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Transparent rectangular overload relay with screw terminals and auxiliary contacts

Schneider Electric

Schneider Electric LR2K0312 Overload Relay 3.7-5.5 A 1NC/1NO

SKU CH-5SVB-25GQX

Thermal overload relay protects motors at 3.7–5.5 A with 1NO/1NC auxiliary contacts and screw-clamp terminals

  • Product typeIndustrial Electrical Controls & Automation
  • Product colorTransparent
  • Protects motors from overheating with 3.7-5.5 A thermal trip range
  • Alerts control circuits via 1NO/1NC auxiliary contacts at 250 V DC
  • Resets automatically or manually after Trip Class 10A operation
  • Mounts directly onto TeSys Deca and TeSys K contactors
  • Secures wiring with screw-clamp terminals rated for 690 V AC

Schneider Electric LR2K0312 Overload Relay

This overload relay protects three-phase motor circuits in industrial automation panels. It mounts directly to compatible TeSys Deca and TeSys K contactors for compact integration. Electrical engineers and panel builders use it to prevent motor damage from sustained overcurrent conditions. The unit ships new and ready for installation in control cabinets.

Adjustable 3.7 A to 5.5 A Thermal Trip Range

The relay interrupts the circuit when current exceeds the set value between 3.7 A and 5.5 A. Trip Class 10A defines the response time for overload events. Auxiliary contacts provide one normally open and one normally closed circuit for signalling or interlocking. Maximum voltage ratings are 690 V AC and 250 V DC on the signalling circuit.

Direct Contactor Mounting With Screw Clamp Terminals

Mounting directly onto the contactor reduces wiring and saves panel space. Screw clamp terminals accept solid or stranded conductors for secure connections. Auto and manual reset modes allow flexible recovery after a trip. Verify the contactor series matches TeSys Deca or TeSys K before ordering to ensure mechanical fit.

How it compares

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Price $54.99
Pricier than about 59% 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

What does the 3.7-5.5 A current range mean for motor protection?

The relay trips when motor current exceeds the set value between 3.7 A and 5.5 A, protecting windings from sustained overloads. Trip Class 10A defines the response time for a 7.2× overcurrent.

What do the 250 V DC and 690 V AC ratings apply to?

Those voltages are the maximum for the auxiliary signalling circuit contacts (1NO/1NC), not the main power poles. They set the safe switching limit for control wiring.

How does the relay mount and connect to a contactor?

It mounts directly onto a compatible TeSys Deca or TeSys K contactor and uses screw-clamp terminals for wiring.

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