RT1J – ABB | THERMAL OVERLOAD RELAY

Description

The ABB RT1J Thermal Overload Relay is a motor protection component designed for compatible ABB C-2000 IEC contactors and starters. With an adjustable current range of 1.8 to 2.7 A, it helps protect motors against overload conditions when properly selected and adjusted for the motor’s rated current.

Designed for use in motor starter assemblies, the RT1J supports Type 2 coordination when paired with the specified Class J fuses. This coordination helps ensure that, under short-circuit conditions, the starter assembly presents no danger to personnel or the installation and remains suitable for further use, subject to the applicable manufacturer requirements. The relay is suitable for industrial motor control applications where coordinated overload protection and dependable starter operation are required.

Key Features

• Adjustable Current Range: Provides overload protection for applications with current settings from 1.8 to 2.7 A.
• C-2000 Starter Compatibility: Designed for use with compatible ABB C-2000 IEC contactors and motor starters.
• Thermal Overload Protection: Helps protect motors against excessive current over time.
• Type 2 Coordination: Supports Type 2 coordination when used with the specified contactor or starter assembly and Class J fuses.
• Class J Fuse Compatibility: Specified for coordination with LPJ-SP or AJT Class J fuses, with a maximum fuse rating of 4 A as listed by ABB.
• Industrial Motor Control: Suitable for compatible starter assemblies in industrial equipment and electrical control panels.

Specifications