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Can a Series B1 Freedom overload mount to a Series A1 Freedom Contactor?

Yes, Series B1 Freedom overloads can mount to Series A1 Freedom contactors.  But the A1 series of heaters are different from the B1 series, so either you need to use series B heaters on the new series B1 overload relay or get the heater adapter C306KAL1-3 to allow for the B series heaters to be used in a A series C306 overload relay.  These kits are used in conjunction with catalog numbers H2001B-3 through H2014B-3 as a means of utilizing series B heaters in the older series A overload relays.

For more information, see our Freedom Product Overview.

Freedom series starter heater charts