Product or component type Miniature circuit-breaker
Device short name NG125a
Device application Distribution
Poles description 3P
Number of protected poles 3
[In] rated current 100 A at 40 °C
Network type DC
AC
Trip unit technology Thermal-magnetic
Curve code C
Breaking capacity 16 kA Icu conforming to EN/IEC 60947-2 - 380...415 V AC 50/60 Hz
8 kA Icu conforming to EN/IEC 60947-2 - 500 V AC 50/60 Hz
20 kA Icu conforming to EN/IEC 60947-2 - <= 375 V DC
Utilisation category Category A conforming to IEC 60947-2
Suitability for isolation Yes conforming to IEC 60947-2
Complementary
Network frequency 50/60 Hz
[Ue] rated operational voltage <= 375 V DC
380...415 V AC 50/60 Hz
500 V AC 50/60 Hz
Magnetic tripping limit 8 x In
[Ics] rated service breaking capacity 12 kA at 75 % of breaking cap. conforming to EN/IEC 60947-2 - 380...415 V AC 50/60 Hz
6 kA at 75 % of breaking cap. conforming to EN/IEC 60947-2 - 500 V AC 50/60 Hz
20 kA at 100 % of breaking cap. conforming to EN/IEC 60947-2 - 375 V DC
[Ui] rated insulation voltage 690 V AC 50/60 Hz conforming to EN/IEC 60947-2
Jun 12, 2017
1
Disclaimer: This documentation is not intended as a substitute for and is not to be used for determining suitability or reliability of these products for specific user applications
[Uimp] rated impulse withstand voltage 8 kV conforming to EN/IEC 60947-2
Contact position indicator Yes
Control type Manual tripping test
Toggle
Local signalling Trip indicator
ON/OFF indication
Mounting mode Clip-on
Mounting support 35 mm symmetrical DIN rail
Comb busbar distribution block NO
compatibility
9 mm pitches 9
Height 103 mm
Width 81 mm
Depth 81 mm
Product weight 0.72 kg
Mechanical durability 20000 cycles
Electrical durability 5000 cycles
Provision for padlocking Padlockable
Locking options description Integrated padlocking
Wire stripping length 20 mm
Tightening torque 6 N.m
Earth-leakage protection Separate block
Environment
Standards EN/IEC 60947-2
IP degree of protection IP20 conforming to IEC 60529
IK degree of protection IK05 conforming to EN/IEC 62262
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