Offered with resettable over-temperature protection, single medical-grade toroidal isolation transformers of VPM Series are UL recognized and rated from 25 VA to 10 KVA, 50/60Hz. Class F insulation with resettable over-temperature protection promotes reliability, and shielded toroidal construction with flux band reduces stray fields while minimizing size and increasing efficiency. Transformers also carry 155°C (Class F) temperature rating.