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Schneider Electric LRD10 overload relay transparent housing 4 to 6 amperes

Schneider Electric

Schneider Electric LRD10 Overload Relay 4-6A Transparent

SKU CH-ET8G-NTC6Q

Protects motors by disconnecting power when current exceeds the 4-6A adjustable range, calibrated to Class 10A

  • TypeIndustrial Electrical Controls & Automation
  • ColorTransparent
  • Adjustable 4-6 A trip current protects motor windings
  • Differential thermal detection disconnects power on overcurrent
  • Compatible with 9-38 A TeSys D contactors for motor starters
  • Multi-standard certified including IEC, UL, CSA, CCC, EAC, ATEX, Marine
  • Class 10A calibration ensures reliable trip timing

Motor starter component

The Schneider Electric LRD10 is a differential thermal overload relay built for industrial motor protection. It pairs with TeSys D contactors rated from 9 to 38 amperes to form a complete motor starter. The unit suits maintenance engineers and panel builders who need reliable overcurrent detection for three-phase motors.

Sustained thermal response

Under continuous load the relay monitors line current and trips when the adjustable setting between 4 and 6 amperes is exceeded. Calibration follows Class 10A timing, so the device reacts to prolonged overloads rather than brief inrush currents. This behaviour helps prevent winding damage during extended fault conditions.

Transparent housing and certifications

The transparent cover allows visual inspection of the trip mechanism and contact status without removing the relay. Multi-standard certification covers IEC, UL, CSA, CCC, EAC, ATEX and Marine approvals, simplifying compliance for panels shipped to multiple jurisdictions. The 1NC/1NO auxiliary contacts integrate directly into control circuits for status signalling.

Highlights

  • Adjustable 4-6 A trip current protects motor windings
  • Differential thermal detection disconnects power on overcurrent
  • Compatible with 9-38 A TeSys D contactors for motor starters
  • Multi-standard certified including IEC, UL, CSA, CCC, EAC, ATEX, Marine
  • Class 10A calibration ensures reliable trip timing

Specifications

BrandSCHNEIDER ELECTRIC
TypeIndustrial Electrical Controls & Automation
ColorTransparent

Questions about this item

Does the LRD10 run hot or draw extra power when protecting a motor continuously?

The relay uses a differential thermal element that only trips on sustained overcurrent; normal operation adds negligible heat and no measurable power draw beyond the contactor coil.

Which contactor must I already have for this 4–6 A overload to mount and work?

It is built for TeSys D contactors rated from 9 A through 38 A, so you need one of those contactors before the LRD10 will function.

Will this overload fit on an older TeSys D contactor I already own?

Yes, the LRD10 mounts directly on any TeSys D contactor in the 9 A to 38 A range, regardless of its age, as long as the contactor frame matches.

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