Determination of the rated current-carrying capacity of copper busbars (reference standard DIN 43671) (German standard)

1Commonly used rectangular bare copper busbar ampacity meter：

Busbar specifications (Width × thickness)mm	AC to 60Hz(A)			DC or AC to 16Hz(A)
Busbar specifications (Width × thickness)mm	Single fightⅠ	ShuangpinⅡ	Three fightsⅢ	Single fightⅠ	ShuangpinⅡ	Three fightsⅢ
12×2	108	182	216	108	182	220
15×2	128	212	247	128	212	252
15×3	162	282	361	162	282	365
20×2	162	264	298	162	266	303
20×3	204	348	431	204	348	437
20×5	274	500	690	274	502	687
20×10	427	825	1180	428	832	1210
25×3	245	412	498	245	414	506
25×5	327	586	795	327	590	794
30×3	285	476	564	286	478	575
30×5	379	672	896	380	676	897
30×10	573	1060	1480	579	1080	1520
40×3	366	600	690	367	604	708
40×5	482	836	1090	484	848	1100
40×10	715	1290	1770	728	1350	1880
50×5	583	994	1260	588	1020	1300
50×10	852	1510	2040	875	1610	2220
60×5	688	1150	1440	696	1190	1500
60×10	985	1720	2300	1020	1870	2570
80×5	885	1450	1750	902	1530	1890
80×10	1240	2110	2790	1310	2380	3240
100×5	1080	1730	2050	1110	1810	2270

cnc busbar machine