■ Forced open actionεπ' device(NC contacts onl‍∑Ω©y), to disconnect thδ≠β≤e contact when the contact has fusi↔¥→ng and other failures

■ Strengthened top seal s≤★"δtructure improves the sealing perform≥♠≥αance

■ Built-in contact ↕ ×holder has fast-action type: 1NC/1∑λNO; Slow-action:1NC /1NO a€♣nd 2NC