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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 LR3D12L) is a 3-pole IEC thermal overload relay with integrated bimetallic elements, eliminating the need for separate thermal units. It features a 1NO/1NC…

SKU 3G-OTH-39886

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
LR3D12L
Type
1NO/1NC, TeSys Deca (9 to 38 Amp Models)
Poles
3
Compatible Contactors
TeSys Deca (9 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 Overload Relay: Thermal Protection (MPN LR3D12L) is a 3-pole IEC thermal overload relay with integrated bimetallic elements, eliminating the need for separate thermal units. It features a 1NO/1NC auxiliary contact form, screw clamp terminals, and a maximum voltage rating of 690V AC. This relay is compatible with TeSys Deca contactors (9 to 38 Amp models) and does not include phase loss sensitivity.

Frequently Asked Questions

What is the SCHNEIDER LR3D12L overload relay used for?

The SCHNEIDER LR3D12L is a 3-pole IEC thermal overload relay that protects motors from overheating by monitoring current. It is used in industrial applications with TeSys Deca contactors (9 to 38 Amp models) to prevent damage from sustained overloads.

What are the specifications of the SCHNEIDER LR3D12L overload relay?

The SCHNEIDER LR3D12L has 3 poles, a 1NO/1NC auxiliary contact form, screw clamp terminals, and a maximum voltage rating of 690V AC. It includes integrated bimetallic elements, so no separate thermal units are needed. It is compatible with TeSys Deca contactors (9 to 38 Amp models) and does not offer phase loss sensitivity.

Where to buy the SCHNEIDER LR3D12L overload relay worldwide?

You can source the SCHNEIDER LR3D12L overload relay through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring the relay reaches your facility reliably.

How to install the SCHNEIDER LR3D12L overload relay?

Mount the SCHNEIDER LR3D12L directly onto a compatible TeSys Deca contactor (9 to 38 Amp models). Connect the motor circuit through the relay's screw clamp terminals, and wire the 1NO/1NC auxiliary contacts for control. Always follow local electrical codes and the manufacturer's manual for safe installation.

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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