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ABB - Electrification TA80DU42RT - TA80DU-42RT Thermal overload relay Trip class 10A, 29-42A
ABB - Electrification

TA80DU42RT


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Overview

The ABB TA80DU-42RT is a three-pole electromechanical thermal overload relay designed for reliable motor protection against overload and phase failure. This relay features a trip class of 10A and an adjustable current setting range of 29-42A, making it ideal for applications requiring precise thermal monitoring. Its bimetal tripping elements respond directly to motor current, ensuring accurate detection and timely response to overcurrent conditions. The TA80DU-42RT supports both manual and automatic reset for operational flexibility and is phase-loss sensitive, adhering to IEC/EN 60947-4-1 standards for protection against unbalanced loads. It includes TEST and STOP functions for clear trip indication and is temperature compensated for consistent performance. Compatible with ABB AF contactors, this relay operates at a rated operational voltage of up to 690V AC and 440V DC, with a frequency range of 0-400Hz. The auxiliary circuit provides 1 N.O. and 1 N.C. contacts rated for up to 3A (AC-15) and 1.25A (DC-13). Designed for 100% duty time, it supports up to 15 operations per hour without premature tripping. ATEX-certified variants are available for hazardous environments.
  • Trip class 10A for precise thermal monitoring
  • Adjustable current setting range: 29-42A
  • Phase-loss sensitive per IEC/EN 60947-4-1
  • Manual or automatic reset selectable
  • ATEX-certified variants available for hazardous environments

Specifications

Application
Mainly used for controlling 3-phase motors and generally for controlling power circuits up to 690 V AC and 220 V DC. The contactors can also be used for many other applications such as bypass, capacitor switching, lighting, DC power circuits.
Current Rating
29-42 A
Frequency
0-400 Hz
Poles
1 N.O. and 1 N.C.
Series
TA80DU
Size
82x110x108mm
Special Features
TA80DU-42RT Thermal overload relay Trip class 10A, 29-42A
Standard
RoHs, CSA, cUL, CE, GOST
Type
Contactors
Voltage Rating
690 V AC / 440 V DC
Package Dimensions (L x W x H)
5.63 IN x 4.409 IN x 2.402 IN
Package Dimensions (L x W x H)
14.3002 cm x 11.1989 cm x 6.1011 cm
Package Weight (Imperial)
0.970 L
Package Weight (Metric)
0.440 kg
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The NNC75X75WH2 Halogen-Free Wide Slot Wiring Duct is used to route, protect, and manage wires near sensitive electronic equipment and in environments where heat resistance or public safety is a concern. UL 94 flame class of V-0 with a UL recognized continuous-use temperature up to 95 C (203 F). Halogen-Free, Polyphenylene Oxide (PPO). Mounting holes provided. 2.85" x 2.97" (72.4 mm x 75.4 mm) and 6.6' (2 m) long. Cover included. Color White. 5 pieces per package.

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Frequently Asked Questions

What is the trip class of the TA80DU-42RT?

The TA80DU-42RT has a trip class of 10A, ensuring accurate response to overload conditions.

What is the current setting range for this relay?

The current setting range is adjustable between 29A and 42A.

Is the TA80DU-42RT phase-loss sensitive?

Yes, it is phase-loss sensitive according to IEC/EN 60947-4-1 standards.

What reset options are available?

The relay supports both manual and automatic reset for operational flexibility.

What is the maximum operating voltage for this relay?

The relay operates at up to 690V AC and 440V DC.

What are the auxiliary contact ratings?

The auxiliary circuit provides 1 N.O. and 1 N.C. contacts rated for 3A (AC-15) and 1.25A (DC-13).

Is this relay suitable for hazardous environments?

Yes, ATEX-certified variants are available for hazardous environments.

What is the duty cycle of the TA80DU-42RT?

The relay is designed for 100% duty time and supports up to 15 operations per hour without premature tripping.

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