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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 LRD04) 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-39973

Also listed as: LRD 04 · LRD-04

Brand
SCHNEIDER
Item
Overload Relay: Thermal Protection, 3 Poles, 1NO/1NC
Category
IEC Thermal Overload Relays
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

SCHNEIDER
Manufacturer Part Number
LRD04
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

Technical Documents

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

Product Description

The SCHNEIDER Overload Relay: Thermal Protection (MPN LRD04) 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 use with TeSys Deca contactors (9 to 38 Amp models), it includes phase loss sensitivity.

Frequently Asked Questions

What is the SCHNEIDER LRD04 overload relay used for?

The SCHNEIDER LRD04 is a 3-pole IEC thermal overload relay designed to protect motors from overheating and phase loss. It integrates bimetallic elements and is used with TeSys Deca contactors (9 to 38 Amp models) in industrial motor control applications.

What are the specifications of the SCHNEIDER LRD04 overload relay?

The SCHNEIDER LRD04 features 1NO/1NC auxiliary contacts, screw clamp terminals, a maximum voltage rating of 690V AC, and phase loss sensitivity. It requires no external thermal units as it includes integrated bimetallic elements. It is compatible with TeSys Deca contactors.

Where to buy the SCHNEIDER LRD04 overload relay worldwide?

You can source the SCHNEIDER LRD04 overload relay through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring reliable supply for your motor protection needs.

How to select the correct SCHNEIDER overload relay for a motor?

To select the correct SCHNEIDER overload relay, match the relay's current range to the motor's full-load current. The LRD04 is designed for TeSys Deca contactors (9 to 38 Amp models) and includes phase loss sensitivity. Always verify compatibility with your contactor series and voltage rating.

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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