Overvoltage, power limit and short circuit protection. EMI/RFI to CISPR 55011//14-B. FCC 15-B. High reliability MTBF>100,000 hours. Optional covers available, see stk nos. 377-6968 or 396-1942. Power factor correction to EN61000-3-2 (VLT80 and VLT130). -2