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Transparent Schneider Electric LR3D365 overload relay with screw clamp terminals

Schneider Electric

Schneider Electric LR3D365 Overload Relay 48-65A Class 10 690V AC

SKU CH-FQS3-8X5JB

Thermal overload relay protects 3-pole motors at 48–65 A with Class 10 trip and 690 V AC rating

  • TypeIEC, Class 10 w/o Single Phase Sensitivity
  • ColorTransparent
  • Thermal overload protection for motors up to 65 A
  • Trip class 10A ensures rapid response to fault currents
  • Wide 48–65 A adjustment range fits varied loads
  • Rated 690 V AC for industrial power systems
  • Direct contactor mounting with screw-clamp terminals simplifies installation

Schneider Electric LR3D365 overload relay

The Schneider Electric LR3D365 is a thermal overload relay designed to protect three-phase motors from excessive current. It mounts directly onto a compatible TeSys Deca contactor, making it suitable for industrial control panels and motor-starter assemblies where reliable overload protection is required.

Adjustable 48 to 65 ampere trip range

The single specification that decides fit is the adjustable current setting spanning 48 A to 65 A with a Class 10A trip characteristic. The relay operates at up to 690 V AC and provides one normally-open and one normally-closed auxiliary contact for signalling or interlocking. Screw clamp terminals accept standard wiring for secure connections.

Thermal protection under sustained load

Under continuous overload the thermal element heats progressively, tripping within the Class 10A time band rather than instantly. Automatic and manual reset modes allow the operator to choose between unattended restart and deliberate intervention after the motor cools. The IEC construction without single-phase sensitivity suits balanced three-phase loads where phase-loss detection is handled elsewhere.

Highlights

  • Thermal overload protection for motors up to 65 A
  • Trip class 10A ensures rapid response to fault currents
  • Wide 48–65 A adjustment range fits varied loads
  • Rated 690 V AC for industrial power systems
  • Direct contactor mounting with screw-clamp terminals simplifies installation

Specifications

BrandSchneider Electric
ModelLR3D365
TypeIEC, Class 10 w/o Single Phase Sensitivity
ColorTransparent

Questions about this item

What does the 48 to 65 A setting range mean once the relay is installed on a motor circuit?

The relay protects the motor by tripping when the current exceeds the dial setting you choose between 48 A and 65 A, using a Class 10 thermal curve that allows normal start-up surges.

How does the 690 V AC rating limit the circuits this relay can be used on?

The 690 V AC maximum voltage rating means the relay can be applied on any three-phase system up to that voltage, but it must not be used on higher-voltage networks.

What contactor series does the direct-mount design fit without extra hardware?

The relay mounts directly onto Schneider Electric TeSys Deca contactors, using the built-in screw clamp terminals for both power and the 1 NO / 1 NC auxiliary contacts.

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