ABB ta200du-175 thermal overload relay 130a - 175a

Why Choose the ABB TA200DU-225 Thermal Overload Relay?

The ABB TA200DU-225 thermal overload relay is a heavy-duty motor protection relay engineered to protect industrial motors against overload conditions, phase imbalance and phase failure. Identified by part number 1SAZ421201R1005, this relay belongs to the proven ABB TA200DU series, trusted worldwide for reliable motor protection in industrial automation and process applications.

Designed for demanding high-current installations, the TA200DU-225 offers an adjustable thermal current range of 175 to 225 A, making it suitable for large motors, industrial pumps, compressors and process machinery. Its compact direct-mount design enables easy integration with compatible ABB block contactors while helping optimise control panel space.

The relay incorporates trip class 10A protection, temperature compensated operation, selectable manual or automatic reset functionality, and integrated STOP and TEST controls. Auxiliary signalling contacts allow seamless integration into motor starter circuits and industrial automation systems for enhanced monitoring and protection.

Key Advantages

• Reliable thermal overload protection for large industrial motors.
• 175–225 A adjustable current range for heavy-duty applications.
• Protection against motor overload and phase failure.
• Trip class 10A suitable for standard motor starting conditions.
• Direct mounting onto ABB block contactors for simplified installation.
• Manual or automatic reset selectable.
• Integrated STOP and TEST functions for maintenance and diagnostics.

Key Features

• ABB TA200DU thermal overload relay series.
• 175–225 A adjustable setting range.
• 3-pole thermal overload relay.
• Trip class 10A motor protection.
• Integrated 1 NC trip contact.
• Integrated 1 NO signalling contact.
• Automatic or manual reset operation.
• Temperature compensated tripping characteristics.
• Trip indication and trip-free mechanism.
• Direct mounting to compatible ABB contactors.

Technical Specifications

• Manufacturer: ABB
• Series: TA200DU
• Model: TA200DU-225
• Part number: 1SAZ421201R1005
• Product type: Thermal overload relay
• Current setting range: 175–225 A
• Rated operational current: 225 A
• Trip class: 10A
• Rated operational voltage: Up to 690 V AC
• Rated insulation voltage: 690 V
• Number of poles: 3P
• Auxiliary contacts: 1 NC + 1 NO
• Frequency: 50 / 60 Hz
• Protection rating: IP20
• Mounting type: Direct mounting to contactor
• Operating temperature: approx. -25 °C to +60 °C
• Dimensions (H × W × D): approx. 151 × 104 × 126 mm
• Weight: approx. 0.8 kg

Heavy-Duty Motor Protection for Industrial Systems

Thermal overload relays monitor motor current continuously and disconnect the motor supply if overload or phase failure conditions occur. This prevents overheating, insulation damage and premature motor failure while improving operational reliability and reducing costly downtime.

The ABB TA200DU series is widely used in motor control centres, industrial machinery and process automation systems where reliable motor protection is essential. Its compact direct-mount design helps simplify installation while maintaining dependable performance in demanding environments.

Typical Applications

• Industrial motor starters and MCC systems.
• Large pumps, compressors and HVAC systems.
• Conveyor and material handling equipment.
• Heavy-duty process and manufacturing machinery.
• Industrial automation and control panels.
• OEM machinery and motor protection systems.

Trusted by Industrial Engineers Worldwide

ABB thermal overload relays are trusted across industrial automation and manufacturing industries for dependable motor protection, operational safety and long-term reliability in demanding motor control applications.