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ABB tf42-0.23 thermal overload relay 0.17a - 0.23a

ABB tf42-0.23 thermal overload relay 0.17a – 0.23a

ABB TF42-0.23 thermal overload relay with adjustable current range from 0.17 to 0.23 A, designed for industrial motor protection and automation systems.

SKU: 1SAZ721201R1009Alt SKU: TF42-0.23MPN: 1SAZ721201R1009
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Why Choose the ABB TF42-0.23 Thermal Overload Relay?

The ABB TF42-0.23 Thermal Overload Relay (1SAZ721201R1009) is a dependable electromechanical motor protection device designed to protect three-phase motors against overload conditions and phase failure. As part of the proven ABB TF42 thermal overload relay series, it delivers reliable motor protection while helping to minimise downtime, improve equipment reliability and extend motor service life.

Designed for direct mounting onto compatible ABB AF09 to AF38 contactors, the TF42-0.23 offers simple installation and dependable operation. It incorporates temperature compensation, selectable automatic or manual reset, integrated auxiliary contacts, a trip-free mechanism, STOP function and clear trip indication for efficient motor protection in industrial environments.

With an adjustable current range of 0.17 to 0.23 A and Trip Class 10 protection, the ABB 1SAZ721201R1009 is ideal for protecting small three-phase motors used in laboratory equipment, instrumentation, conveyors, pumps, fans and industrial automation systems.

Key Advantages

  • Reliable thermal overload protection for three-phase motors.
  • Adjustable overload setting from 0.17 to 0.23 A.
  • Protects against motor overload and phase failure.
  • Trip Class 10 provides rapid overload protection.
  • Automatic or manual reset selectable.
  • Direct mounting onto ABB AF09 to AF38 contactors.

Key Features

  • ABB TF42 thermal overload relay series.
  • Current adjustment range: 0.17 to 0.23 A.
  • Trip Class 10 overload protection.
  • Integrated temperature compensation.
  • Phase failure sensitivity.
  • 1 NO + 1 NC auxiliary contacts.
  • Trip-free mechanism with STOP and TEST functions.
  • Automatic or manual reset selection.
  • Direct mounting onto ABB AF09 to AF38 contactors.

Reliable Motor Protection for Industrial Applications

Thermal overload relays continuously monitor motor current and disconnect the control circuit whenever prolonged overload or phase failure is detected. This protects motors from overheating, insulation damage and premature failure while improving equipment reliability and reducing maintenance costs.

The ABB TF42 series is widely used in industrial motor starters and electrical control panels where dependable overload protection and seamless compatibility with ABB AF contactors are essential.

Typical Applications

  • Industrial motor starters.
  • Electrical control panels.
  • Laboratory equipment.
  • Conveyors and material handling systems.
  • Small pumps and fans.
  • Machine tools.
  • OEM automation equipment.
  • Industrial process machinery.

Technical Specifications

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Mounting Type Direct mount on contactor
Device Type Thermal Overload Relay
Current Range 0.17–0.23 A
Trip Class Class 10
Reset Type Manual / Automatic
Current 0.23 A
Phase Three Phase
IP Rating IP20
Series TF42 Thermal Overload Relays
Product code 1SAZ721201R1009
Product type Thermal overload relay
Current adjustment range 0.17 to 0.23 A
Rated operational current 0.23 A
Trip class Class 10
Number of poles 3
Auxiliary contacts 1 NO + 1 NC
Rated insulation voltage 690 V AC
Rated operational voltage Auxiliary circuit 600 V AC/DC
Protection rating IP20
Reset method Automatic or manual
Mounting type Direct attachment to contactor
Terminal type Screw terminals
Dimensions (H × W × D) approx. 88.3 × 45 × 70.5 mm
Operating temperature approx. -25 °C to +60 °C
Weight approx. 0.13 kg
Poles 3-pole

Frequently Asked Questions

What is the ABB TF42-0.23 used for?

It protects small three-phase motors against overload conditions and phase failure, helping prevent motor damage and unexpected downtime.

What current range does the TF42-0.23 support?

The relay has an adjustable overload setting range of 0.17 to 0.23 A.

Does this relay include auxiliary contacts?

Yes. It includes 1 normally open (NO) and 1 normally closed (NC) auxiliary contact.

Can the relay be reset manually?

Yes. The reset mode can be selected for either automatic or manual operation depending on the application.

Which contactors is the TF42-0.23 compatible with?

It is designed for direct mounting onto compatible ABB AF09 to AF38 contactors.

Trusted by Industrial Professionals Worldwide

ABB TF42 thermal overload relays are trusted by machine builders, panel manufacturers and maintenance engineers worldwide for dependable motor protection, long service life and seamless integration into industrial control systems.

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We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products. 

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