TF42-38

Name: TF42-38
Brand: ABB
SKU: TF42-38

The ABB TF42-38 thermal overload relay offers reliable motor protection with a setting range of 35-38A. It is suitable for 600V AC/DC auxiliary circuits and 690V AC main circuits, featuring automatic/manual reset and a 3-pole configuration.

Product ModelTF42-38

Material Number1SAZ721201R1055

Product ID86943

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Reliable Motor ProtectionThe TF42-38 thermal overload relay provides fast and reliable protection for motors, ensuring safe operation in various applications.
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2. Wide Voltage CompatibilitySuitable for 600V AC/DC auxiliary circuits and 690V AC main circuits, this relay offers flexibility in different voltage environments.
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3. Automatic/Manual ResetThe relay features both automatic and manual reset options, allowing for easy operation and maintenance.
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4. Compact DesignWith dimensions of 70.5mm length, 45mm width, and 88.3mm height, the TF42-38 is designed to be compact and space-efficient.
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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

0.145 kg

Setting Range

35 ... 38 A

Rated Operational Voltage

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

5. Compliance with International StandardsThe relay is compliant with IEC/EN 60947-1/60947-4-1/60947-5-1 standards, ensuring high-quality performance and safety.

Rated Operational Current (Ie)

38 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 2.5 ... 10 mmÂ² Flexible with Ferrule 1/2x 1.5 ... 2.5 mmÂ² Flexible with Insulated Ferrule 1/2x 1.5 ... 6 mmÂ² Flexible 1/2x 2.5 ... 4 mmÂ² Flexible 1/2x 4 ... 6 mmÂ² Rigid 1/2x 1.5 ... 2.5 mmÂ² Rigid 1/2x 2.5 ... 10 mmÂ²

Tightening Torque

Auxiliary Circuit 1 ... 1.2 NÂ·m Main Circuit 2.5 ... 2.7 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 2.1 ... 2.8 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 14-6 AWG Stranded 1/2x 14-6 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 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