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ABB t16-5.7 thermal overload relay 4.2a - 5.7a

ABB t16-5.7 thermal overload relay 4.2a – 5.7a

ABB T16-5.7 thermal overload relay with adjustable current range from 4.2 to 5.7 A, designed for industrial motor protection and automation systems.

SKU: 1SAZ711201R1038Alt SKU: T16-5.7MPN: 1SAZ711201R1038
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Why Choose the ABB T16-5.7 Thermal Overload Relay?

The ABB T16-5.7 Thermal Overload Relay (1SAZ711201R1038) is a dependable electromechanical motor protection device designed to safeguard three-phase motors against overload conditions and phase failure. As part of the proven ABB T16 thermal overload relay series, it delivers reliable motor protection while helping to reduce downtime and extend the operational life of industrial equipment.

Designed for direct mounting onto compatible ABB mini and block contactors, the T16-5.7 combines straightforward installation with dependable performance. Features including temperature compensation, selectable automatic or manual reset, integrated auxiliary contacts, trip indication and a trip-free mechanism make it ideal for demanding industrial motor control applications.

With an adjustable current range of 4.2 to 5.7 A and Trip Class 10 protection, the ABB 1SAZ711201R1038 is well suited to protecting motors used in conveyors, pumps, compressors, fans, machine tools and automated manufacturing equipment.

Key Advantages

  • Reliable thermal overload protection for three-phase motors.
  • Adjustable current setting from 4.2 to 5.7 A.
  • Protects against motor overload and phase failure.
  • Trip Class 10 for rapid and reliable motor protection.
  • Automatic or manual reset selectable.
  • Direct mounting onto compatible ABB contactors.

Key Features

  • ABB T16 thermal overload relay series.
  • Current adjustment range: 4.2 to 5.7 A.
  • Trip Class 10 protection.
  • Integrated temperature compensation.
  • 1 NO + 1 NC auxiliary contacts.
  • Trip-free mechanism with STOP function.
  • Visual trip indication.
  • Automatic or manual reset selection.
  • Direct mounting onto ABB B6, BC6, B7, BC7, VB6, VB7 and AS series contactors.

Reliable Motor Protection for Industrial Applications

Thermal overload relays continuously monitor motor current and disconnect the control circuit if prolonged overload or phase loss is detected. This helps prevent motor overheating, insulation failure and premature equipment wear, improving reliability and reducing maintenance costs.

The ABB T16 series is widely used in motor starters and industrial control panels, providing dependable overload protection while integrating seamlessly with ABB contactors for OEM machinery and automation systems.

Typical Applications

  • Motor starters and electrical control panels.
  • Industrial conveyors.
  • Pumps and pumping systems.
  • Fans and ventilation equipment.
  • Compressors.
  • Packaging and processing machinery.
  • Machine tools.
  • OEM automation equipment.

Technical Specifications

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Current 5.7 A
Mounting Type Direct mount on contactor
Device Type Thermal Overload Relay
Current Range 4.2–5.7 A
Trip Class Class 10
Reset Type Manual / Automatic
Phase Three Phase
IP Rating IP20
Poles 3-pole
Rated operational current 5.7 A
Current adjustment range 4.2 to 5.7 A
Series T16 Thermal Overload Relays
Product code 1SAZ711201R1038
Product type Thermal overload relay
Trip class Class 10
Number of poles 3
Auxiliary contacts 1 NO + 1 NC
Rated insulation voltage 690 V AC
Auxiliary circuit voltage 600 V AC/DC
Protection rating IP20
Reset method Automatic or manual
Mounting type Direct mounting / DIN rail
Terminal type Screw terminals
Dimensions (H × W × D) approx. 76.7 × 45 × 53.5 mm
Operating temperature approx. -25 °C to +60 °C
Weight approx. 0.1 kg

Frequently Asked Questions

What is the ABB T16-5.7 thermal overload relay used for?

It protects three-phase electric motors against overload conditions and phase failure, helping prevent overheating and equipment damage.

What current range does this relay support?

The overload relay has an adjustable setting range of 4.2 to 5.7 A.

Does the relay include auxiliary contacts?

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

Can the relay be configured for automatic or manual reset?

Yes. The reset mode is selectable, allowing either automatic or manual reset depending on the application.

Which contactors is the T16-5.7 compatible with?

It mounts directly onto compatible ABB B6, BC6, B7, BC7, VB6, VB7 and AS series contactors.

Trusted by Industrial Professionals Worldwide

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

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