• PN: TA25DU32 (TA25DU-32M)
• Brand: ABB
• Series: TA Series Thermal Overload Relay
• Type: 3-Phase Bimetallic Motor Overload Protection Relay

• Function: Installed with ABB AX series AC contactors to form a complete motor starter. It relies on bimetallic thermal deformation to realize overload, single-phase loss and three-phase current unbalance protection for AC motors. When the motor is overloaded or phase missing, the relay trips rapidly to cut off the control loop, avoiding motor winding burnout caused by overheating.

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Core Features

1. Adjustable current setting range: 24A ~ 32A, flexible matching for different rated current motors
2. Class 10 tripping characteristic, fast response for motor overload faults
3. Built-in phase failure and three-phase unbalance protection to prevent single-phase motor burning
4. Supports manual / automatic reset mode, can be used as emergency stop button
5. Equipped with 1NO+1NC isolated auxiliary contacts for fault alarm and control interlock

6. Ambient temperature compensation design, stable tripping performance under -25℃ ~ +55℃ working environment

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Technical Specs

• Rated Insulation Voltage: 690V AC
• Current Adjustment Range: 24 ~ 32A
• Protected Poles: 3 poles
• Auxiliary Contacts: 1 normally open + 1 normally closed
• Auxiliary Rated Current: 5A
• Protection Grade: IP20
• Tripping Class: Class 10
• Mounting: Direct plug-in with AX contactor or independent DIN rail installation
• Operating Temperature: -25℃ ~ +55℃
• Storage Temperature: -40℃ ~ +85℃, 5%~95% RH non-condensing
• HS Code: 8536200000

• Certification: CE, UL certified

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Compatibility

• Matching Contactors: ABB AX09, AX12, AX18, AX25, AX32, AX40 series AC contactors
• Applicable Equipment: Three-phase asynchronous motors, fans, pumps, compressors, conveyors
• Applicable System: Low voltage power distribution cabinet, motor control center (MCC)

• Not Compatible: High voltage motor control circuits, DC motor direct protection

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Application

• Overload and phase loss safety protection for industrial three-phase AC motors
• Motor starter configuration for water treatment, metallurgy, chemical, mining, HVAC industries
• Old low-voltage control cabinet renovation and faulty overload relay spare replacement

• Centralized motor protection in MCC control rooms and automated production lines

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Our Advantage

• Tripping characteristic calibration, contact continuity and insulation test completed before delivery
• 12-month warranty for new original surplus components