Application Note PC-IAC66K details how the BE1-50/51B-230 replaces electro-mechanical overcurrent motor protection relay type IAC66K with no wiring changes. You can download it from http://www.basler.com/html/dwnapps.htm#PCIAC66K
Basler provides new replacement for obsolete overcurrent motor protection relays (IAC66K)
In continuing to provide the protective relay market with the newest innovations for replacement units, Basler Electric is offering a microprocessor-based BE1-50/51B-230 as an exact “plug and play” replacement for the obsolete General Electric 12IAC66K relay. You can obtain additional details on the BE1-50/51B-230 from the Plug-and-Play features flyer – ttp://www.basler.com/downloads/5051B_230 flyer.pdf
