New Holland 86400227 Seat Switch Assembly

The 86400227 is a normally open (NO) operator presence seat switch designed as a safety interlock for agricultural and construction machinery. It ensures machine functions are disabled when the operator seat is unoccupied, preventing unintended movement or operation of hydraulic and PTO systems. The component is a micro switch only; the housing and harness assembly are supplied separately under part number 242306A1. This switch supersedes previous revisions including 84130082, 86400465, 86401228, 86603490, and 87300397 with no fitment change. It is a direct-fit replacement for New Holland C-Series and L-Series skid steer loaders, CR-Series combine harvesters, TC-Series and Boomer compact tractors, as well as Case-IH and Case Construction equivalent models. Manufactured to OEM specifications for reliable electrical continuity and mechanical durability in high-vibration environments.