Lovato 11RFA905 is a three-pole thermal motor protection relay with a 0.3–0.5 A adjustable current range, automatic reset and phase failure sensitivity for direct mounting on BG06, BG09 and BG12 mini-contactors.
SKU:11RFA905Alt SKU:RFA905MPN:11RFA905
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List Price£73.99ex VAT
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£73.99
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Why Choose the Lovato 11RFA905 Thermal Overload Relay?
The Lovato 11RFA905 is a compact and reliable thermal motor protection relay designed to protect three-phase motors against overload and phase failure conditions. As part of the Lovato 11RFA9 motor protection relay series, it combines thermal overload protection with phase failure sensitivity and automatic resetting for dependable motor protection in industrial control applications.
Designed for direct mounting on Lovato BG06, BG09 and BG12 mini-contactors, the 11RFA905 enables a compact motor starter assembly without requiring separate relay mounting. Its Class 10A tripping characteristic, integrated test button and trip indicator provide practical motor protection and straightforward fault identification.
With an adjustable operational current range of 0.3–0.5 A and a rated operational voltage of up to 690 V, the 11RFA905 is suitable for protecting small three-phase motors. Its IP20 frontal protection and robust industrial design support reliable operation in machinery, automation equipment and electrical control panels.
Key Advantages
Reliable thermal overload protection for three-phase motors.
0.3–0.5 A adjustable operational current range for small motor applications.
Integrated phase failure sensitivity for enhanced motor protection.
Automatic reset supports convenient system operation.
Direct mounting on Lovato BG06, BG09 and BG12 mini-contactors.
Integrated test button and trip indicator simplify testing and fault identification.
Key Features
Lovato 11RFA9 motor protection relay series.
0.3–0.5 A operational current range.
Three-pole thermal motor protection relay.
Phase failure and single-phase sensitive operation.
Automatic reset mode.
Class 10A tripping characteristic.
Integrated test button and trip indicator.
Direct mounting on BG06, BG09 and BG12 mini-contactors.
Reliable Motor Protection for Industrial Machinery
Thermal overload relays such as the Lovato 11RFA905 protect electric motors by responding to sustained overcurrent conditions that can cause excessive heating and equipment damage. Phase failure sensitivity provides additional protection when abnormal phase conditions occur in a three-phase motor circuit.
The 11RFA905 is designed to integrate directly with compatible Lovato BG mini-contactors, creating a compact motor starter assembly. Its automatic reset function, Class 10A tripping characteristic, test button and trip indicator make it well suited to industrial machinery, automation equipment and control-panel applications requiring dependable motor protection.
Typical Applications
Small three-phase motor protection.
Industrial machinery and automation equipment.
Compact motor starter assemblies.
Pumps, fans and conveyor systems.
Electrical control panels.
OEM machinery using Lovato BG mini-contactors.
Technical Specifications
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Terminal Type
Screw
Monitored Supply
Single-phase
Reset Type
Automatic
Load Voltage
690 V
Monitoring Function
Temperature / thermistor
Manufacturer
Lovato Electric
Series
11RFA9
Model
11RFA905
Product type
Thermal motor protection relay
Number of poles
3
Operational current
0.3–0.5 A
Rated operational voltage
690 V
Rated insulation voltage Ui
690 V
Rated impulse withstand voltage Uimp
8 kV
Operational frequency
0–400 Hz
Tripping class
10A
Reset mode
Automatic
Phase failure detection
Yes
Protection rating
IP20 frontal
Terminal type
Screw and washer
Terminal screw
M4
Operating temperature
-20 to 55 °C
Storage temperature
-55 to 70 °C
Maximum altitude
3000 m
Normal operating position
Vertical plane
Permitted mounting position
±30°
Mounting type
Direct mounting on BG06, BG09 and BG12 mini-contactors
Weight
116 g
IP Rating
IP20
Frequently Asked Questions
What is the Lovato 11RFA905 used for?
The Lovato 11RFA905 is a thermal motor protection relay designed to protect three-phase motors against overload and phase failure conditions.
What current range does the Lovato 11RFA905 support?
The relay has an adjustable operational current range of 0.3–0.5 A.
Does the Lovato 11RFA905 reset automatically?
Yes. The 11RFA905 features an automatic reset mode.
Which contactors can the Lovato 11RFA905 be mounted on?
The relay is designed for direct mounting on Lovato BG06, BG09 and BG12 mini-contactors.
Does the Lovato 11RFA905 provide phase failure protection?
Yes. The 11RFA905 features phase failure detection and is designed to provide additional protection for three-phase motors.
Trusted Motor Protection from Lovato Electric
Lovato Electric 11RFA9 thermal motor protection relays provide compact overload and phase failure protection for compatible BG mini-contactor motor starter assemblies in industrial control applications.
Terminal Type
Screw
Monitored Supply
Single-phase
Reset Type
Automatic
Load Voltage
690 V
Monitoring Function
Temperature / thermistor
Manufacturer
Lovato Electric
Series
11RFA9
Model
11RFA905
Product type
Thermal motor protection relay
Number of poles
3
Operational current
0.3–0.5 A
Rated operational voltage
690 V
Rated insulation voltage Ui
690 V
Rated impulse withstand voltage Uimp
8 kV
Operational frequency
0–400 Hz
Tripping class
10A
Reset mode
Automatic
Phase failure detection
Yes
Protection rating
IP20 frontal
Terminal type
Screw and washer
Terminal screw
M4
Operating temperature
-20 to 55 °C
Storage temperature
-55 to 70 °C
Maximum altitude
3000 m
Normal operating position
Vertical plane
Permitted mounting position
±30°
Mounting type
Direct mounting on BG06, BG09 and BG12 mini-contactors
Weight
116 g
IP Rating
IP20
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