Item Standard Rating 20(4)A 250VAC (EN 61058-1) 15A 125VAC or 250VAC (UL 1054) 1/2A 125VDC 1/4A 250VDC 1/8HP 125VAC 1/4HP 250VAC Contact Resistance 15mO max. (initial) Insulation Resistance 100MO min.( at 500V DC) Dielectric Strength Between terminals of same polarity AC 1000V (50/60Hz for 1minute) Electrically Life 100,000 operations min. Mechanically Life 1,000,000 operations min.