# Schneider Electric LRD3357 Thermal Overload Relay 37-50A

**URL:** https://aio.lv/en/product--schneider-electric-lrd3357--12445241
**Data updated:** 2026-05-18 02:49 (EEST)
**Category:** Control Systems
**Manufacturer:** Schneider Electric
**Manufacturer code:** LRD3357
**EAN:** 3389110519952
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 214.49 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 177.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--schneider-electric-lrd3357--12445241

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.99 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

The Schneider Electric LRD3357 is a high-quality thermal overload relay designed for motor protection. It features an adjustable current range of 37-50A and a rated insulation voltage of 690V. This reliable component is essential for preventing motor damage due to overloads or phase failures in industrial electrical systems. Its robust design ensures long-term operational stability and safety in various automation and control applications.

## Long description

The Schneider Electric LRD3357 is a professional-grade thermal overload relay engineered to provide reliable protection for electric motors. This device is specifically designed to monitor current levels and disconnect the circuit in the event of an overload or phase failure, thereby preventing costly equipment damage and ensuring the longevity of industrial motor systems. With its robust construction and precise calibration, it serves as a critical safety component in modern electrical control panels.
Advantages
This thermal overload relay offers exceptional operational stability by providing accurate thermal protection within a defined current range. Its design focuses on durability and ease of integration into existing electrical setups, allowing for seamless installation. By effectively managing thermal stress, the unit helps maintain consistent performance in demanding industrial environments, reducing the risk of unexpected downtime and enhancing overall system safety.
Suitable for
Industrial motor control systems
Automation and control panels
Protection against motor overloads
Phase failure detection in electrical circuits
When it may not be suitable
This device is not intended for use in circuits where the motor current falls outside the 37-50A range, as it will not provide the necessary protection. It is also not suitable for applications requiring electronic monitoring or advanced communication features, as this is a traditional thermal-mechanical relay.
Key specifications
Adjustable current range: 37-50A
Rated insulation voltage: 690V
Weight: 510g
Colour: Multicolour
How to use
The relay is typically mounted directly onto a compatible contactor. Once installed, the user must adjust the dial to the specific full-load current rating of the motor being protected. The device should be wired in series with the motor power supply to ensure it can effectively interrupt the circuit when a fault is detected. Regular testing of the trip mechanism is recommended to ensure the relay remains functional.
What to consider before purchase
Verify that the motor's full-load current falls within the 37-50A range
Ensure compatibility with the existing contactor model
Check that the installation environment meets the insulation voltage requirements
Usage recommendations: Always ensure the power supply is disconnected before installing or adjusting the relay. Periodically inspect the terminals for tightness and ensure the device is free from dust or debris to maintain optimal thermal sensitivity.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.51 kg |
| Operating temperature (T-T) | -20 - 60 |
| Product colour | Multicolour |
| Remotely operated | No |
| Number of modules | 1 |
| Coil voltage | 690 V |

## FAQ

### How much does the Schneider Electric LRD3357 Thermal Overload Relay cost, and is it available for purchase?

The price is 214.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 15 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 13.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Schneider Electric LRD3357 Thermal Overload Relay be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Schneider Electric products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Schneider Electric service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### Where can I download the instructions for Schneider Electric LRD3357 Thermal Overload Relay?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/12445241/68779357_large.webp