ABB TF42-5.7 Thermal Overload Relay, 3.5–5 Amps

Description

The ABB TF42-5.7 is a thermal overload relay designed to provide reliable overcurrent protection for three-phase motors and motor starter assemblies. With an adjustable current setting range of 3.5 to 5 amps, this relay guards against damaging overload conditions, phase loss, and motor burnout in commercial and industrial HVAC applications.

Key Features

• Adjustable current setting range: 3.5–5 A
• Designed for use with ABB AF and A-series contactors in the TF42 series
• Provides thermal overload and phase-loss protection
• Manual and automatic reset modes for flexible operation
• Compact, DIN-rail compatible design for panel integration
• Trip indicator for fast fault identification
• Suitable for three-phase motor protection in HVAC, refrigeration, and light industrial applications

Application

The TF42-5.7 is ideal for protecting fractional and small integral horsepower motors found in air handling units, fan coil units, pumps, and compressor assemblies. It mounts directly onto compatible ABB contactors, simplifying wiring and reducing panel space requirements.

Specifications

• Model: TF42-5.7
• Brand: ABB
• Current Range: 3.5–5 A
• Type: Thermal Overload Relay
• Series: TF42
• Reset: Manual / Automatic
• Protection: Overload & Phase Loss