SW04 Switching boxes are used in connection with the AFJ DDA55 click analyser and any LISN brand, for the measurement of line-bound interference according to CISPR 14-1.

The construction uses air coils in the current path in order to avoid saturation effects with high currents.

The continuous current load-bearing capacity is ensured by the use of large wire cross-sections for the coils.

SW04 is available in two models, up to 100A three phases:
 
 SW04/32 In=32A
 SW04/100 In=100A