ABB ta200du-150 thermal overload relay 110a - 150a

Why Choose the ABB TA200DU-175 Thermal Overload Relay?

The ABB TA200DU-175 thermal overload relay is a robust motor protection device developed to protect industrial motors against overload currents and phase failure conditions. Identified by part number 1SAZ421201R1004, this relay belongs to the trusted ABB TA200DU thermal overload relay series, engineered for reliable motor protection in industrial automation and control systems.

Designed for heavy-duty applications, the TA200DU-175 features an adjustable current range of 135 to 175 A, making it suitable for large industrial motors and demanding process equipment. The relay provides accurate thermal protection while allowing direct mounting onto compatible ABB contactors for simplified installation and efficient panel design.

The unit includes trip class 10A protection, integrated STOP and TEST buttons, selectable manual or automatic reset modes, and auxiliary signalling contacts for seamless integration into motor starter circuits and automation systems. Its temperature compensated design ensures reliable operation in varying industrial environments.

Key Advantages

• Reliable thermal overload protection for industrial motors.
• 135–175 A adjustable current range for high-current applications.
• Protection against motor overload and phase failure.
• Trip class 10A suitable for standard motor starting applications.
• Compact direct mounting onto ABB block contactors.
• Manual or automatic reset selectable.
• Integrated TEST and STOP controls for diagnostics and maintenance.

Key Features

• ABB TA200DU thermal overload relay series.
• 135–175 A adjustable setting range.
• 3-pole thermal overload relay.
• Trip class 10A motor protection.
• Integrated 1 NC trip contact.
• Integrated 1 NO signalling contact.
• Manual or automatic reset selection.
• Temperature compensated thermal tripping.
• Trip-free release mechanism with indication.
• Direct connection to ABB contactors.

Technical Specifications

• Manufacturer: ABB
• Series: TA200DU
• Model: TA200DU-175
• Part number: 1SAZ421201R1004
• Product type: Thermal overload relay
• Current setting range: 135–175 A
• Rated operational current: 175 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 housing
• 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. 0.78 kg

Advanced Motor Protection for Industrial Applications

Thermal overload relays monitor motor current and disconnect the motor circuit when overload conditions or phase imbalance are detected. This prevents excessive motor heating, reduces downtime and helps extend motor service life in demanding industrial environments.

The ABB TA200DU series is commonly used in industrial motor starters, process control systems and heavy-duty automation equipment where dependable motor protection is essential. Its compact design and direct contactor mounting simplify installation and maintenance within control panels.

Typical Applications

• Industrial motor starters and MCC systems.
• Large pumps and compressor systems.
• Conveyor and material handling equipment.
• Heavy-duty manufacturing machinery.
• Industrial process automation systems.
• OEM machine building and control panels.

Trusted by Industrial Automation Engineers

ABB thermal overload relays are widely trusted across industrial automation, manufacturing and process industries for dependable motor protection, operational reliability and long-term performance.