SCHNEIDER Overload Relay: Thermal Protection, 3 Poles, 1NO/1NC, Phase Loss Sensitivity
The SCHNEIDER Overload Relay: Thermal Protection (SKU LRD21, MPN LRD21) is a 3-pole IEC thermal overload relay with integrated bimetallic elements, rated for 12 A – 18 A and a maximum voltage of 690V AC. It features…
SKU 3G-OTH-40535
Also listed as: LRD 21 · LRD-21
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The SCHNEIDER Overload Relay: Thermal Protection (SKU LRD21, MPN LRD21) is a 3-pole IEC thermal overload relay with integrated bimetallic elements, rated for 12 A – 18 A and a maximum voltage of 690V AC. It features a 1NO/1NC auxiliary contact form, screw clamp terminals, and phase loss sensitivity. This relay is compatible with TeSys Deca contactors (18 to 38 Amp models) and requires no external thermal units.
Frequently Asked Questions
What is the SCHNEIDER LRD21 overload relay used for?
The SCHNEIDER LRD21 overload relay provides thermal protection for three-phase motors by monitoring current and preventing overheating. It is used in industrial motor control applications, compatible with TeSys Deca contactors (18 to 38 Amp models), and includes phase loss sensitivity for enhanced motor protection.
What are the specifications of the SCHNEIDER LRD21 overload relay?
The SCHNEIDER LRD21 is a 3-pole IEC thermal overload relay rated for 12 A to 18 A with a maximum voltage of 690V AC. It features a 1NO/1NC auxiliary contact form, screw clamp terminals, integrated bimetallic elements, and phase loss sensitivity. It is compatible with TeSys Deca contactors and requires no external thermal units.
Where to buy the SCHNEIDER LRD21 overload relay worldwide?
You can source the SCHNEIDER LRD21 overload relay through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply genuine SCHNEIDER components for motor protection applications.
How to select the correct SCHNEIDER overload relay for a motor?
To select the correct SCHNEIDER overload relay, match the relay's current range (e.g., 12 A to 18 A for LRD21) to the motor's full-load current. Ensure compatibility with your contactor series, such as TeSys Deca. Verify voltage rating (690V AC) and required features like phase loss sensitivity. Consult the motor nameplate and application needs.
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3G Electric supplies SCHNEIDER iec thermal overload relays. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
