Hammond part 178MG1000 is a Medical Grade Plug-In Line Isolation Transformer. 120VAC 8.67A input, 240VAC 4.17A output. cULus Listed to UL 60601-1 (1 Edition) and CAN/CSA-C22.2 No. 601.1-M90 (R2005). Each unit provides complete line isolation and noise filtering plus utilizes a Faraday shield to reduce leakage currents below UL60601-1 requirements (under 100 microamps). Reduced noise coupling due to floating AC output. Intended for non-patient connected indoor applications protecting sensitive electronic equipment. Not intended to be used to supply power to life support appliances. Vented 14 gauge steel housing with white powder paint. Hospital Grade 3-wire grounded Input Plug (see chart). Duplex Hospital Grade Output Receptacles. On-Off Switch / Circuit Breaker combo protected, and built in automatic Thermal Cut Out for added protection.