Schneider Electric Circuit Breaker 18655

Manufacturer: Schneider Electric
Designation: Circuit Breaker 50A C 4p NG125N
Type: 18655
Installation Depth: 47 mm
Tripping Characteristic: C
Number of Poles (total): 4
Number of Protected Poles: 4
Rated Current: 50 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: yes
Overvoltage Category: 4
Degree of Pollution: 3
Additional Devices Possible: yes
Width in Division Units: 6
Protection Class (IP): IP20
Ambient Temperature during Operation: -30..70 °C
Connectable Conductor Cross-Section Multi-stranded: 1..35 mm²
Connectable Conductor Cross-Section Solid: 1.5..50 mm²
Explosion-Proof: no

The Acti 9 NG125N circuit breaker has a rated current of 80A and a C characteristic. The operating voltage is 380-415V AC, with an insulation voltage of 690V 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 switch features a snap-action mechanism for low-wear contact switching and a thermal-magnetic tripping unit. Additionally, stackable auxiliary modules (optional) are available, allowing for the display of switch 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.