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ABB t16-4.2 thermal overload relay 3.1a - 4.2a

ABB t16-4.2 thermal overload relay 3.1a – 4.2a

ABB T16-4.2 thermal overload relay with adjustable current range from 3.1 to 4.2 A, designed for motor protection in industrial automation and motor starter applications.

SKU: 1SAZ711201R1035Alt SKU: T16-4.2MPN: 1SAZ711201R1035
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Why Choose the ABB T16-4.2 Thermal Overload Relay?

The ABB T16-4.2 Thermal Overload Relay (1SAZ711201R1035) is a high-quality 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 provides reliable and fast motor protection, helping to maximise equipment uptime and extend motor service life in industrial applications.

Designed for direct mounting onto compatible ABB mini and block contactors, the T16-4.2 offers straightforward installation and dependable performance. Its temperature-compensated design, selectable automatic or manual reset, integrated auxiliary contacts and clear trip indication make it an excellent choice for modern motor control systems.

With an adjustable current range of 3.1 to 4.2 A and Trip Class 10 protection, the ABB 1SAZ711201R1035 is ideal for protecting industrial motors used in conveyors, pumps, compressors, fans, packaging machinery and manufacturing equipment.

Key Advantages

  • Reliable thermal overload protection for three-phase motors.
  • Adjustable current setting from 3.1 to 4.2 A.
  • Protects against motor overload and phase failure.
  • Trip Class 10 for rapid motor protection.
  • Automatic or manual reset selectable.
  • Direct mounting onto compatible ABB contactors.

Key Features

  • ABB T16 thermal overload relay series.
  • Current adjustment range: 3.1 to 4.2 A.
  • Trip Class 10 protection.
  • Integrated temperature compensation.
  • 1 NO + 1 NC auxiliary contacts.
  • Trip-free mechanism with STOP function.
  • Visible trip indication.
  • Selectable automatic or manual reset.
  • Direct mounting to compatible ABB B6, B7, AS and VB series contactors.

Reliable Motor Protection for Industrial Applications

Thermal overload relays continuously monitor motor current and disconnect the control circuit when sustained overload conditions occur. This protects motors from overheating, insulation damage and premature failure while improving the reliability and longevity of industrial machinery.

The ABB T16 series is widely specified for motor starters and control panels where dependable overload protection and seamless integration with ABB contactors are essential. Its compact construction makes it suitable for OEM equipment, manufacturing plants and industrial automation systems.

Typical Applications

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

Technical Specifications

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Current 4.2 A
Phase Three Phase
IP Rating IP20
Series T16 Thermal Overload Relays
Product code 1SAZ711201R1035
Product type Thermal overload relay
Current adjustment range 3.1 to 4.2 A
Rated operational current 4.2 A
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
Poles 3-pole

Frequently Asked Questions

What is the ABB T16-4.2 thermal overload relay used for?

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

What current range does the relay support?

The relay has an adjustable overload setting range of 3.1 to 4.2 A.

Does the relay include auxiliary contacts?

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

Can the reset mode be changed?

Yes. The ABB T16-4.2 supports both automatic and manual reset, allowing it to suit different industrial control applications.

How is the relay installed?

The relay mounts directly onto compatible ABB mini and block contactors, providing a compact and efficient motor starter solution.

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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