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Schneider Electric, TeSys LRD Thermal Overload Relay 1 NO/1 NC, 0.25A, 0.4 A F.L.C, 400mA Contact Rating, 0.09 kW 3

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SGD56.90

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SGD62.02

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RS Stock No.:
394-9447
Mfr. Part No.:
LRD03
Manufacturer:
Schneider Electric
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Brand

Schneider Electric

FLC Motor Rating

0.25, 0.4A

Product Type

Thermal Overload Relay

Relay Contact Current

400mA

Series

TeSys LRD

Mount Type

Direct

Pole and Throw Configuration

3

Power Rating

0.09kW

Terminal Type

Screw Clamp

Normal State Configuration

1 NO/1 NC

Reset Method

Automatic & Manual

IP Rating

IP20

Adjustable Current Range

0.25 to 0.4 A

Width

45mm

Minimum Operating Temperature

-20°C

Number of Auxiliary Contacts

2

Maximum Operating Temperature

60°C

Length

123mm

Contact Voltage

690V ac

Standards/Approvals

CSA C22.2 No 60947-4-1, CSA C22.2 No 60947-5-1, EN 50495, EN/IEC 60947-4-1, EN/IEC 60947-5-1, GB/T 14048.4, GB/T 14048.5, UL 60947-4-1, UL 60947-5-1

Depth

66mm

Better World Product

Yes

Supply Voltage

690V ac

Schneider Electric LRD Series Thermal Overload Relay, 0.25 to 0.4 A FLC Motor Rating, 3 Pole Configuration - LRD03


This thermal overload relay provides reliable motor protection, ideal for automation and electrical applications. Designed as a 3P thermal overload relay, it operates within a current rating range of 0.25 to 0.4A and features dimensions of 123mm x 66mm x 45mm. The device ensures robust electrical overload protection with an operating temperature range of -20 to +60 °C.

Features & Benefits


• Automatic reset method enhances operational efficiency

• Screw terminal design simplifies installation and maintenance

• Integrated with 1NO + 1NC auxiliary contacts for versatility

• Suitable for direct contactor mounting, maximising space utilisation

• Rated for 690V AC operation, ensuring broad compatibility

• Trip threshold of 130% of rated current protects against overloads

Applications


• Utilised in motor control circuits for efficient protection

• Compatible with various LC1D series contactors for versatility

• Employed in AC and DC network environments

• Ideal for industrial machinery requiring thermal overload protection

What is the maximum current rating supported for signalling circuits?


The permissible current for signalling circuits reaches up to 3A at 120V AC-15, ensuring reliable operation for signalling requirements.

How is the reset process configured for this relay?


The device allows both automatic and manual reset methods, providing flexibility depending on operational needs and safety protocols.

What kind of mounting support is available for this relay?


It can be mounted on a plate, rail, or underneath a contactor using specific accessories, which makes it adaptable for different installation scenarios.

What is the significance of having a trip threshold of 1.14 +/- 0.06 Ir?


This designated trip threshold provides accurate and reliable tripping behaviour, ensuring effective protection against potential overload conditions for connected motors.

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