1. V8DADHHC-EHH00-000 Substitution Conclusion Based on a detailed comparison, the V8DADHHC-EHH00-000 can serve as a full-form, fit, and functional replacement for the original part number V8D2UHHB-ALC00-000. All core technical specifications between the two models are identical. This includes the circuit type (SPDT), switching function (momentary-off-momentary), rated current and voltage (20A DC/12V), ingress protection rating (IP66/IP68), termination style, panel cutout dimensions, as well as mechanical and electrical endurance. The sole technical difference lies in the actuator (button) color: the original model is Black, while the candidate model is Gray. This is a purely cosmetic variation with no impact on electrical or mechanical performance. Provided the end application has no mandatory requirement for actuator color, the V8DADHHC-EHH00-000 can be used as a direct drop-in substitute with no change in functionality or reliability.