Additional features
Network frequency	50/60 Hz
[Ue] Operational rated voltage	380 - 415 V AC 50/60 Hz; 500 V AC 50/60 Hz;
Magnetic trip threshold	4 x In
[Ics] Rated operational breaking capacity	75 kA 75 % complies with EN/IEC 60947-2 - 220 - 240 V AC 50/60 Hz; 37.5 kA 75 % complies with EN/IEC 60947-2 - 380 - 415 V AC 50/60 Hz; 30 kA 75 % complies with EN/IEC 60947-2 - 440 V AC 50/60 Hz; 11.25 kA 75 % complies with EN/IEC 60947-2 - 500 V AC 50/60 Hz; 50 kA 100 % complies with EN/IEC 60947-2 - 500 V DC
[Ui] Rated insulation voltage	690 V AC 50/60 Hz complies with EN/IEC 60947-2
[Uimp] Rated impulse voltage withstand	8 kV corresponds to EN/IEC 60947-2
Control type	Manual trip test; toggle switch
Local signalling	ON/OFF indicator; trip indicator
Mounting mode	Plug-in
Mounting position	Vertical
Mounting bracket	35 mm symmetrical DIN rail
9-mm pitch	12
Height	103 mm
Depth	81 mm
Width	108 mm
Product weight	0,96 kg
Mechanical life	20000 cycles
Electrical lifetime	10000 cycles
Provisions for padlocks	Lockable
Description of locking options	Integrated locking
Connections - terminals	Tunnel terminals 1.5…50 mm² solid; tunnel terminals 1…35 mm² stranded
Wire stripping length	20 mm
[M] tightening torque	3,5 Nm
Earth fault protection	Separate block
Contact position indicator
Compatibility of comb rails and distribution blocks
Contractual warranty
Warranty (in months)	18
Main features
Product series	Acti9
Product name	Acti9 NG125
Product or component type	Miniature circuit breaker (MCB)
Device short name	NG125L
Device application	Distribution
Pole description	4P
Number of protected poles	4
Neutral position	Left
[In] Rated current	50 A at 40 °C
Type of network	AC; DC
Trigger technology	Thermal-magnetic
Cam disc	B
Breaking capacity	100 kA Icu at 220 - 240 V AC 50/60 Hz complies with EN/IEC 60947-2; 40 kA Icu at 440 V AC 50/60 Hz complies with EN/IEC 60947-2; 50 kA Icu at 380 - 415 V AC 50/60 Hz complies with EN/IEC 60947-2; 15 kA Icu at 500 V AC 50/60 Hz complies with EN/IEC 60947-2; 36 kA Icu at
Application category	Category A corresponds to IEC 60947-2
Suitability for insulation	Yes, complies with IEC 60947-2
Standards	EN/IEC 60947-2
Mounting
Degree of protection (IP)	IP20 complies with IEC 60529
Degree of protection (IK)	IK05 corresponds to EN/IEC 62262
Pollution degree	3 corresponds to IEC 60947-2
Over voltage category	IV
Drip-proof	2 corresponds to IEC 60068-1
Relative humidity	95 % at 55 °C
Operating altitude	2.000 m
Operating ambient temperature	-30…70 °C
Ambient temperature during storage	-40…70 °C
Packaging units
VPE 1 type	PCE
Number of devices per package	1
VPE 1 height	8,6 cm
VPE 1 width	12,1 cm
VPE 1 length	15,7 cm
Packaging weight (Lbs)	1,041 kg
VPE 2 type	S03
VPE 2 quantity	12
VPE 2 height	30 cm
VPE 2 width	30 cm
VPE 2 length	40 cm
VPE 2 weight	12,487 kg

Acti 9 NG125L circuit breaker, 50kA (IEC/EN 60947-2). 3-pole, nominal current 50A, B 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 NG125L circuit breaker meets the following standards - IEC/EN 60947-2.