1. General
1.1 Function
The LRM7-63 circuit-breakers are used in domestic installation as well as in commercial and industry electrical distribution systems, protection of circuits against short-circuit currents and overload currents. ON/OFF, isolation.
1.2 Selection
Tripping curves:
B curve (3-5In):protection for people and big length cables in TN and IT systems.
C curve (5-10In):protection for resistive and inductive loads with low inrush current.
D curve(10-20In) :protection for circuits which supply loads with high inrush current at the circuit closing (LV/LV transformers, breakdown lamps)
2. Technical data:
Electrical PARAMETERS |
No. Of Poles |
1P, 2P, 3P, 4P |
Rated Current (In):(A) |
6A,10A,16A,20A,25A,32A,40A,50A,63A |
Rated voltage(Un):(V) |
220V~/230V~/240V~1P, 380V~/400V~/415V ~ (2P,3P,4P) |
Rated frequency:(Hz) |
50/60Hz |
Rated Insulation voltage Ui:(V) |
500V |
Rated impulse withstand voltage(1.2/50us)Uimp:(V) |
6000V |
Rated short-circuit capacity Icn:(A) |
6000A |
Energy limiting class
|
3 |
Instaneous Tripping current: |
B Type(3In~5In) C Type(5In~10In) D Type(10In~20In) |
Grid distance(short-circuit tests) |
45mm |
Electrical life |
4,000 Nos of operating cycles at rated current |
Mechanical PARAMETERS |
Protection Degree |
IP20 |
Material group |
IIIa |
Protection against extemal influences: |
Enclosed |
Contact position indication |
Red/Green |
Mechanical life |
20,000 Nos of operating cycles at rated current |
Contact position indicator |
Yes |
Reference ambient calibration air temperature |
30ºC |
Installation |
Method of mounting |
On symmetrical Din rail 35mm |
Terminal connection type |
Screw terminal,Cable/U-type busbar/Pin-type busbar |
Terminal size top/bottom for cable |
25mm² |
18-4AWG |
Terminal size top/bottom for busbar |
10mm² |
18-8AWG |
Tightening torque |
2.5N.m |
Mounting |
On DIN rail EN 60715 (35mm) by means of fast big clip device |
Operating means |
Lever |
Connection |
From top and bottom |
3.
Overall & Installation Dimensions