Schneider EasyPact TVS Thermal Overload Relay LRE21

Schneider EasyPact TVS Thermal Overload Relay LRE21 — Precise Motor Protection (12–18 A)

The Schneider EasyPact TVS Thermal Overload Relay LRE21 is a compact and reliable three-phase thermal overload protection device from Schneider Electric’s trusted EasyPact TVS series. Designed to protect motors from prolonged overcurrent, phase loss, and unbalanced load conditions, this overload relay delivers dependable performance for industrial, commercial, and workshop electrical systems in India.

🔌 What Is the LRE21 Thermal Overload Relay?

The LRE21 is a three-pole differential thermal overload relay with an adjustable thermal protection range of 12 – 18 A. It continuously monitors current through all three phases and disconnects the motor circuit when sustained overloads or abnormal phase conditions are detected, preventing overheating and reducing risk of motor damage. Built to meet IEC 60947-4-1 Class 10A tripping standards, it balances tolerance for start-up current surges with dependable overload response.

This relay is suitable for direct mounting with compatible EasyPact TVS contactors (e.g., LC1E18–LC1E38), simplifying panel design and installation while maintaining compact motor starter assemblies.

🛠️ Key Features & Benefits

• Adjustable Current Range (12 – 18 A): Fine-tune overload protection to match your motor’s full-load current for reliable safeguarding.

• Class 10A Tripping Curve: Complies with IEC standards for dependable response to extended overloads and phase faults.

• Three-Pole Differential Protection: Monitors all three phases to detect overload, unbalanced loads, and phase loss.

• Auxiliary Contacts (1 NO + 1 NC): Enables signalling output for control panels, alarms, or PLC systems.

• Manual & Automatic Reset: Choose reset mode based on maintenance strategy.

• Trip Indicator Flag: Visual flag signal quickly shows when a trip has occurred, speeding up troubleshooting.

• Secure Screw-Clamp Terminals: Ensures strong, vibration-resistant wiring for both power and control circuits.

• Space-Saving Design: Compact form factor fits easily in motor starter panels with EasyPact TVS contactors.

⚙️ Why Choose the LRE21 Thermal Overload Relay?

Thermal overload relays like the Schneider LRE21 are essential safety components in motor control systems. They help you:

• Protect motors from overheating and prevent winding damage

• Reduce unplanned downtime with early overload and phase-fault detection

• Enhance electrical safety in control panels and starter circuits

• Extend motor and system lifespan through dependable protection

• Simplify panel layouts with direct mounting on compatible contactors

Whether you’re building a new motor starter panel or upgrading existing systems, the LRE21 delivers dependable performance in a compact and efficient design.

📌 Typical Applications

The Schneider EasyPact TVS Thermal Overload Relay LRE21 is perfect for:

• Motor starter assemblies with EasyPact TVS contactors

• Industrial pumps, compressors & fan motors

• Conveyor and material handling circuits

• HVAC motor drives and ventilation systems

• Automated machinery requiring reliable three-phase motor protection