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Schneider Electric LRD21 | TeSys LRD Thermal Overload Relay 12-18A Class 10A

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Certification

"ACH has proven to be a reliable partner. Their products are genuine and high-quality, with competitive prices and on-time delivery. We trust them as our long-term supplier in automation."

—— Mohammed Al-Farsi, Procurement

"For us, cost efficiency and authenticity are key. ACH helps reduce expenses while ensuring reliable quality and timely supply, making them a strong partner in our operations."

—— Procurement Manager

"For us, cost efficiency and authenticity are key. ACH helps reduce expenses while ensuring reliable quality and timely supply, making them a strong partner in our operations."

—— Supply Chain Director

"ACH offers quick response, flexible solutions, and fair pricing. The products are always genuine and reliable, and their friendly support makes cooperation smooth."

—— Operations Manager

"ACH provides genuine products with stable quality and fair pricing. Their fast response and reliable delivery give us confidence to continue working with them."

—— Engineering Manager

"We value ACH for their consistent quality and competitive pricing. Deliveries are always reliable, and their professional support makes procurement much easier for our team."

—— Procurement Head

Schneider Electric LRD21 | TeSys LRD Thermal Overload Relay 12-18A Class 10A

Large Image : Schneider Electric LRD21 | TeSys LRD Thermal Overload Relay 12-18A Class 10A Get Best Price

Product Details:

Place of Origin:	FR
Brand Name:	Schneider Electric
Certification:	ATEX
Model Number:	LRD21
Document:	ACH-AB-P+F-E+H-IFM-ASCO-YOK...WA.pdf

Payment & Shipping Terms:

Minimum Order Quantity:	1
Price:	Negotiable
Packaging Details:	carton
Delivery Time:	Negotiable
Payment Terms:	T/T,XT,ALIPAY
Supply Ability:	100pcs per month

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Detailed Product Description

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Ambient Temperature:

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Schneider Electric TeSys LRD overload relay

thermal overload relay 12-18A

class 10A thermal relay

Schneider Electric LRD21 | TeSys LRD Thermal Overload Relay 12-18A Class 10A

Schneider Electric LRD21 (TeSys LRD) thermal overload relay. 12-18A adjustable range, Class 10A trip, 690V AC, 1NO+1NC contacts. For motor protection with LC1D contactors.

Product Overview

The Schneider Electric LRD21 is a thermal overload relay from the TeSys LRD series (also known as TeSys Deca). It provides motor protection (overload, phase unbalance) for 3-phase AC motors in the 12–18 A full load current range. Designed for direct mounting under TeSys D contactors (e.g., LC1D18 to LC1D38), it features ambient temperature compensation, manual reset, and a compact form factor for industrial control panels.

Technical Specifications (Electrical & Protection)

Parameter	Specification
Manufacturer / Series	Schneider Electric / TeSys LRD (Deca)
Model / Part Number	LRD21
Product Type	Thermal Overload Relay (Differential, Bi-metallic)
Rated Operational Voltage (Ue)	690 V AC (50/60 Hz, 0–400 Hz range)
Current Setting Range (Ir)	12 – 18 A (Adjustable via dial)
Trip Class	Class 10A (per IEC 60947-4-1)
Phase Failure Sensitivity	Trips at ~130% Ir on two phases
Auxiliary Contacts	1 NO + 1 NC (Signaling Circuit)
Control Circuit Rating	1.5 A at 240V AC-15; 0.1 A at 250V DC-13

Technical Specifications (Mechanical & Environmental)

Parameter	Specification
Compatible Contactors	LC1D18, LC1D25, LC1D32, LC1D38 (TeSys D)
Mounting	Direct under contactor, DIN rail, or plate
Connection Type	Screw Clamp Terminals
Terminal Wire Range	Power: 1.5–10 mm²; Control: 1–2.5 mm²
Dimensions (W×H×D)	45 × 66 × 70 mm
IP Rating	IP20
Operating Temperature	-20 °C to +60 °C (with compensation)
Reset Type	Manual (Blue push-button), Red stop button

Key Features

Class 10A Tripping: Fast response (≈10 seconds) at 7.2× Ir for motor stall protection.
Ambient Compensation: Maintains trip accuracy across -20°C to +60°C environments.
Visual Trip Indication: Clear flag/button indication for quick fault diagnosis.
Screw Clamp Reliability: Robust terminals for power and control wiring.

Applications

Protection of 3-phase AC motors (pumps, fans, conveyors)
Industrial machine control panels
Motor starter combinations with TeSys D contactors

Schneider Electric LRD21 | TeSys LRD Thermal Overload Relay 12-18A Class 10A 0

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About ACH

Founded in 2012, ACH is a top-tier distributor of industrial automation products, supplying genuine devices from leading brands like ABB, P+F, E&H, AB, MTL to emerging markets worldwide. Our mission is to provide 100% Genuine products at the most competitive prices, helping customers reduce costs and strengthen their market position.

Frequently Ask & Questions

Are preferential prices available?

Long-term brand partners can get competitive product prices. At the same time, ACH controls the profit per order to 5%, providing the most competitive prices.

Are the Products Genuine OEM Units?

Yes, all products from ACH are certified genuine OEM units. We acquire our inventory through official OEM channels and trusted third-party suppliers, ensuring every item is authentic and reliable.

How will you arrange shipment?

We'll handle the shipping for you. Through our partnerships, we can secure competitive rates with major carriers like FedEx, DHL, TNT, and UPS, ensuring a smooth and cost-effective delivery.

What is the warranty of goods?

One-year Warranty.

How long is the logistics cycle of the product?

Products are divided into spot and futures, and the delivery period of different brands of products is also different. For details, please contact the ACH business manager.

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