SCHNEIDER ELECTRIC LRD21 12-18A thermal overload relay

The Schneider Electric LRD21 Thermal Overload Relay is part of Schneider’s TeSys range, designed to protect electrical motors from overloads, phase failures, and other potential electrical faults. It works by detecting excess current and heat, ensuring motor protection in industrial applications.

Key Specifications:

• Current Range: 12-18 A (adjustable)
• Mounting: Designed to be used with contactors like the TeSys D range (LC1D contactors).
• Thermal Protection: Provides class 10 protection (trips the motor after 10 seconds under overload conditions).
• Manual and Automatic Reset: You can manually or automatically reset the relay after it trips.
• Tripping Indicator: Visual indication when the relay has tripped.
• Auxiliary Contacts: 1 normally open (NO) + 1 normally closed (NC) contact for control circuit integration.
• Mounting Type: Direct mounting under contactor or separate mounting with accessories.

This relay is typically used for applications involving motor control and protection, ensuring equipment longevity and reducing the risk of electrical failures.