Technical Parameters
Parameter Specification
Product type Thermal overload relay
Product series ABB TA series
Compatible contactors ABB A / AF series contactors
Current setting range 52–75 A
Tripping class Class 10A
Number of poles 3
Rated operational voltage (Ue) Up to 690 V AC
Rated insulation voltage (Ui) 690 V AC
Auxiliary contacts 1 NO + 1 NC (trip indication)
Reset type Manual
Phase failure sensitivity Yes
Ambient temperature compensation Yes
Mounting Direct mounting to contactor or panel mounting
Protection degree IP20
Ambient operating temperature −25 °C to +55 °C
Applicable standards IEC compliant
Typical applications Motor starters, MCC panels, industrial motor protection
The ABB TA75DU-52M is an adjustable thermal overload relay designed to provide reliable motor protection against overload and phase failure when used together with ABB contactors. It features manual reset, ambient temperature compensation, and a wide current adjustment range, making it suitable for three-phase motor protection in industrial motor starters and control panels.