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Schneider Electric LRD21 Thermal Overload Relay
The LRD21 is a single-phase, 18A differential thermal overload relay designed for motor control applications. It features screw clamp terminals and high short-circuit current ratings (SCCRs), ensuring safe fault handling. Compatibility with LC1D18, LC1D25, LC1D32, and LC1D38 contactors makes it versatile for motor drive systems. It includes an under contactor mounting support, a blue reset pushbutton, and a red stop button. With an IP20 rating and a rated impulse withstand voltage of 6kV, this relay provides reliable protection for industrial motor control environments.
Schneider Electric LRD21 Thermal Overload Relay Specifications:
- Rated current: 18A
- Rated voltage: 690 V AC 0...400 Hz
- Protection rating: IP20
- Rated impulse withstand voltage: 6kV
- Temperature range: -20°C to 60°C
- Mounting support: Plate, rail, or under contactor
- Control circuit: screw clamp terminals 1-2.5 mm², flexible or solid wire
- Power circuit: screw clamp terminals 1.5-10 mm², flexible or solid wire
- Tripping threshold: 1.14 +/- 0.06 Ir
- Auxiliary contacts: 1NO+1NC
- Screw clamp torque: 1.7 N.m for control, 2.5 N.m for power circuit
- Dimensions: Height 66 mm, Width 45 mm, Depth 70 mm
- Weight: 0.27 lb (0.124 kg)
- Standards: IEC 60947-4-1, UL, CSA
Buy the Schneider Electric Series LRD Differential Thermal Overload Relay: LRD21
Purchase the Schneider Electric LRD21 thermal overload relay online today to ensure reliable motor protection. This compact, easy-to-install relay features screw clamp terminals for secure wiring, high short-circuit current ratings, and compliance with top industry standards. It’s ideal for motor control systems requiring robust overload protection with IP20 rating and a rated impulse withstand voltage of 6kV. Available with auxiliary contact options and compatible with various contactors, the LRD21 guarantees durability and precise protection for industrial applications.
Get Schneider Electric LRD21 today—built for precision and long-lasting durability in motor protection systems.
Frequently Asked Questions
Where can I buy Schneider Electric LRD21?
You can click on the BUY or RFQ button to purchase LRD21 from an authorized Schneider Electric distributor.
How do I troubleshoot issues or seek technical support for part LRD21?
You can download the LRD21 datasheet or visit the Schneider Electric website for support.
Who is the manufacturer of LRD21?
Schneider Electric