JRS2 (3UA) thermal relay is suitable for general AC motor of long or discontinuous long
operation with rated frequency of AC 50

JRS2 (3UA) thermal relay is suitable for general AC motor of long or discontinuous long
operation with rated frequency of AC 50Hz, voltage up to 660-1,000V and current
of 0.1-630A.

It is used for overload protection and has the function of breaking phase protection,
temperature compensation and trip indication. It can automatically and passively
get back. It can be fixed with contactor together, also be independently fixed.