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

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

The SCHNEIDER Overload Relay: Thermal Protection (MPN LRD03) is a 3-pole IEC thermal overload relay with integrated bimetallic elements, requiring no external thermal units. It features 1NO/1NC auxiliary contacts…

SKU 3G-OTH-39329

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

SCHNEIDER
Manufacturer Part Number
LRD03
Type
1NO/1NC, Phase Loss Sensitivity
Poles
3
Compatible Contactors
TeSys Deca (9 to 38 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 Overload Relay: Thermal Protection (MPN LRD03) is a 3-pole IEC thermal overload relay with integrated bimetallic elements, requiring no external thermal units. It features 1NO/1NC auxiliary contacts, screw clamp terminals, and a maximum voltage rating of 690V AC. Designed for the TeSys Deca contactor series (9 to 38 Amp models), it includes phase loss sensitivity.

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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SCHNEIDER Overload Relay: Thermal Protection, 3 Poles, 1NO/1NC, TeSys Deca (9 to 38 Amp Models) (MPN LR3D14L). Key specifications — Brand: SCHNEIDER; Auxiliary Contact Form: 1NO/1NC; Compatible Contactor Series: TeSys Deca; Terminal Connection Type: Screw Clamp Terminals; Maximum Voltage Rating: 690V AC; Phase Loss Sensitivity: No; Thermal Units Required: None (Relay Includes Integrated Bimetallic Elements); Compatible Contactors: TeSys Deca (9 to 38 Amp Models).
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SCHNEIDER Overload Relay: Thermal Protection, 3 Poles, 1NO/1NC, Phase Loss Sensitivity, 12 A – 18 A (MPN LRD21L). Key specifications — Brand: SCHNEIDER; Auxiliary Contact Form: 1NO/1NC; Compatible Contactor Series: TeSys Deca; Terminal Connection Type: Screw Clamp Terminals; Maximum Voltage Rating: 690V AC; Phase Loss Sensitivity: Yes; Thermal Units Required: None (Relay Includes Integrated Bimetallic Elements); Compatible Contactors: TeSys Deca (18 to 38 Amp Models).
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SCHNEIDER Overload Relay: Thermal Protection, 3 Poles, 1NO/1NC, TeSys Deca (9 to 38 Amp Models) (MPN LR3D08L). Key specifications — Brand: SCHNEIDER; Auxiliary Contact Form: 1NO/1NC; Compatible Contactor Series: TeSys Deca; Terminal Connection Type: Screw Clamp Terminals; Maximum Voltage Rating: 690V AC; Phase Loss Sensitivity: No; Thermal Units Required: None (Relay Includes Integrated Bimetallic Elements); Compatible Contactors: TeSys Deca (9 to 38 Amp Models).