SQUARE D
SQUARE D LR3D07L Overload Relay 1.6-2.5 A 690 V AC
Thermal overload relay protects motors with 1.6 to 2.5 A range, 690 V AC rating, and 1NO/1NC auxiliary contacts
- Protects motors from overload with 1.6-2.5 A thermal trip range
- Handles up to 690 V AC for industrial power systems
- Trip Class 20 provides timed protection matched to motor start-up
- Auto and manual reset options restore operation after a trip
- Direct contactor mounting with screw clamp terminals simplifies installation
Thermal overload relay for motor circuits
The Schneider Electric LR3D07L is a thermal overload relay designed for three-phase motor protection. It provides adjustable current settings between 1.6 A and 2.5 A with a 690 V AC maximum voltage rating. The unit features a Trip Class 20 response and 1NO/1NC auxiliary contacts for control circuit signalling. It mounts directly onto compatible TeSys Deca contactors using screw clamp terminals.
Direct contactor mounting simplifies panel layout
The relay attaches straight to the contactor without separate DIN-rail hardware, reducing panel space and wiring time. Screw clamp terminals accept standard cable ferrules for secure connections. Auto and manual reset modes give maintenance flexibility after a trip event. The IEC-style construction suits industrial control panels built to IEC standards.
Suits panels protecting small three-phase motors
This relay suits OEMs and maintenance teams fitting overload protection on motors drawing 1.6 A to 2.5 A full-load current. Panels requiring a different current range, a higher trip class or a relay that mounts independently of the contactor should select an alternative device. The 690 V AC rating covers most industrial control voltages.
Highlights
- Protects motors from overload with 1.6-2.5 A thermal trip range
- Handles up to 690 V AC for industrial power systems
- Trip Class 20 provides timed protection matched to motor start-up
- Auto and manual reset options restore operation after a trip
- Direct contactor mounting with screw clamp terminals simplifies installation
Specifications
| Brand | SCHNEIDER ELECTRIC |
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Questions about this item
What is the maximum continuous current the LR3D07L can carry before the thermal element trips?
The relay trips when current exceeds the 2.5 A maximum setting, which is the upper limit of its adjustable 1.6 A to 2.5 A range.
How much heat does the overload relay add to the enclosure during all-day operation at full load?
As a thermal overload device, it dissipates heat proportional to the square of the load current; at the 2.5 A setting the heating is modest and typically handled by the contactor's own mounting plate.
Which contactor series must I already own to mount this relay directly?
It mounts directly onto Schneider Electric TeSys Deca contactors using the integrated screw-clamp terminals.
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