreak2 circuit breaker 3P 20A FC

E125 NJ 3 100 is a Terasaki circuit breaker. Here are its common electrical parameters: Basic Parameters - **Rated Current (In)**: 125A. It can stably carry this current long - term under standard conditions, suitable for relevant three - phase circuits. - **Number of Poles**: 3 poles for three - phase circuit protection, enabling simultaneous monitoring and control. - **Tripping Characteristics**: "NJ" indicates standard features with overload long - delay, short - circuit short - delay, and instantaneous short - circuit tripping to prevent false and timely cut - off. Voltage Parameters - **Rated Operating Voltage (Ue)**: Usually 400V for industrial and commercial three - phase AC systems. - **Rated Insulation Voltage (Ui)**: Generally 690V to ensure insulation above Ue and prevent safety issues. - **Rated Impulse Withstand Voltage (Uimp)**: Commonly 8kV to resist lightning - like overvoltages. Short - circuit Breaking Capacity Parameters - **Rated Short - circuit Breaking Capacity (Icn)**: 100kA (effective). It can reliably cut off 100kA short - circuit current under test conditions. - **Rated Operating Short - circuit Breaking Capacity (Ics)**: About 75kA (75% of Icn), allowing normal operation after short - circuit interruption. Other Parameters - **Power Loss**: Between a few and over ten watts. Lower loss means higher efficiency and lower cost. - **Power Factor**: 0.2 - 0.5 (for different short - circuit tests), useful for short - circuit performance evaluation.