D4 Series 0.1A, 16A & 21AD4 series miniature microswitches are a highly reliable switch that offers a high level of repeat accuracy. The D4 series has high contact stability thanks to application-specific contact materials for switching currents of 100 mA to 21 A at 250 V ac.Polyester casingSnap actionV3 case sizeEN 61058 and UL1054-approvedCadmium-free contact materialMechanical life ≥ 2x107 (3 x 106 for high temperature versions)Approvals16A: UL, CSA, VDE, SEV, SEMKO, KEMA, DEMKO, NEMKO, ÖVE, BEAB, SETI16A Screw Terminal: UL, CSA, VDE16A High Temperature: UL, CSA, VDE, SEV, SEMKO, KEMA, DEMKO, NEMKO, ÖVE, BEAB, SETI21A: UL, CSA, VDE, SEV, SEMKO, KEMA, DEMKO, NEMKO, ÖVE, BEAB, SETI