Class 2 Circuits are circuits with limited energy and a maximum power of 100 VA. According to the NEC & UL definition, class 2 circuits limit the risk of electrical fires and electric shocks due to their limited energy. Therefore, according to UL508A standard (for control cabinets), any component used and attached devices on the branch circuit in a Class 2 circuit don’t require investigation.
So far, an individual NEC Class 2 approved power supply was used to create a class 2 circuit and it required a lot of space. This method wasn't cost effective and caused a lot of wiring and planning effort.
With Murrelektronik's MICO NEC Class 2 approved module, it is now possible to design NEC Class 2 circuits even faster, in a more compact and cost effective way. All you need is a standard power supply unit (that doesn't necessarily has to be NEC Class 2 approved) combined with MICO to design two, four or eight separate load circuits with limited energy in a simple way. By connecting several MICO modules with the integrated bridging system, the number of channels can be increased up to a total current of 40 A. Components attached to the MICO’s marked NEC Class 2 outputs devices no longer need UL-approval.