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Schneider Electric LRD04 overload relay, transparent housing, screw clamp terminals

Schneider Electric

Schneider Electric LRD04 Overload Relay 0.40-0.63 A

SKU CH-QHFJ-GA7PR

Protects motors with 0.40–0.63 A thermal overload relay, 1NO/1NC contacts, 690 V AC rating and screw-clamp terminals

  • TypeIndustrial Electrical Controls & Automation
  • ColorTransparent
  • Thermal overload protection for 0.40-0.63 A motors
  • Trip Class 10A ensures reliable motor protection
  • 690 V AC rating suits industrial power systems
  • Direct contactor mounting simplifies panel assembly
  • Screw clamp terminals provide secure wiring connections

Product Identity

The Schneider Electric LRD04 is a thermal overload relay designed for three-phase motor protection in industrial control panels. It suits maintenance engineers and panel builders who need a direct-mount device for TeSys Deca contactors.

Installation Checks

Verify that the contactor is a compatible TeSys Deca model and that the motor full-load current falls between 0.40 A and 0.63 A. Confirm the control circuit can accommodate screw-clamp terminals and that the supply voltage does not exceed 690 V AC. Ensure the mounting orientation allows access to the manual reset button after a trip event.

Sustained Operation

The relay operates on Trip Class 10A, so it tolerates starting inrush for approximately ten seconds before tripping on a sustained overload. Thermal elements respond to prolonged overcurrent rather than momentary peaks, maintaining protection during continuous duty cycles. The 1NO/1NC auxiliary contacts provide reliable signalling for alarm or shutdown circuits throughout extended run periods.

Highlights

  • Thermal overload protection for 0.40-0.63 A motors
  • Trip Class 10A ensures reliable motor protection
  • 690 V AC rating suits industrial power systems
  • Direct contactor mounting simplifies panel assembly
  • Screw clamp terminals provide secure wiring connections

Specifications

BrandSCHNEIDER ELECTRIC
TypeIndustrial Electrical Controls & Automation
ColorTransparent

Questions about this item

Does the Schneider Electric LRD04 come with mounting hardware or do I need to buy a contactor separately?

The relay mounts directly to a compatible TeSys Deca contactor using screw clamp terminals; the contactor itself is not included and must be purchased separately.

Should I choose this 0.40-0.63 A version or a different current range for my motor?

Select this version only when the motor full-load current falls between .40 A and .63 A; other LRD models cover higher ranges so match the relay to the actual motor rating.

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; the panel supply must not exceed 690 V AC for the device to remain within its rated insulation and trip-class 10A performance.

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