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ABB t16-3.1 thermal overload relay 2.3a - 3.1a

ABB t16-3.1 thermal overload relay 2.3a – 3.1a

ABB T16-3.1 thermal overload relay with adjustable 2.3 to 3.1 A current range designed for motor overload and phase failure protection in industrial automation systems.

SKU: 1SAZ711201R1033Alt SKU: T16-3.1MPN: 1SAZ711201R1033
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Why Choose the ABB T16-3.1 Thermal Overload Relay?

The ABB T16-3.1 Thermal Overload Relay (1SAZ711201R1033) 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 T16 thermal overload relay series, it delivers reliable motor protection while helping minimise downtime and extend equipment life in demanding industrial environments.

Engineered for direct connection to compatible ABB mini and block contactors, the T16-3.1 offers fast installation and dependable performance. Features including temperature compensation, selectable automatic or manual reset, trip indication and integrated auxiliary contacts ensure efficient operation across a wide range of motor control applications.

With an adjustable current range of 2.3 to 3.1 A and Trip Class 10 protection, the ABB 1SAZ711201R1033 is ideal for protecting industrial motors used in conveyors, pumps, compressors, fans, processing equipment and automated machinery.

Key Advantages

  • Reliable thermal overload protection for three-phase motors.
  • Adjustable current setting from 2.3 to 3.1 A.
  • Protects against motor overload and phase failure.
  • Trip Class 10 provides rapid motor protection.
  • Selectable automatic or manual reset.
  • Direct mounting to compatible ABB contactors for simple installation.

Key Features

  • ABB T16 thermal overload relay series.
  • Current adjustment range: 2.3 to 3.1 A.
  • Trip Class 10 overload protection.
  • Integrated temperature compensation.
  • 1 NO + 1 NC auxiliary contacts.
  • Trip-free mechanism with STOP function.
  • Visible trip indication.
  • Automatic or manual reset selection.
  • Direct mounting onto ABB B6, B7 and AS series contactors.

Reliable Motor Protection for Industrial Applications

Thermal overload relays monitor motor current and disconnect the control circuit when sustained overload conditions occur. This protects motors against overheating, insulation damage and premature failure while improving the reliability and service life of industrial equipment.

The ABB T16 series is widely used in motor starters and control panels where dependable overload protection and simple integration with ABB contactors are required. Its compact design and robust construction make it suitable for OEM machinery and industrial automation systems.

Typical Applications

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

Technical Specifications

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Compatible With AS09–AS16, B6–B7
Mounting Type Direct mount on contactor
Device Type Thermal Overload Relay
Current Range 2.3–3.1 A
Trip Class Class 10
Current 3.1 A
Phase Three Phase
IP Rating IP20
Series T16 Thermal Overload Relays
Product code 1SAZ711201R1033
Product type Thermal overload relay
Setting range 2.3–3.1 A
Rated operational current AC-3 3.1 A
Trip class Class 10
Number of protected poles 3
Auxiliary contacts 1 NO + 1 NC
Rated operational voltage main circuit 690 V AC
Rated insulation voltage 690 V
Rated impulse withstand voltage 6 kV
Control circuit voltage 600 V AC/DC
Frequency 50 / 60 Hz
Degree of protection IP20
Connection type Screw terminals
Mounting type Direct mounting to contactor
Width 45 mm
Height 76.7 mm
Depth 53.5 mm
Weight approx. 0.10 kg
Ambient operating temperature -25 °C to +60 °C
Standards IEC/EN 60947-1, IEC/EN 60947-4-1, IEC/EN 60947-5-1

Frequently Asked Questions

What is the ABB T16-3.1 used for?

The T16-3.1 protects three-phase electric motors against overload conditions and phase failure, helping prevent motor damage and unplanned downtime.

What current range does this overload relay support?

The relay features an adjustable overload setting range of 2.3 to 3.1 A.

Does the relay include auxiliary contacts?

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

Can I select manual or automatic reset?

Yes. The relay supports both manual and automatic reset modes, allowing flexibility for different motor control applications.

How is the ABB T16-3.1 installed?

The relay mounts directly onto compatible ABB mini and block contactors, simplifying motor starter assembly and reducing installation time.

Trusted by Industrial Professionals Worldwide

ABB thermal overload relays are trusted by panel builders, machine manufacturers and maintenance engineers worldwide for dependable motor protection, long-term reliability 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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