Schneider Thermal Overload Relay LRD32

Schneider Electric LRD32 Thermal Overload Relay — Reliable Motor Protection for Medium Loads

The Schneider Thermal Overload Relay LRD32 is a high-quality industrial protection device from Schneider Electric’s TeSys LRD series, engineered to safeguard three-phase motors against prolonged overcurrent, phase loss, and imbalance conditions. With a robust build and adjustable settings, this relay offers dependable protection for motor control panels, starter assemblies, and machinery installations across industrial and commercial electrical systems in India.

🔌 What Is the Schneider LRD32 Thermal Overload Relay?

The LRD32 Thermal Overload Relay is a three-pole thermal overload protection unit designed to work with compatible Schneider contactors (such as LC1D25, LC1D32, and LC1D38) to create a complete and reliable motor starter solution. It continuously monitors current in all three phases and disconnects the circuit when sustained overload, phase loss, or unbalanced conditions occur, protecting your motor from overheating and potential damage.

This relay features an adjustable current protection range of 23 – 32 A, making it well-suited for medium-capacity motors typically found in industrial applications. Its Class 10A tripping characteristic ensures balanced performance—tolerating normal start-up currents while responding reliably to sustained overloads.

🛠️ Key Features & Benefits

• Adjustable Current Range (23 – 32 A) – Tailor protection precisely to your motor’s full-load current.

• Class 10A Trip Characteristic – Conforms to IEC standards for dependable overload response and operational safety.

• Three-Pole Monitoring – Provides balanced protection across all three phases of the motor supply.

• Phase Loss & Unbalance Detection – Trips promptly on unsafe conditions to prevent motor damage and downtime.

• Manual/Automatic Reset & Test Button – Offers flexible reset options and easy in-place testing without disconnecting power.

• Auxiliary Contacts (1NO + 1NC) – Enables fault signalling and integration with control panels or automation systems.

• Secure Screw-Clamp or EverLink Terminals – Ensures reliable, vibration-resistant wiring for power and control circuits.

• Flexible Mounting Options – Can be mounted under compatible contactors or on DIN-rail/panel for easy integration.

These features combine to provide precise, dependable protection while making installation and maintenance straightforward for electricians and panel builders.

⚙️ Why Use the LRD32 Thermal Overload Relay?

Thermal overload relays like the LRD32 are essential in three-phase motor systems. By detecting prolonged overcurrents and abnormal phase behavior early, this relay helps you:

• Prevent costly motor overheating and winding damage

• Reduce unplanned downtime and repair costs

• Enhance electrical system safety with early fault response

• Extend motor and equipment life through reliable protection

• Integrate easily with Schneider motor control components for compact installations

📌 Typical Applications

The Schneider Thermal Overload Relay LRD32 is ideal for:

• Motor starter panels in industrial and commercial settings

• Pumps, compressors, and fan systems

• Conveyor and material handling equipment

• HVAC motor control and ventilation drives

• Production machinery and automated electrical cabinets

Its versatile protection profile makes it a practical addition wherever medium-capacity three-phase motors are used.