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Schneider Electric LRD14 overload relay, transparent housing

Schneider Electric

Schneider Electric LRD14 Overload Relay 7-10 A

SKU CH-C97Q-Q7F3X

Thermal overload relay with adjustable 7-10 A trip range for motor protection up to 38 A contactors

  • TypeIndustrial Electrical Controls & Automation
  • ColorTransparent
  • Protects motor windings from overcurrent damage
  • Adjustable trip current from 7 to 10 amperes
  • Class 10A calibrated trip rating for reliable protection
  • Compatible with TeSys D contactors up to 38 amperes
  • Multi-standard certified for IEC, UL, CSA, CCC, EAC, ATEX, Marine

Schneider Electric LRD14 Overload Relay

The Schneider Electric LRD14 is a differential thermal overload relay designed for industrial motor protection. It pairs with TeSys D contactors rated from 9 to 38 amperes to form a complete motor starter. The unit features an adjustable trip current range of 7 to 10 amperes calibrated to Class 10A. Multi-standard certification includes IEC, UL, CSA, CCC, EAC, ATEX and Marine approvals.

Replaces fixed-trip or lower-rated relays

Upgrading to this adjustable 7-10 A relay is worthwhile when motor full-load current falls inside that window and the existing starter uses a TeSys D contactor up to 38 A. The Class 10A trip curve suits standard motor acceleration profiles. It is not for applications requiring a trip setting below 7 A or above 10 A, nor for contactors outside the 9-38 A TeSys D range.

Practical limits of thermal overload protection

Thermal sensing reacts to sustained overcurrent rather than instantaneous short circuits, so a separate short-circuit protective device remains necessary. The relay mounts directly to the contactor, so panel space must accommodate the combined assembly. Ambient temperature compensation is built in, but extreme environments beyond the certified standards may affect trip accuracy.

Highlights

  • Protects motor windings from overcurrent damage
  • Adjustable trip current from 7 to 10 amperes
  • Class 10A calibrated trip rating for reliable protection
  • Compatible with TeSys D contactors up to 38 amperes
  • Multi-standard certified for IEC, UL, CSA, CCC, EAC, ATEX, Marine

Specifications

BrandSCHNEIDER ELECTRIC
TypeIndustrial Electrical Controls & Automation
ColorTransparent

Questions about this item

Which TeSys D contactor current ratings does the LRD14 overload relay fit?

The LRD14 mounts directly on 9 A through 38 A TeSys D contactors to form a motor starter.

How is the trip current set on the LRD14, and what mistake should be avoided?

Turn the adjustment dial to the motor's full-load current between 7 A and 10 A; the common error is leaving it at the factory default instead of matching the motor nameplate.

When should the LRD14 overload relay be replaced after it trips?

Replace the relay if it trips repeatedly without an obvious motor overload, if the reset button fails to latch, or if the contactor it is mounted on is replaced.

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