Schneider Electric Circuit Breaker 18640

Manufacturer: Schneider Electric
Designation: Circuit Breaker 80A C 3p NG125N
Type: 18640
Installation Depth: 47 mm
Tripping Characteristic: C
Number of Poles (total): 3
Number of Protected Poles: 3
Rated Current: 80 A
Rated Voltage: 400 V
Rated Insulation Voltage Ui: 690 V
Rated Impulse Voltage Uimp: 8 kV
Voltage Type: AC/DC
Rated Breaking Capacity Icu according to IEC 60947-2 at 230 V: 50 kA
Rated Breaking Capacity Icu according to IEC 60947-2 at 400 V: 25 kA
Frequency: 50..60 Hz
Flush Mounting: no
Switchable Neutral Conductor: no
Overvoltage Category: 4
Degree of Pollution: 3
Additional Devices Possible: yes
Width in Division Units: 4.5
Protection Class (IP): IP20
Ambient Temperature during Operation: -30..70 °C
Connectable Conductor Cross-Section Multi-stranded: 10..50 mm²
Connectable Conductor Cross-Section Solid: 16..70 mm²
Explosion Protected: no

The Acti 9 NG125N circuit breaker has a rated current of 80 A and a C characteristic. The operating voltage is 380-415 V AC, and the insulation voltage is 690 V AC. It protects the circuit against short-circuit and overload currents. The tripping is indicated by the middle position of the switch lever and a red mechanical display on the front of the device. A test button for checking the tripping mechanism is available. The power supply can be connected from the top or bottom. The spring mechanism allows for low-wear switching of the contacts. The technology of the tripping unit is thermomagnetic. Additional snap-on auxiliary modules (optional) allow for the display of switching position, fault tripping, operational current tripping, undervoltage tripping, and overvoltage tripping. The NG125N circuit breaker complies with the standards IEC/EN 60947-2 and is VDE certified.