Schneider Electric Circuit Breaker 18651

Manufacturer: Schneider Electric
Designation: Circuit Breaker 20A C 4p NG125N
Type: 18651
Installation Depth: 47 mm
Tripping Characteristic: C
Number of Poles (total): 4
Number of Protected Poles: 4
Rated Current: 20 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
Switching Neutral Conductor: yes
Overvoltage Category: 4
Pollution Degree: 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-Wire: 1..35 mm²
Connectable Conductor Cross-Section Single-Wire: 1.5..50 mm²
Explosion-Proof: no

The Schneider Electric Circuit Breaker 18651 is an Acti 9 NG125N with 25 kA (IEC/EN 60947-2). It is 3-pole with a rated current of 63 A, C-characteristic, and an operating voltage (Ue) of 380-415 V AC. It protects the circuit against short-circuit and overload currents. The tripping is indicated by the central 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 included. Power supply can be connected from the top or bottom. There is a spring mechanism for low-wear switching of the contacts. The technology of the tripping unit is thermomagnetic. Additionally, stackable auxiliary modules (optional) allow 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.