Terasaki E125 NJ 3 125 E125-NJ TemBreak2 circuit breaker 3P 20A FC

E125 NJ 3 125 is a Terasaki circuit breaker. Here are its possible technical parameters: Basic Parameters - **Model**: "E125" means 125A frame current. "NJ" offers standard overload long - delay, short - circuit short - delay, and instantaneous protection. "3" indicates 3 poles for three - phase circuits, and the last "125" is the 125A rated current (In). - **Number of Poles**: 3 for three - phase AC circuit protection. - **Rated Current (In)**: 125A for long - term stable operation. Electrical Performance - **Rated Working Voltage (Ue)**: 400V for industrial and commercial use. - **Rated Insulation Voltage (Ui)**: 690V for good insulation above Ue. - **Rated Impulse Withstand Voltage (Uimp)**: 8kV to resist lightning overvoltage. - **Short - circuit Breaking Capacity**    - **Rated Ultimate Short - circuit Breaking Capacity (Icu)**: Up to 100kA or more. After cutting, it may not work normally.    - **Rated Operating Short - circuit Breaking Capacity (Ics)**: 75% - 100% of Icu, allowing normal post - fault operation. Tripping Characteristics - **Overload Long - delay Tripping**: Delayed action according to a curve when over current, e.g., 1.2×In may trip in 1 - 2 hours. - **Short - circuit Short - delay Tripping**: Trips in tens to hundreds of milliseconds for short - circuits, with adjustable settings. - **Short - circuit Instantaneous Tripping**: Trips immediately at 5 - 10×In to protect circuits. Mechanical Performance - **Mechanical Life**: Over 20,000 opening/closing operations. - **Electrical Life**: Over 5,000 opening/closing operations under rated conditions. - **Operation Mode**: Manual for on - site and emergency use, electric for remote control. Attachments - **Undervoltage Release**: Trips at 35% - 70% of rated voltage. - **Shunt Release**: Enables remote opening with external voltage. - **Auxiliary Contact**: Indicates breaker status, 5A or 6A rated. - **Alarm Contact**: Outputs signal for fault - triggered opening.