TF42-3.1

Name: TF42-3.1
Brand: ABB
SKU: TF42-3.1

The ABB TF42-3.1 thermal overload relay provides reliable motor protection with adjustable current settings, automatic or manual reset options, and compliance with IEC/EN 60947 standards. Suitable for three- and single-phase applications, it ensures safe operation in various environments.

Product ModelTF42-3.1

Material Number1SAZ721201R1033

Product ID83980

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Reliable Motor ProtectionThe ABB TF42-3.1 thermal overload relay is designed to protect motors from overcurrent and phase failures, ensuring safe and reliable operation.
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2. Adjustable Current SettingWith adjustable current settings, the TF42-3.1 allows for precise overload protection tailored to your specific motor requirements.
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3. Automatic or Manual ResetChoose between automatic or manual reset options to suit your application needs, ensuring minimal downtime and efficient operation.
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4. Compliance with IEC/EN 60947 StandardsThe TF42-3.1 meets the stringent standards of IEC/EN 60947, ensuring high-quality performance and reliability in your electrical systems.
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Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Product Net Width

45 mm

Product Net Height

88.3 mm

Product Net Depth / Length

70.5 mm

Product Net Weight

0.13 kg

Setting Range

2.3 ... 3.1 A

Rated Operational Voltage

Auxiliary Circuit 600 V AC/DC Main Circuit 690 V AC Main Circuit 600 V DC

5. Versatile ApplicationSuitable for both three- and single-phase applications, the TF42-3.1 thermal overload relay offers flexibility in various industrial settings, from small to large-scale operations.

Rated Operational Current (Ie)

3.1 A

Rated Frequency (f)

Auxiliary Circuit 50 Hz Auxiliary Circuit 60 Hz Auxiliary Circuit DC Main Circuit 50 Hz Main Circuit 60 Hz

Rated Impulse Withstand Voltage (Uimp)

Auxiliary Circuit 6 kV Main Circuit 6 kV

Rated Insulation Voltage (Ui)

690 V

Number of Poles

Number of Auxiliary Contacts NC

Number of Auxiliary Contacts NO

Number of Protected Poles

Conventional Free-air Thermal Current (Ith)

Auxiliary Circuit NC 6 A Auxiliary Circuit NO 4 A

Rated Operational Current AC-15 (Ie)

(120 V) NC 3 A (120 V) NO 0.5 A (240 V) NC 3 A (240 V) NO 0.5 A (400 V) NC 0.75 A (400 V) NO 0.5 A (500 V) NC 0.75 A (500 V) NO 0.5 A

Rated Operational Current DC-13 (Ie)

(125 V) NC 0.55 A (125 V) NO 0.55 A (24 V) NC 1.25 A (24 V) NO 1.25 A (250 V) NC 0.27 A (250 V) NO 0.27 A (500 V) NC 0.15 A (500 V) NO 0.15 A (60 V) NC 0.55 A (60 V) NO 0.55 A

Degree of Protection

IP20

Pollution Degree

Connecting Capacity Auxiliary Circuit

Flexible with Ferrule 1/2x 0.75 ... 2.5 mmÂ² Flexible with Insulated Ferrule 1x 0.75 ... 2.5 mmÂ² Flexible with Insulated Ferrule 2x 0.75 ... 1.5 mmÂ² Flexible 1/2x 0.75 ... 1 mmÂ² Flexible 1/2x 1 ... 2.5 mmÂ² Rigid 1/2x 0.75 ... 4 mmÂ²

Connecting Capacity Main Circuit

Flexible with Ferrule 1/2x 0.75 ... 4 mmÂ² Flexible with Insulated Ferrule 1/2x 0.75 ... 4 mmÂ² Flexible 1/2x 0.75 ... 4 mmÂ² Rigid 1/2x 0.75 ... 4 mmÂ²

Tightening Torque

Auxiliary Circuit 1 ... 1.2 NÂ·m Main Circuit 1.5 ... 2.5 NÂ·m

Wire Stripping Length

Auxiliary Circuit 9 mm Main Circuit 12 mm

Recommended Screw Driver

Main Circuit Pozidriv 2

Power Loss

at Rated Operating Conditions per Pole 1.1 ... 2.0 W

Suitable For

AF09 AF12 AF16 AF26 AF30 AF38

Standards

IEC/EN 60947-1 IEC/EN 60947-4-1 IEC/EN 60947-5-1 UL 60947-1 UL 60947-4-1 IEC 60335-2-40 A2L

Maximum Operating Voltage UL/CSA

Main Circuit 600 V AC

Contact Rating UL/CSA

(NC:) B600 (NC:) Q600 (NO:) Q600 (NO:) D300

Connecting Capacity Main Circuit UL/CSA

Flexible 1/2x 18-10 AWG Stranded 1/2x 18-10 AWG

Connecting Capacity Auxiliary Circuit UL/CSA

Flexible 1/2x 18-12 AWG Stranded 1/2x 18-12 AWG

Tightening Torque UL/CSA

Auxiliary Circuit 9 ... 11 inÂ·lb Main Circuit 13 ... 22 inÂ·lb

Ambient Air Temperature

Operation -25 ... +60 Â°C Operation Compensated -25 ... +60 Â°C Storage -50 ... +80 Â°C

Ambient Air Temperature Compensation

Yes

Maximum Operating Altitude Permissible

2000 m

Resistance to Shock acc. to IEC 60068-2-27

11 ms Pulse 25g

Resistance to Vibrations

5g 3 ... 150 Hz

RoHS Status

Following EU Directive 2011/65/EU and Amendment 2015/863 July 22, 2019

Toxic Substances Control Act - TSCA

2CMT2023-006525

Object Classification Code

ETIM 4