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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 IEC Overload Relay: Thermal Protection (MPN LR3D22) is a three-pole thermal overload relay with integrated bimetallic elements, requiring no external thermal units. It features a 1NO/1NC auxiliary…

SKU 3G-OTH-40649

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
LR3D22
Type
1NO/1NC, TeSys Deca (25 to 38 Amp Models)
Poles
3
Compatible Contactors
TeSys Deca (25 to 38 Amp Models)
Auxiliary Contact Form
1NO/1NC
Maximum Voltage Rating
690V AC
Phase Loss Sensitivity
No
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 IEC Overload Relay: Thermal Protection (MPN LR3D22) is a three-pole thermal overload relay with integrated bimetallic elements, requiring no external thermal units. It features a 1NO/1NC auxiliary contact configuration, screw clamp terminals, and a maximum voltage rating of 690V AC. This relay is designed for use with TeSys Deca contactors in the 25 to 38 Amp models and does not include phase loss sensitivity.

Frequently Asked Questions

What is the SCHNEIDER LR3D22 overload relay used for?

The SCHNEIDER LR3D22 is a three-pole thermal overload relay used to protect motors from overcurrent and phase imbalance. It integrates bimetallic elements for thermal protection and is designed for use with TeSys Deca contactors in 25 to 38 Amp models, commonly applied in industrial motor control panels.

What are the specifications of the SCHNEIDER LR3D22 overload relay?

The SCHNEIDER LR3D22 is a three-pole thermal overload relay with a 1NO/1NC auxiliary contact form, screw clamp terminals, and a maximum voltage rating of 690V AC. It includes integrated bimetallic elements, requires no external thermal units, and is compatible with TeSys Deca contactors for 25 to 38 Amp models.

Where to buy the SCHNEIDER LR3D22 overload relay worldwide?

You can source the SCHNEIDER LR3D22 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 industrial applications.

How to select the correct SCHNEIDER overload relay for a TeSys Deca contactor?

To select the correct SCHNEIDER overload relay, match the relay's amp range to your motor's full-load current. The LR3D22 is designed for TeSys Deca contactors in the 25 to 38 Amp range. Ensure the relay's voltage rating (690V AC) and auxiliary contact configuration (1NO/1NC) meet your control circuit requirements.

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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