Overload Relay | OLR ( Schneider )

Overload Relay Schneider 7-10 Amps

Make : Schneider Electric

Schneider Electric offers a range of thermal overload relays, primarily within their TeSys LRD and TeSys Deca series, designed for motor protection. A common example is the LRD14, which provides a thermal protection adjustment range of 7-10 Amps. These relays are crucial for safeguarding 3-phase motors from damage caused by overcurrent’s, overheating, and phase failures.

Key features

• Adjustable Current Range: The 7-10 Amp setting allows for precise configuration based on the specific motor’s full load current (FLA).
• Tripping Class 10A: This classification ensures a fast trip response (typically within 10 seconds under overload conditions), minimizing motor damage.
• Differential Device: Many models offer phase failure and load unbalance detection, providing comprehensive protection.
• Reset Options: Users can typically select between manual and automatic reset functions.
• Auxiliary Contacts: These relays often include auxiliary contacts (e.g., 1 NO + 1 NC) for fault signaling, enabling integration into control circuits.
• Mounting Flexibility: They are designed for direct mounting to Schneider Electric TeSys D contactors (e.g., LC1D09-D38), creating a compact motor starter, and can also be mounted separately on DIN rails or plates with accessories.
• Compliance: Schneider overload relays adhere to various international standards, including IEC, UL, and CSA.

The transparent cover and sealable settings help prevent tampering, ensuring the chosen protection parameters remain secure. These robust and reliable relays are essential for various industrial and commercial applications, ensuring the longevity and safe operation of electric motors.

 Schneider’s 7-10 Amp overload relays, particularly the LRD14, it’s worth noting their robust construction and user-friendly features. They typically include a test button for simulating a trip, along with separate red stop and blue reset push-buttons for local control. Temperature compensation (−20 to 60∘C) ensures reliable operation across varied environments.

The screw clamp terminals facilitate secure wiring, while their compact design allows for seamless integration into motor control panels, saving space and simplifying installation.