Guide to Form Types
When installing our custom industrial control systems, EN61439-2 makes reference to the 'Internal separation of ASSEMBLIES by barriers, or partitions', Table 104. This clause concerns methods of separating busbars, and 'functional units', from one another. This may be achieved either by fitting barriers between the units or by mounting them in separate compartments.
Click a form of separation for the guide classifications:
Forms 2a and 2b
Forms 3a and 3b
Form 4a (types 1, 2 and 3) and 4b (types 4, 5, 6 and 7)