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Transparent rectangular Schneider Electric overload relay with adjustment dial and terminal markings

Schneider Electric

Schneider Electric LRD32 Overload Relay 23 A Min 32 A Max 1NC/1NO Transparent

SKU CH-DZ1X-79BZG

Thermal overload relay protects motors from 16 to 24 amperes with Class 10A calibration

  • TypeIndustrial Electrical Controls & Automation
  • ColorTransparent
  • Protects motor windings with adjustable 16–24 A trip current
  • Works with TeSys D contactors rated 9–38 A
  • Differential thermal design detects line overcurrents quickly
  • Multi-standard certified for IEC, UL, CSA, CCC, EAC, ATEX, Marine
  • Transparent housing allows visual inspection of internal components

Overload Relay for Motor Starters

The Schneider Electric LRD32 overload relay pairs with TeSys D contactors rated from 9 A to 38 A to create a motor starter. It protects motor windings by detecting line overcurrents and signalling the contactor to disconnect power. The unit is supplied new in a transparent housing.

Sustained-Load Behaviour

The relay uses a differential thermal mechanism calibrated to Class 10A, with an adjustable trip setting between 16 A and 24 A. Under continuous overload the thermal elements respond progressively rather than in a single burst, allowing the contactor to open before winding damage occurs.

Build and Connections

Multi-standard certification covers IEC, UL, CSA, CCC, EAC, ATEX and Marine approvals, indicating suitability for industrial panels and harsh environments. The transparent cover lets technicians verify the trip setting visually, while 1NC/1NO auxiliary contacts integrate directly into control circuits for status feedback.

Highlights

  • Protects motor windings with adjustable 16–24 A trip current
  • Works with TeSys D contactors rated 9–38 A
  • Differential thermal design detects line overcurrents quickly
  • Multi-standard certified for IEC, UL, CSA, CCC, EAC, ATEX, Marine
  • Transparent housing allows visual inspection of internal components

Specifications

BrandSCHNEIDER ELECTRIC
TypeIndustrial Electrical Controls & Automation
ColorTransparent

Questions about this item

Does the LRD32 overload relay generate noticeable heat or noise when running continuously at 32 A?

The relay is a passive thermal device with no moving parts, so it operates silently and its temperature rise stays within IEC Class 10A limits at the 32 A maximum setting.

What contactor must I already own for the LRD32 to mount and function correctly?

It is designed to mount directly on Schneider Electric TeSys D contactors rated from 9 A up to 38 A.

Will the LRD32 work with an older TeSys D contactor I already have installed?

Yes, provided the contactor falls within the 9 A to 38 A TeSys D range, the relay will clip on and provide Class 10A overload protection.

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