SIEMENS 

3UA58 40-2T  Thermal Overload Relay

3UA58-40-2T  Siemens, bimetal thermal overload relay,World Series, type 3UA, rated for 40-57 amps,

suitable for : 3TF46, 3TF47, 3TF48, 3TF49,

3TD46, 3TD47, 3TD48, 3TE46,

3TE47, 3TE48 contactors