Inherently limited eliminates the need for external protection or internal fusing. The Survivor can withstand a direct short circuit in excess of 15 days. The 100-VA model comes with either 60 or 50/60-Hz ratings at primary input voltages of 115, 115/230, and 200/230 V with a 24-V output. Each size/model includes UL Recognized Class 130 (B) insulation. IEC, EN, and CE-compliant designs are available.