Schneider Electric, LRD Thermal Overload Relay 1 NO/1 NC, Trip Dial: 0.25 → 0.4 A, 250mA, 400 mA F.L.C, 400mA Contact

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

Schneider Electric, LRD Thermal Overload Relay 1 NO/1 NC, Trip Dial: 0.25 → 0.4 A, 250mA, 400 mA F.L.C, 400mA Contact

Subtotal (1 unit)*

SGD81.62

(exc. GST)

SGD88.97

(inc. GST)

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Ready to ship from 23 November 2026

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Units	Per unit
1 +	SGD81.62

*price indicative

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

Specifications

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Schneider Electric
	Product Type	Thermal Overload Relay
	FLC Motor Rating	250mA, 400mA
	Relay Contact Current	400mA
	Series	LRD
	Mount Type	Direct
	Pole and Throw Configuration	3
	Power Rating	90W
	Terminal Type	Screw
	Normal State Configuration	1 NO/1 NC
	IP Rating	IP20
	Reset Method	Automatic & Manual
	Width	45mm
	Minimum Operating Temperature	-20°C
	Number of Auxiliary Contacts	2
	Adjustable Current Range	0.25 → 0.4 A
	Length	123mm
	Contact Voltage	690V ac
	Maximum Operating Temperature	60°C
	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
	Supply Voltage	690V ac

	Select all
	Brand Schneider Electric
	Product Type Thermal Overload Relay
	FLC Motor Rating 250mA, 400mA
	Relay Contact Current 400mA
	Series LRD
	Mount Type Direct
	Pole and Throw Configuration 3
	Power Rating 90W
	Terminal Type Screw
	Normal State Configuration 1 NO/1 NC
	IP Rating IP20
	Reset Method Automatic & Manual
	Width 45mm
	Minimum Operating Temperature -20°C
	Number of Auxiliary Contacts 2
	Adjustable Current Range 0.25 → 0.4 A
	Length 123mm
	Contact Voltage 690V ac
	Maximum Operating Temperature 60°C
	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
	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.