1. V8DADHHC-EHH00-000 Substitution Conclusion The V8DADHHC-EHH00-000 is a fully qualified drop-in replacement for the original part number V8D1DHHB-CHC00-000 in terms of electrical performance, mechanical construction, and core functionality. Both models are SPDT (Single Pole Double Throw) momentary rocker switches manufactured by Carling Technologies. They share identical key specifications, including: Electrical Rating: 20A DC, 12V Actuation Type: Mom-Off-Mom (Momentary) Illumination: 12VDC Dual Green LEDs Ingress Protection: IP66/IP68 Terminal Type: Quick-connect 6.3mm Panel Cutout Dimensions: 36.83mm x 21.08mm Life Cycle Rating: 100,000 cycles (both mechanical and electrical). The only discernible difference between the two parts is the actuator (rocker) color: the original model features a black actuator, while the substitute model has a gray one. This variance is purely cosmetic. Substitution will alter the switch's visual appearance on the panel but will have no impact whatsoever on electrical safety, mounting compatibility, tactile feel, or environmental sealing performance. For applications where strict visual color matching is not a critical requirement, this substitution is both viable and functionally equivalent.