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Schneider TeSys LRD33 Thermal Overload Relays

Manufacturer: Schneider Electric
Model:
TeSys LRD33 Thermal Overload Relays
Compatible Contactor: LC1D50-95
Setting Current: 55A~104A
Trip Class: 10A

Product Description

The Schneider Electric TeSys LRD33 is a bimetal thermal overload relay designed to protect AC/DC motors from damage caused by overloads, phase failures, prolonged starting, and stalling. It integrates seamlessly with TeSys D-series contactors (D40–D95) via direct plug-in mounting or standalone DIN rail installation using the LA7D3064 adapter.

Standard Features

Rated for motors up to 32A, it features Class 10 tripping for fast response in medium-duty applications. With robust construction and compliance with IEC/EN 60947-4-1 standards, it ensures reliable motor protection in industrial environments.

  • Manual/Auto Reset: Selectable via toggle switch for flexible fault recovery

  • Ambient Temperature Compensation: Maintains accuracy across -20°C to +60°C

  • Trip Indication: Visual flag for immediate fault identification

  • Adjustable Current Setting: Dial for precise calibration (23–32A range)

  • Test/Stop Buttons: Facilitate functional checks and emergency shutdown

  • Auxiliary Contacts: 1 NO + 1 NC for control circuit signaling

  • Universal Compatibility: Works with AC/DC systems and supports independent or contactor-mounted installation

Technical Specifications

ModelRated Current (A)Compatible ContactorThe Number OF Poles
LRD332217-25LC1D80 LC1D953
LRD335323-32
LRD335530-40
LRD335737-50
LRD335948-65
LRD336155-70
LRD336363-80
LRD336580-104

 

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