Lovato Electric, RF9 Thermal Overload Relay 1 NO/1 NC, Trip Dial: 0.45 → 0.75 A, 450mA, 750 mA Contact Rating, 370 W,

RS stock no.:: 890-4278
Mfr. Part No.:: 11RF9075
Manufacturer:: Lovato Electric

Lovato Electric, RF9 Thermal Overload Relay 1 NO/1 NC, Trip Dial: 0.45 → 0.75 A, 450mA, 750 mA Contact Rating, 370 W,

Subtotal (1 unit)*

R 1 214,46

(exc. VAT)

R 1 396,63

(inc. VAT)

FREE delivery for orders over R 1,500.00

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2 unit(s) shipping from 10 December 2026

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Units	Per unit
1 +	R 1,214.46

*price indicative

RS stock no.:: 890-4278
Mfr. Part No.:: 11RF9075
Manufacturer:: Lovato Electric

Specification

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Lovato Electric
	Product Type	Thermal Overload Relay
	Relay Contact Current	450mA, 750mA
	Series	RF9
	Pole and Throw Configuration	3P
	Power Rating	370W
	Normal State Configuration	1 NO/1 NC
	Terminal Type	Screw
	Reset Method	Manual
	IP Rating	IP20
	Minimum Operating Temperature	-20°C
	Number of Auxiliary Contacts	2
	Width	44mm
	Adjustable Current Range	0.45 → 0.75 A
	Contact Voltage	690V
	Length	54.5mm
	Maximum Operating Temperature	55°C
	Standards/Approvals	cULus, CCC, CSA, CSA C22.2 No 14, EAC, IEC/EN 60947-1. IEC/EN 60947-4-1, UL508
	Depth	86mm
	Control Voltage	690V ac
	Supply Voltage	690V

	Select all
	Brand Lovato Electric
	Product Type Thermal Overload Relay
	Relay Contact Current 450mA, 750mA
	Series RF9
	Pole and Throw Configuration 3P
	Power Rating 370W
	Normal State Configuration 1 NO/1 NC
	Terminal Type Screw
	Reset Method Manual
	IP Rating IP20
	Minimum Operating Temperature -20°C
	Number of Auxiliary Contacts 2
	Width 44mm
	Adjustable Current Range 0.45 → 0.75 A
	Contact Voltage 690V
	Length 54.5mm
	Maximum Operating Temperature 55°C
	Standards/Approvals cULus, CCC, CSA, CSA C22.2 No 14, EAC, IEC/EN 60947-1. IEC/EN 60947-4-1, UL508
	Depth 86mm
	Control Voltage 690V ac
	Supply Voltage 690V

Not Applicable

COO (Country of Origin):: IT

Lovato RF9 Series Thermal Overload Relay, 450 to 750 mA, 3 Poles - 11RF9075

This thermal overload relay is designed to provide effective motor protection, particularly in three-phase applications. With a contact current rating of 450 to 750 mA and a compact design, it measures 44mm in width, 86mm in depth, and 54.5mm in length. The relay features manual resetting and is compatible for direct mounting on mini-contactors BG06, BG09, and BG12, making it a versatile and reliable choice for various electrical setups.

Features & Benefits

• Offers phase failure detection for enhanced motor safety

• Designed for simple manual reset functionality

• High temperature resistance with a maximum operating temperature of +55 °C

• Supports a control voltage of 690 Vac for robust performance

• Equipped with screw terminals ensuring secure connections

• Features two auxiliary contacts for additional circuit control

Applications

• Used with BG Series mini-contactors for direct mounting

• Ideal for motor needing overload protection

• Suitable for automation in electrical and mechanical systems

• Perfect for environments requiring reliable phase failure detection

What is the importance of the manual reset feature for this relay?

The manual reset feature ensures that after an overload condition, the system cannot automatically restart, avoiding potential damage to the motor and enhancing overall operational safety.

How does the high temperature resistance of this relay benefit its use?

Operating within a range of -20 to +55 °C allows it to function effectively in diverse environments, ensuring longevity and reliability in applications where temperature fluctuations occur.

Can this relay be used in single-phase applications?

While primarily designed for three-phase systems, it is sensitive to single-phase failures, making it versatile for various motor protection scenarios where phase monitoring is required.