LRD21
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Buy Schneider Electric LRD21 – Product Overview
The Schneider Electric LRD21 is a TeSys Deca thermal overload relay engineered for reliable motor protection in industrial automation systems. Operating at 690V AC with a thermal setting range of 12–18A and Class 10A tripping characteristics, this single-phase differential thermal overload relay integrates seamlessly with LC1D contactors (LC1D18, LC1D25, LC1D32, LC1D38). Built for high-fault short-circuit current ratings and equipped with screw clamp terminals, the LRD21 delivers robust protection against motor overload conditions across North America, Europe, and international industrial markets.
Schneider Electric LRD21 Features & Benefits
- Thermal setting range: 12–18A with Class 10A tripping
- Rated operational voltage: 690V AC (0–400 Hz)
- Differential thermal overload protection for 3-phase motors up to 7.5kW @ 400V
- IP20 protection rating with screw clamp terminals
- Blue reset pushbutton and red stop pushbutton for operator safety
- Temperature compensation: −20 to +60°C without derating
- Compact dimensions: 45mm width × 70mm depth, 0.124 kg
- Phase failure sensitivity at 130% of rated current
- 6kV rated impulse withstand voltage for reliability
Schneider Electric LRD21 Specifications & Datasheet
Access the official Schneider Electric LRD21 specifications to ensure compatibility with your motor protection circuit. The relay features screw clamp terminals rated for 2.5 N·m (power circuit) and 1.7 N·m (control circuit) tightening torque, supporting cable sizes from 1–6 mm² (solid) and 1.5–10 mm² (flexible). Ambient operating range is −20 to +60°C; storage range extends to −60 to +70°C. Flame retardance meets UL 94 V1 standards; fire resistance rated at 850°C per IEC 60695-2-1. The device includes 5A conventional free air thermal current for signalling circuits and 1.5A permissible current at 240V AC-15.
Schneider Electric LRD21 Applications in Industrial Automation
The Schneider Electric LRD21 is widely deployed in motor drive and control systems, factory automation, production line protection, and machine automation environments. Its differential thermal overload protection makes it ideal for three-phase motor circuits requiring Class 10A trip characteristics. Common applications include pump motors, conveyor systems, compressor protection, and industrial control panels across manufacturing and process industries worldwide.
Schneider Electric LRD21 Price & Worldwide Availability
View Schneider Electric LRD21 pricing and check real-time stock status for global dispatch. As a worldwide industrial parts distributor with operations in Canada and the United States, LeadTime.ca sources genuine OEM thermal overload relays with fast international shipping. Contact our team for bulk order pricing, export documentation, and competitive rates on factory-grade automation components.
Why Buy Schneider Electric Products from LeadTime.ca
Every product on LeadTime.ca is genuine, authentic OEM, and factory-tested—sourced from verified Schneider Electric suppliers. We specialize in export-ready automation components with global shipping available to North America, Europe, Asia, and international industrial markets. Our commitment to quality, rapid fulfillment, and transparent pricing ensures you receive reliable motor protection equipment backed by manufacturer warranties and technical support.
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