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SCHNEIDER Overload Relay: Thermal Protection, 3 Poles, 1NO/1NC, Phase Loss Sensitivity - IEC Thermal Overload Relays
SCHNEIDERIEC Thermal Overload Relays

SCHNEIDER Overload Relay: Thermal Protection, 3 Poles, 1NO/1NC, Phase Loss Sensitivity

The SCHNEIDER LRD350 is an IEC thermal overload relay with integrated bimetallic elements, designed for use with TeSys Deca contactors (40 to 65 Amp models). It features a 1NO/1NC auxiliary contact configuration…

SKU 3G-OTH-42098

Brand
SCHNEIDER
Item
Overload Relay: Thermal Protection, 3 Poles, 1NO/1NC, Phase Loss Sensitivity
Category
IEC Thermal Overload Relays
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Technical Specifications

SCHNEIDER
Manufacturer Part Number
LRD350
Type
1NO/1NC, Phase Loss Sensitivity, 37 A – 50 A
Poles
3
Compatible Contactors
TeSys Deca (40 to 65 Amp Models)
Auxiliary Contact Form
1NO/1NC
Maximum Voltage Rating
690V AC
Phase Loss Sensitivity
Yes
Thermal Units Required
None (Relay Includes Integrated Bimetallic Elements)
Terminal Connection Type
Screw Clamp Terminals
Compatible Contactor Series
TeSys Deca
View Full Spec Sheet

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SCHNEIDER Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SCHNEIDER LRD350 is an IEC thermal overload relay with integrated bimetallic elements, designed for use with TeSys Deca contactors (40 to 65 Amp models). It features a 1NO/1NC auxiliary contact configuration, phase loss sensitivity, and a maximum voltage rating of 690V AC. The relay uses screw clamp terminals and requires no external thermal units.

Frequently Asked Questions

What is the SCHNEIDER LRD350 overload relay used for?

The SCHNEIDER LRD350 is an IEC thermal overload relay that protects motors from overheating due to overcurrent or phase loss. It is used with TeSys Deca contactors (40 to 65 Amp models) in industrial motor control applications, such as pumps, fans, and conveyors.

What are the specifications of the SCHNEIDER LRD350?

The SCHNEIDER LRD350 has a current range of 37 A to 50 A, a maximum voltage rating of 690V AC, and a 1NO/1NC auxiliary contact configuration. It includes integrated bimetallic elements for thermal protection, features phase loss sensitivity, and uses screw clamp terminals. It is compatible with TeSys Deca contactors.

Where to buy the SCHNEIDER LRD350 worldwide?

You can source the SCHNEIDER LRD350 from 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., 37 A to 50 A for the LRD350) to the motor's full-load current. Ensure compatibility with your contactor series (TeSys Deca for this model) and verify voltage rating (690V AC). The LRD350 includes integrated bimetallic elements and phase loss sensitivity for comprehensive protection.

Used in

Common applications for SCHNEIDER
Motor starting in conveyor systems — Schneider Altistart ATS 22 soft starters (e.g., ATS22D17S6U) reduce inrush current.
Speed control for industrial pumps — Schneider Altivar ATV320 VFDs (e.g., ATV320U55N4W) provide variable flow regulation.
Machine safety interlocking — Schneider XPSUAF13AP safety relays monitor emergency stop circuits on assembly lines.
Panel-mounted control stations — Schneider XB5 flush push buttons (ZB5AA5) serve as start/stop operators in MCCs.
Heavy-duty motor switching — Schneider LC1G150LSEA contactors handle 150 A loads in compressor and crusher applications.
Emergency stop actuation — Schneider 9001K mushroom-head push buttons (9001KR25R) provide red, momentary stop functions.

SCHNEIDER Products

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.

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