Why Choose the ABB 1SAZ741201R1023 TF42-1.0B Thermal Overload Relay?
The ABB 1SAZ741201R1023 is a reliable TF42-1.0B thermal overload relay designed to provide effective motor protection against overload conditions and phase failure in industrial automation, motor control panels and railway applications. As part of the ABB TF42-B thermal overload relay range, it delivers dependable electromechanical protection with compact installation and proven performance.
This overload relay protects motors by monitoring current flow through its three-pole bimetallic elements and tripping when overload conditions occur. The device includes adjustable overload settings, temperature compensation, phase-loss sensitivity, selectable manual or automatic reset, TEST and STOP functions and clear trip indication for efficient maintenance and fault diagnosis.
With an adjustable current range of 0.74–1.0 A, a 1 A rated operational current and Class 10 trip protection, the ABB 1SAZ741201R1023 TF42-1.0B is suitable for protecting small industrial motors used in machinery, pumps, fans and automation systems.
Key Advantages
- Reliable ABB thermal overload relay for motor protection applications.
- 0.74–1.0 A adjustable overload protection range for accurate motor protection.
- Class 10 thermal trip characteristic suitable for standard motor starting applications.
- Protection against motor overload and phase failure conditions.
- Temperature compensation ensures reliable operation across changing environments.
- Suitable for direct mounting with compatible ABB contactors.
Key Features
- ABB TF42-B thermal overload relay series.
- 0.74–1.0 A adjustable current setting range.
- 1 A rated operational current.
- 3-pole motor protection design.
- Class 10 trip protection.
- 1 normally closed auxiliary contact.
- 1 normally open auxiliary contact.
- Manual or automatic reset selection.
- Integrated TEST and STOP functions.
- Trip indication for fast fault identification.
Reliable Motor Protection for Industrial Systems
Thermal overload relays such as the ABB TF42-1.0B provide essential protection for electric motors by disconnecting control circuits when excessive current causes overheating. This helps prevent motor damage, improves equipment reliability and supports safe operation of industrial machinery.
The ABB TF42-B range is designed for machine builders, automation engineers and industrial electricians requiring compact motor protection devices with accurate adjustment, reliable fault detection and straightforward integration with ABB contactor systems.
Typical Applications
- Industrial motor control panels.
- Pumps and fan systems.
- Machine building and OEM equipment.
- Conveyor and material handling systems.
- Industrial automation installations.
- Railway and transport-related motor applications.
