30 September 2021
What is the difference between the older D2 style contactors where aux contacts had to be specified and the newer LC1D contactors?
Crossing into new units from old units require a review of differences
The older D2 style contactors required a specification of needed auxiliary contacts. For example:
LC1D2501G6 would be an LC1D25 with 1 NC contact
LC1D2510G6 would be an LC1D25 with 1 NO contact
The newer contactors automatically come with 1 NO and 1 NC auxiliary contact. For example:
LC1D25G7 has 1 NO and 1 NC contact
The older contactors usually had a dedicated 60hz coil. This is designated by the 6 at the end of the part number. The newer contactors have coils designed for 50/60hz and are signified by the 7 at the end of the part number.