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11RFNA975 - T/O RELAY RFNA9 4.5-7.5A

11RFNA975 – T/O RELAY RFNA9 4.5-7.5A

Lovato 11RFNA975 is a three-pole Class 10A thermal motor protection relay with a 4.5–7.5 A adjustable operational current range, automatic resetting, phase failure detection and direct mounting on BG06, BG09 and BG12 mini-contactors.

SKU: 11RFNA975Alt SKU: RFNA975MPN: 11RFNA975
Price
List Price £74.48 ex VAT
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£74.48
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Why Choose the Lovato 11RFNA975 Thermal Overload Relay?

The Lovato 11RFNA975 is a three-pole thermal motor protection relay designed for direct mounting on Lovato BG06, BG09 and BG12 mini-contactors. With an adjustable operational current range of 4.5–7.5 A, it provides thermal overload protection for compatible three-phase motor control applications.

Part of the Lovato 11RFNA9 motor protection relay series, the 11RFNA975 features automatic resetting, phase failure detection, a test button and trip indication. Its compact direct-mounting format enables integration with compatible BG mini-contactors in industrial motor starters and control panels.

The relay has a 690 V rated operational voltage, 690 V rated insulation voltage and 8 kV rated impulse withstand voltage. Its Class 10A tripping characteristic and IP20 frontal protection make it a practical motor protection component for industrial machinery and automation systems.

Key Advantages

  • Adjustable 4.5–7.5 A operational current range for motor overload protection.
  • Direct mounting on Lovato BG06, BG09 and BG12 mini-contactors.
  • Three-pole thermal motor protection relay for three-phase applications.
  • Automatic reset functionality.
  • Integrated phase failure detection.
  • Includes a test button and trip indicator.
  • Class 10A tripping characteristic.
  • IP20 frontal protection for installation within suitable electrical enclosures.

Key Features

  • Lovato 11RFNA9 thermal motor protection relay.
  • 4.5–7.5 A adjustable operational current.
  • Three-pole configuration.
  • Thermal release.
  • Automatic reset mode.
  • Phase failure detection.
  • Class 10A tripping class.
  • 690 V rated operational voltage.
  • 690 V rated insulation voltage.
  • 8 kV rated impulse withstand voltage.
  • Operational frequency range of 0–400 Hz.
  • M4 screw and washer terminals.
  • Operating temperature range of -20 to +55 °C.
  • Suitable for operation at altitudes up to 3000 m.

Thermal Overload Protection for Three-Phase Motors

Thermal overload relays protect motors by responding to sustained overcurrent conditions that can cause excessive heating. An adjustable current setting allows the protection threshold to be configured according to the operating current of the connected motor.

The Lovato 11RFNA975 combines a 4.5–7.5 A adjustable current range with Class 10A tripping, automatic resetting and phase failure detection. Direct mounting on compatible BG06, BG09 and BG12 mini-contactors enables compact motor starter assemblies for industrial machinery and electrical control panels.

Typical Applications

  • Three-phase motor thermal overload protection.
  • Motor starters using Lovato BG06, BG09 or BG12 mini-contactors.
  • Industrial machinery control panels.
  • Compact motor control assemblies.
  • OEM automation and machine-building equipment.
  • Industrial motor switching and protection systems.

Technical Specifications

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Terminal Type Screw
Monitoring Function Temperature / thermistor
Monitored Supply Single-phase
Reset Type Automatic
Load Voltage 690 V
Manufacturer Lovato Electric
Series 11RFNA9
Model 11RFNA975
Product type Thermal motor protection relay
Number of poles 3
Release type Thermal
Operational current range 4.5–7.5 A
Tripping class 10A
Reset mode Automatic
Phase failure detection Yes
Test button Yes
Trip indicator Yes
Rated operational voltage 690 V
Rated insulation voltage (Ui) 690 V
Rated impulse withstand voltage (Uimp) 8 kV
Operational frequency 0–400 Hz
Frontal protection rating IP20
Overvoltage category III
Pollution degree 3
Terminal type Screw and washer
Terminal screw M4
Terminal tightening torque 2.3 Nm
Operating temperature -20 to +55 °C
Storage temperature -55 to +70 °C
Temperature compensation range -15 to +55 °C
Maximum altitude 3000 m
Mounting Direct mounting on BG06, BG09 and BG12 mini-contactors
UL three-phase motor full-load current at 480 V 7.5 A
UL three-phase motor full-load current at 600 V 7.5 A
Weight 114 g
Package dimensions 65 × 46 × 90 mm
Package volume 269.1 cm³
Quantity per package 1
EAN13 8013975020722
HS code 85364900

Frequently Asked Questions

What current range does the Lovato 11RFNA975 cover?

The Lovato 11RFNA975 has an adjustable operational current range of 4.5–7.5 A.

Which contactors are compatible with the Lovato 11RFNA975?

The 11RFNA975 is designed for direct mounting on Lovato BG06, BG09 and BG12 mini-contactors.

Does the Lovato 11RFNA975 reset automatically?

Yes. The 11RFNA975 uses an automatic reset mode.

Does the Lovato 11RFNA975 provide phase failure detection?

Yes. Lovato specifies phase failure detection for the 11RFNA975.

What tripping class does the Lovato 11RFNA975 use?

The Lovato 11RFNA975 is a Class 10A thermal motor protection relay.

Reliable Lovato Motor Protection

Lovato 11RFNA9 thermal motor protection relays provide compact overload protection for compatible BG mini-contactor assemblies, combining adjustable thermal protection with automatic resetting, phase failure detection and direct mounting.

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