Description
The Schneider Electric (Square D) LRD3363 is a TeSys D series thermal overload relay engineered to deliver dependable motor protection across a wide range of commercial and industrial HVAC applications. With an adjustable current range of 63 to 80 amps, this overload relay safeguards motors from damage caused by sustained overcurrent conditions, phase loss, and thermal overloads.
Key Features
- Adjustable current setting range: 63–80 amps
- Part of the Schneider Electric TeSys D series — designed for direct mounting on compatible TeSys D contactors
- Integral manual and automatic reset modes for flexible system operation
- Built-in trip indicator for fast, visual fault identification
- Phase-loss sensitivity for enhanced motor protection
- Positive safety action: opens the control circuit upon trip
- Normally open (NO) and normally closed (NC) auxiliary contacts included
- Compact, modular design for easy installation and replacement
Application
The LRD3363 is ideal for protecting three-phase motors in HVAC systems including large air handlers, chiller compressors, cooling tower fans, and pump motors. Its wide adjustment range and reliable thermal bimetal technology make it a trusted choice for mechanical contractors and building automation professionals.
Why Choose the LRD3363
- Direct plug-in compatibility with TeSys D series LC1-D contactors eliminates additional wiring
- Adjustable trip class allows tuning to specific motor characteristics
- Durable construction rated for demanding industrial environments
- Backed by Schneider Electric’s global quality and support network
Specifications
- Brand: Schneider Electric (Square D)
- Model / SKU: LRD3363
- Series: TeSys D
- Current Range: 63–80 A
- Type: Thermal Overload Relay
- Reset: Manual / Automatic
- Auxiliary Contacts: 1 NO + 1 NC
- Phase Loss Sensitive: Yes
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