If you have questions about our products, Fill out the form below and we will answer any questions you have. Tips: Fields marked with*are required. ABB 88FN02A-E GJR2370800R0200 Bus Coupling Device Introduction The ABB 88FN02A-E GJR2370800R0200 is a dedicated bus coupling device designed to ensure reliable communication and structural separation between automation bus segments. From a system architecture standpoint, this module plays *Your Name: *Your Email: *Your Name: *Vdcode: Submit