SQUARE D
SQUARE D Overload Relay 4-6 A Trip Class 20 690 V AC
Protects motors from 4 A to 6 A with Class 20 thermal trip at 690 V AC
- Thermal protection for motors with 4–6 A adjustment range
- Trip Class 20 suits standard motor starting profiles
- 690 V AC rating covers industrial supply voltages
- 1NO/1NC auxiliary contacts enable status signalling and control
- Direct contactor mounting with screw-clamp terminals speeds installation
SQUARE D Overload Relay 4-6 A
This SQUARE D overload relay protects motors with a thermal trip mechanism rated for 4 A to 6 A. It mounts directly onto compatible TeSys Deca contactors using screw-clamp terminals. The unit carries a maximum voltage rating of 690 V AC and provides both 1NO and 1NC auxiliary contacts for control circuits. Trip class 20 defines its response time under overload conditions.
Installation And Common Issues
Direct mounting onto the contactor simplifies wiring and reduces panel space. Screw-clamp terminals accept standard ferrules or bare wire for secure connections. Auto and manual reset modes are selectable on the device. A frequent issue occurs when the relay is set below the motor's actual running current, causing nuisance tripping during start-up or load changes.
Ideal For Motor Protection Panels
This relay suits panels protecting three-phase motors within the 4 A to 6 A range where IEC-style thermal protection is specified. It is not intended for applications requiring electronic overload features such as phase-loss detection or communication interfaces. Builders needing higher current settings or different trip classes should select an alternative model. Panels using non-TeSys contactors will require a different mounting solution.
Highlights
- Thermal protection for motors with 4–6 A adjustment range
- Trip Class 20 suits standard motor starting profiles
- 690 V AC rating covers industrial supply voltages
- 1NO/1NC auxiliary contacts enable status signalling and control
- Direct contactor mounting with screw-clamp terminals speeds installation
Specifications
| Brand | SCHNEIDER ELECTRIC |
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Questions about this item
How can I confirm the relay is protecting the motor correctly after wiring it to the contactor?
The unit trips on Class 20 thermal curves at 4–6 A; a successful start without nuisance tripping and a clear trip on sustained overcurrent shows it is working.
What comes in the box and what must I source separately?
The relay with 1NO/1NC auxiliary contacts and screw-clamp terminals is supplied; a compatible TeSys Deca contactor for direct mounting and control wiring are not included.
Which trip-class version should I select for my application?
Only Trip Class 20 is offered in this 4–6 A, 690 V AC frame; choose it when the motor’s acceleration time matches a Class 20 thermal profile.
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