Overload protection relay ABB T16-0.23, IP20, 45×53.5×76.7 mm, 100 g

ABB T16-0.23 is an electromechanical thermal overload protection relay engineered to protect motors and power circuits from sustained overcurrent and phase faults. The device incorporates temperature compensation, a trip class 10 response, selectable automatic or manual reset, a trip-free mechanism and clear trip indication. With IP20 protection and compact dimensions of 45 × 53.5 × 76.7 mm, this relay is suitable for mounting directly on mini or block contactors within control panels and motor starter assemblies.

Advantages

The relay delivers reliable and fast motor protection through a proven thermal element and temperature compensation that reduce nuisance trips. Its selectable reset mode (automatic or manual) and a separate trip contact (NC) plus a signal contact (NO) enable flexible integration with control circuits. A dedicated STOP function and visible trip indication simplify maintenance and troubleshooting while the trip-free mechanism ensures safe disconnection under overload conditions.

Suitable for

• Protection of small to medium three-phase and single-phase motors in industrial and commercial equipment
• Integration into motor starters and control panels where compact footprint is required
• Applications requiring temperature-compensated overload protection and selectable reset modes

Key specifications

• Protection type: thermal overload (electromechanical)
• Trip class: 10
• IP rating: IP20
• Reset: selectable automatic or manual
• Contacts: trip contact (normally closed), signal contact (normally open)
• Additional functions: temperature compensation, trip-free mechanism, STOP function, trip indication
• Mounting: direct mounting to mini or block contactors / panel mounting in motor starters
• Dimensions: 45 × 53.5 × 76.7 mm
• Weight: approx. 100 g

How to use

Install the ABB T16-0.23 directly onto compatible mini or block contactors or in the designated space within a motor starter assembly following the equipment manufacturer’s mounting instructions. Connect the main circuit conductors through the relay’s power terminals and wire the trip (NC) and signal (NO) contacts into the control circuit as required. Set the desired reset mode (automatic or manual) and adjust any current-setting features according to the motor nameplate and application requirements. Verify correct wiring and perform functional checks before placing the motor into service.

Usage recommendations

Use the relay within its intended ambient temperature range and ensure current settings match the motor’s rated current to achieve reliable protection. Combine with appropriate contactors and properly sized wiring; perform periodic inspections to check for wear, correct mounting, and clear trip indication functionality.