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Transparent thermal overload relay with screw terminals and 3-pole configuration

Schneider Electric

Schneider Electric LR2K0304 Thermal Overload Relay 0.36-0.54A 3-Pole

SKU CH-FJND-DPH0W

A thermal overload relay protects motors with a 0.36–0.54 A trip range, 3 poles, 1 NO/NC auxiliary contact, and screw-clamp terminals for direct contactor mounting

  • Product typeIndustrial Electrical Controls & Automation
  • Product colorTransparent
  • Protects motors from 0.36 A to 0.54 A overloads
  • Trip Class 10A reacts quickly to excess current
  • Auto and manual reset options restore operation fast
  • Screw-clamp terminals give secure wiring connections
  • 3-pole design fits TeSys Deca and K contactors

Schneider Electric LR2K0304 Thermal Overload Relay

The Schneider Electric LR2K0304 is a three-pole thermal overload relay designed for motor protection in industrial control panels. It suits electricians and maintenance engineers who need reliable overload detection for compatible contactors. The unit mounts directly to TeSys Deca and TeSys K series contactors using screw clamp terminals. It provides adjustable thermal protection for circuits operating within the specified current range.

Trip Class 10A with Auto and Manual Reset

This relay operates with a Trip Class 10A response for timely overload tripping. The current setting adjusts between 0.36 A minimum and 0.54 A maximum to match motor full-load ratings. Auxiliary contacts include one normally open and one normally closed contact rated for 250 V DC and 690 V AC signalling circuits. Reset functionality supports both automatic and manual modes for operational flexibility.

Direct Contactor Mount for TeSys Deca and TeSys K

The LR2K0304 replaces worn or outdated thermal overload relays on existing TeSys Deca or TeSys K contactor installations. The jump is worth it when the original relay no longer holds calibration or when the motor load has changed to fall within the 0.36 A to 0.54 A range. It is not suited for applications requiring electronic overload features or different mounting configurations.

How it compares

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Price $53.99
Pricier than about 58% of the 3,838 comparable items (median $41.99).

Specifications

Product
Brand nameSCHNEIDER ELECTRIC
Product typeIndustrial Electrical Controls & Automation
Product colorTransparent

Questions about this item

How is the LR2K0304 mounted and what wiring step is often missed?

It mounts directly onto a compatible TeSys Deca or TeSys K contactor; the step often missed is securing both the main power and the 1NO/1NC auxiliary contacts under the screw-clamp terminals.

What maintenance or replacement will the relay need over time?

The thermal element is calibrated for the 0.36 to 0.54 A range and Trip Class 10A; after repeated overload trips the calibration can drift, so the complete relay should be replaced rather than adjusted.

What limit appears first during sustained overloads?

The thermal trip activates at the 0.54 A maximum setting following Trip Class 10A timing; the 250 V DC and 690 V AC signalling-circuit ratings are not the limiting factor.

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