SQUARE D
SQUARE D LRD08L Overload Relay 2.5-4A 3P Class 20 690V
Three-pole thermal overload relay adjustable from 2.5 A to 4 A with Class 20 trip and 690 V AC rating
- Adjustable 2.5–4 A range protects motors precisely
- Trip Class 20 suits standard industrial starting duties
- 690 V AC rating handles high-voltage control circuits
- Auto and manual reset options simplify maintenance
- Direct contactor mounting cuts panel wiring time
Square D LRD08L Thermal Overload Relay
The Square D LRD08L is a thermal overload relay designed to protect three-phase motors from excessive current. It provides a current setting range of 2.5 A to 4 A with a Trip Class 20 response time. The unit mounts directly to compatible TeSys Deca contactors and operates at up to 690 V AC.
Verify Contactor Compatibility And Wiring
Confirm that the contactor in your starter assembly accepts direct-mount IEC-style overload relays from the TeSys Deca series. Ensure the control circuit can accommodate the 1NO/1NC auxiliary contact block for trip signalling. Check that screw-clamp terminals suit the wire gauges used in your panel and that the 690 V AC rating matches your supply voltage.
Suits Panels Using TeSys Deca Starters
This relay suits maintenance engineers and panel builders fitting or replacing overload protection on existing TeSys Deca contactors within the 2.5 A to 4 A range. Installations requiring a different current range, a higher trip class, or a non-direct mounting style should select an alternative device.
Highlights
- Adjustable 2.5–4 A range protects motors precisely
- Trip Class 20 suits standard industrial starting duties
- 690 V AC rating handles high-voltage control circuits
- Auto and manual reset options simplify maintenance
- Direct contactor mounting cuts panel wiring time
Specifications
| Brand | SCHNEIDER ELECTRIC |
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Questions about this item
What comes in the box with the LRD08L overload relay and what else must be purchased separately?
The relay is supplied as a single unit with screw-clamp terminals ready for wiring. A compatible TeSys Deca contactor for direct mounting must be obtained separately.
How do I choose between the 2.5 A and 4 A settings on this Class 20 relay?
The relay is adjustable from 2.5 A to 4 A; set the dial to match the motor's full-load current shown on its nameplate.
What does the 690 V AC rating mean when the relay is installed in a control panel?
It indicates the maximum operational voltage the relay can safely switch and monitor in a three-phase circuit.
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