Technical Parameters
Parameter Specification
Product type Thermal overload relay
Product series ABB TA series
Compatible contactors ABB A / AF series contactors
Current setting range 13–19 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, control panels, industrial motor protection
The ABB TA25DU-19M is an adjustable thermal overload relay designed to protect three-phase motors against overload and phase failure. It features manual reset, ambient temperature compensation, and a compact design suitable for mounting with ABB A / AF series contactors. The relay is widely used in motor starters, control panels, and industrial motor protection applications.