ABB TA25DU8.5 Thermal Overload Relay

Description

The ABB TA25DU8.5 is an economic and reliable thermal overload relay for the protection of electric motors. It features a current setting range of 6.0 to 8.5 A and offers protection against overload and phase failure. This relay is designed for direct mounting onto compatible ABB A-line contactors, creating a compact and efficient motor starter solution. It is equipped with manual and automatic reset options, a trip-free mechanism, and a STOP button.

Specifications

• Manufacturer: ABB
• Model: TA25DU8.5
• Order Code: 1SAZ211201R1038
• Current Setting Range: 6.0 to 8.5 A
• Rated Operational Voltage: up to 690V AC
• Trip Class: 10A
• Mounting: Direct mount on A9 to A30 contactors
• Auxiliary Contacts: 1 Normally Open (NO) + 1 Normally Closed (NC)
• Reset Function: Manual / Automatic selectable

Label Info

• Standards: EN/IEC 60947-4-1, EN/IEC 60947-5-1
• Auxiliary Circuit Rating (AC-15): 3A at 250V
• Auxiliary Circuit Rating (DC-13): 0.12A at 250V

Application

This relay is ideal for use in various industrial applications to protect three-phase and single-phase motors, such as pumps, fans, conveyors, and compressors, from thermal overload and phase loss conditions.

Country of Origin

Made in Germany.

CO2 Impact

Choosing this surplus component avoids the emission of approximately 5.8 kg of CO2 compared to manufacturing a new one. This saving is comparable to driving a car for 29 kilometers.

Availability

This is a new-old-stock (NOS) item in its original, unsealed packaging. Available for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

What contactors is the TA25DU8.5 compatible with?

The TA25DU8.5 is designed for direct mounting on ABB A-line contactors, specifically models from A9 to A30.

Can the reset function be set to automatic?

Yes, this model features a selectable reset function. You can choose between manual reset (blue button) and automatic reset via a selector on the front of the device.

What does 'Trip Class 10A' signify for this relay?

Trip Class 10A indicates that the relay will trip within 10 seconds when the motor is subjected to a locked-rotor current that is 7.2 times the set current value. This class is suitable for standard motor starting applications.

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Last Update: Friday, March 13, 2026