Overtravel power limit switch, manual reset, 4p, 50/25A, 2/3p scheme. range of product: XR and XF – product or component type: overtravel limit switches – device short name: XF9 – electrical circuit type: power circuit – product specific application: safety of hoisting equipment – [Ie] rated operational current: , Ie = 50 A) 2-pole scheme, AC-3, Ie = 25 A) 3-pole scheme.