Eaton SPDIs with MTMOV technology

The latest series of Eaton SPDIs offer much higher kA ratings in the same DIN43880 package. This upgrade of kA ratings now exceeds the base recommendations in AS/NZS 3000:2007 wiring rules, appendix F.

The SPD150I has an Imax rating of 120 kA compared to 100 kA for the old SPD120I and wiring rules base recommendation of 100 kA. The new SPD360 series has an Imax of 50 kA compared to 40 kA for the old SPD3 series and wiring rules base recommendation of 40 kA. Further to improvements in kA ratings, the series utilises MTMOV technology. This technology improves alarm and safety disconnects by using inline thermal disconnectors that are rated at the full Imax of the product. In the past, most thermal fuse alarms were parallel connected, and if series connected were not capable of accepting full Imax with the potential to not disconnect the MOV when failure occurred. Furthermore, this technology is now UL1449ed3 type 4 listed.