Products

ABB TF140DU-142 Thermal Overload Relay 110-142A 690VAC 250A Fuse Type gG

Product Code: TF140DU-142

  • Rated voltage of 690 VAC
  • Contact config: 1NC+1NO
  • Trip class: Class 10
  • Direct mounting type
  • IP20 protection rating
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Specifications

Product Type Thermal Overload Relay
Brand ABB
Contact Configuration 1NC+1NO
Current Setting Range 110-142 A
Degree of Pollution IP3
Degree of Protection IP20
Depth 126 mm
Electrical Connection Screw
Height 140 mm
Mounting Type Direct
Number of Auxiliary Change-Over Contacts 1
Number of Poles 3
Operational Temperature -25 to 55 deg C
Power Loss 2.3 W
Rated Current 0.25 A
Rated Frequency 50/60 Hz
Rated Impulse Withstand Voltage 8 kV
Rated Insulation Voltage 690 V
Rated Voltage 690 VAC
Release Class Class 10 A
Reset Function Automatic
Setting Range 110-142 A
Short Circuit Protective Devices 250 A, Fuse Type gG
Standards and Approvals IEC/EN 60947-1, IEC/EN 60947-4-1, IEC/EN 60947-5-1, UL 60947-1, UL 60947-4-1
Storage Temperature -40 to 70 deg C
Suitable For Use With AF116-AF140 Contactors
Trip Class Class 10
Width 89 mm

Description

<p>When selecting a thermal overload relay for your industrial applications, understanding the key specifications is crucial. This particular relay offers robust protection and reliability for your electrical systems, making it an ideal choice for various commercial and industrial settings.</p><p>Designed to operate efficiently at a rated voltage of 690 VAC, this thermal overload relay ensures compatibility with high-voltage environments. It supports a rated current of 0.25 A and operates seamlessly across both 50 Hz and 60 Hz frequencies, offering flexibility in diverse power systems.</p><p>A notable feature is its low power loss of just 2.3 W, contributing to energy efficiency while maintaining optimal performance. The relay&amp;#39;s impressive rated impulse withstand voltage of 8 kV adds an extra layer of security against transient overvoltages.</p><p>The contact configuration includes one normally closed (1NC) and one normally open (1NO) contact, providing versatile switching options tailored to specific application needs. With a setting range between 110 A and 142 A, users can adjust the relay according to their precise requirements.</p><p>This device falls under Trip Class 10, ensuring timely disconnection during overload conditions to protect connected equipment from damage. Its degree of protection IP20 makes it suitable for indoor use where dust ingress is minimal.</p><p>Installation is straightforward with direct mounting capabilities. The compact dimensions—width of 89 mm, height of 140 mm, and depth of 126 mm—allow for space-efficient integration into existing setups.</p><p>Operationally resilient across temperatures from -25&amp;#176;C to +55&amp;#176;C, this relay can endure demanding environmental conditions without compromising functionality. Additionally, it suits AF116-AF140 contactors perfectly.</p><p>Compliance with international standards such as IEC/EN and UL ensures that this product meets rigorous safety and performance benchmarks globally recognized in the industry.</p><p>For enhanced safety during short circuits, the recommended protective devices include a fuse type gG rated at 250 A. Electrical connections are secured using screw terminals, ensuring reliable connectivity throughout its lifecycle.</p><p>The automatic reset function simplifies maintenance by restoring normal operations post-tripping without manual intervention—a valuable feature in busy industrial environments where downtime must be minimized.</p><p>Overall storage temperature ranges from -40&amp;#176;C to +70&amp;#176;C ensure that the unit remains unaffected by extreme external conditions when not in operation or transit.</p>

Documents

  • IPD Product Catalogue

    IPD Product Catalogue V17
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