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Table for the current load of aluminium busbars acc. to DIN 43670

width x thickness			material	continuous currents in A
				AC up to 60Hz								DC/AC up to16 2/3 Hz
				coated				uncoated				coated				uncoated
				number of busbars				number of busbars				number of busbars				number of busbars
				1	2	3	4	1	2	3	4	1	2	3	4	1	2	3	4
				I	II	III	II⁵⁰II	I	II	III	II⁵⁰II	I	II	III	IIII	I	II	III	IIII
12	x	2	E-AI F13	97	160	178		84	142	168		97	160	183		84	142	171
15	x	2		118	190	204		100	166	193		118	190	210		100	166	197
15	x	3		148	252	300		126	222	283		148	252	305		126	222	286
20	x	2		150	240	245		127	206	232		150	240	252		127	206	237
20	x	3		188	312	357		159	272	337		188	312	364		159	272	342
20	x	5		254	446	570		214	392	537		254	446	576		214	392	539
20	x	10		393	730	1060		331	643	942		393	733	1020		331	646	943
25	x	3		228	372	412		190	322	390		228	372	422		191	322	396
25	x	5		305	526	656		255	460	619		305	528	663		255	460	622
30	x	3		267	432	465		222	372	441		268	432	477		222	372	449
30	x	5		356	606	739		295	526	699		356	608	749		296	528	703
30	x	10		536	956	1340		445	832	1200		538	964	1280		447	839	1180
40	x	3	E-AI F10	346	550	569		285	470	540		346	552	586		285	470	552
40	x	5		456	762	898		376	658	851		457	766	915		376	662	862
40	x	10		677	1180	1650	2190	557	1030	1460	1900	682	1200	1570		561	1040	1460
50	x	5		556	916	1050	1580	455	786	995	1520	558	924	1080		546	794	1020
50	x	10		815	1400	1940	2540	667	1210	1710	2210	824	1440	1850		674	1250	1730
60	x	5		655	1070	1190	1820	533	910	1130	1750	658	1080	1240	1610	536	924	1170	1530
60	x	10		951	1610	2200	2870	774	1390	1940	2480	966	1680	2130	2810	787	1450	2000	2650
80	x	5		851	1360	1460	2250	688	1150	1400	2180	858	1390	1550	2010	694	1180	1470	1920
80	x	10		1220	2000	2660	3460	983	1720	2380	2990	1250	2150	2670	3520	1010	1840	2520	3340
100	x	5	E-AI F6,5	1050	1650	1730	2660	846	1390	1660	2580	1060	1710	1870	2420	858	1450	1780	2320
100	x	10		1480	2390	3110	4020	1190	2050	2790	3470	1540	2630	3230	4250	1240	2250	3060	4050
100	x	15		1800	2910	3730	4490	1450	2500	3220	3880	1930	3380	4330	5710	1560	2900	4070	5400
120	x	10		1730	2750	3540	4560	1390	2360	3200	3930	1830	3090	3770	4940	1460	2650	3580	4730
120	x	5		2090	3320	4240	5040	1680	2850	3650	4350	2280	3950	5020	6610	1830	3390	4740	6280
160	x	10		2220	3470	4390	5610	1780	2960	4000	4820	2380	4010	4820	6300	1900	3420	4590	6060
160	x	10		2670	4140	5230	6120	2130	3540	4510	5270	2960	5090	6370	8380	2370	4360	6040	8000
200	x	10		2710	4180	5230	6660	2160	3560	4790	5710	2960	4940	5880	7680	2350	4210	5620	7400
200	x	10		3230	4950	6240	7190	2580	4230	5370	6190	3660	6250	7740	10160	2920	5350	7370	9750

Remark: Continious currents for aluminium busbars according to the DIN requalations for rectangular bars in interieur systems at +35° C air temperature and + 65° C bar temperature and vertical bar position, bar packages with spaces like the bar thickness respectively minimum 50 mm by laying of 4 busbars or when working with AC-current with a main distance of > 0,8 x main conductor distance (measured middle to middle of the bars). Values for a changed ambient temperature and reducing factors for changed applications are contained in the DIN 43670.

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Table for the current load of aluminium busbars acc. to DIN 43670