Product Description RB4 SPECIFICATIONS CONTACT RATING:16A 250V AC;20A 125V AC. ELECTRICAL LIFE:10,000 make-and-break cycles at full load. MECHANICAL LIFE:100,000 cycles min. CONTACT RESISTANCE:20m max (initial) INSULATION RESISTANCE:100M min(DC500V). DIELECTRIC STRENGTH:2,000V AC 1 minute. OPERATING TEMPERATURE:-30%%DC to +120%%DC.