Complementary
Network frequency	50/60 Hz
[Ue] rated operational voltage	380...415 V AC 50/60 Hz; 500 V AC 50/60 Hz;
Magnetic tripping limit	8 x In
[Ics] rated service breaking capacity	37.5 kA 75 % conforming to EN/IEC 60947-2 - 220...240 V AC 50/60 Hz; 18.75 kA 75 % conforming to EN/IEC 60947-2 - 380...415 V AC 50/60 Hz; 15 kA 75 % conforming to EN/IEC 60947-2 - 440 V AC 50/60 Hz; 7.5 kA 75 % conforming to EN/IEC 60947-2 - 500 V AC 50/60 Hz; 20 kA 100 % conforming to EN/IEC 60947-2 -
[Ui] rated insulation voltage	690 V AC 50/60 Hz conforming to EN/IEC 60947-2
[Uimp] rated impulse withstand voltage	8 kV conforming to EN/IEC 60947-2
Control type	Manual tripping test; Toggle
Local signalling	Trip indicator; ON/OFF indication
Mounting mode	Clip-on
Mounting position	Vertical
Mounting support	35 mm symmetrical DIN rail
9 mm pitches	12
Height	103 mm
Depth	81 mm
Width	108 mm
Net weight	0.96 kg
Mechanical durability	20000 cycles
Electrical durability	5000 cycles
Provision for padlocking	Padlockable
Locking options description	Integrated padlocking
Connections - terminals	Tunnel type terminals16…70 mm² rigid; Tunnel type terminals10…50 mm² flexible
Wire stripping length	20 mm
Tightening torque	6 N.m
Earth-leakage protection	Separate block
Contact position indicator
Comb busbar and distribution block compatibility
Contractual warranty
Warranty (in months)	18
Environment
IP degree of protection	IP20 conforming to IEC 60529
IK degree of protection	IK05 conforming to EN/IEC 62262
Pollution degree	3 conforming to IEC 60947-2
Overvoltage category	IV
Tropicalisation	2 conforming to IEC 60068-1
Relative humidity	95 % at 55 °C
Ambient air temperature for operation	-30…70 °C
Ambient air temperature for storage	-40…70 °C
Main
Range	Acti9
Product name	Acti9 NG125
Product or component type	Miniature circuit-breaker
Device short name	NG125N
Device application	Distribution
Poles description	3P + N
Number of protected poles	3
Neutral position	Left
[In] rated current	80 A at 40 °C
Network type	DC; AC
Trip unit technology	Thermal-magnetic
Curve code	C
Breaking capacity	20 kA Icu at
Utilisation category	Category A conforming to IEC 60947-2
Suitability for isolation	Yes conforming to IEC 60947-2
Standards	EN/IEC 60947-2
Packing Units
Unit Type of Package 1	PCE
Number of Units in Package 1	1
Package 1 Height	8.6 cm
Package 1 Width	12.4 cm
Package 1 Length	15.6 cm
Package 1 Weight	1.055 kg
Unit Type of Package 2	S03
Number of Units in Package 2	12
Package 2 Height	30 cm
Package 2 Width	30 cm
Package 2 Length	40 cm
Package 2 Weight	13.147 kg

Acti 9 NG125N circuit breaker, 25kA (IEC/EN 60947-2). 3-pole, nominal current 20A, C characteristic, operating voltage (Ue) 380-415V AC, insulation voltage (Ui) 690V AC. Protection of the circuit against short-circuit currents. Protection of the circuit against overload currents. Tripping is indicated by the middle position of the switch knob and by a red, mechanical display on the front of the device. Test button for checking the tripping mechanism. Power supply from above or below. Snap action for low-wear switching of the contacts. Technology of the tripping unit - thermomagnetic. Additional auxiliary modules that can be added in series (optional) - display of switch position, fault tripping, shunt release, undervoltage release, overvoltage release. The NG125N circuit breaker meets the following standards - IEC/EN 60947-2. Furthermore, this series is VDE certified.