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RF933 Lovato RF9 overload relay for bg contactors 2-3.3 amp 1.1 kw

RF933 Lovato RF9 overload relay for bg contactors 2-3.3 amp 1.1 kw

LOVATO Electric 11RF933 RF9 thermal motor protection relay with 2–3.3 A adjustable current range, phase failure detection and manual reset for industrial motor starters.

SKU: 11RF933Alt SKU: RF933MPN: 11RF933
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List Price £60.43 ex VAT
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Why Choose the LOVATO Electric 11RF933 Motor Protection Relay?

The LOVATO Electric 11RF933 is a reliable thermal motor protection relay designed to protect three-phase motors against overload conditions and phase failure. Part of the LOVATO Electric RF9 motor protection relay series, it provides dependable protection for industrial motor starters, automation systems and electrical control panels.

This three-pole thermal overload relay features manual reset operation, phase failure sensitivity and direct mounting capability on compatible LOVATO Electric BG06, BG09 and BG12 mini-contactors. Its compact design makes it suitable for space-efficient motor starter assemblies while maintaining reliable protection performance.

With an adjustable operating current range of 2–3.3 A, the LOVATO Electric 11RF933 is ideal for protecting small three-phase motors used in industrial machinery, pumps, fans and automation equipment.

Key Advantages

  • Compact thermal overload relay for industrial motor protection.
  • 2–3.3 A adjustable current range for accurate motor protection.
  • Phase failure and single-phase sensitivity helps protect motors from phase loss conditions.
  • Manual reset function for controlled fault recovery.
  • Direct mounting on LOVATO BG06, BG09 and BG12 mini-contactors.
  • Suitable for industrial automation and motor starter applications.

Key Features

  • LOVATO Electric RF9 motor protection relay series.
  • Three-pole thermal overload protection.
  • 2–3.3 A adjustable operational current range.
  • 10A tripping class.
  • Manual reset operation.
  • Phase failure detection.
  • 1 normally open and 1 normally closed auxiliary contact.
  • Direct mounting on BG06, BG09 and BG12 mini-contactors.

Reliable Motor Protection for Industrial Systems

Thermal overload relays such as the LOVATO Electric 11RF933 monitor motor current and disconnect control circuits when overload conditions occur. This helps prevent motor damage and improves the reliability of industrial electrical installations.

The RF9 series provides compact protection solutions for motor starters, combining overload protection, phase failure detection and direct contactor mounting for efficient industrial control panel design.

Typical Applications

  • Industrial motor starter assemblies.
  • Small three-phase motor protection systems.
  • Automation control panels.
  • Pumps and fan systems.
  • OEM machinery and production equipment.
  • Industrial electrical installations.

Technical Specifications

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Mounting Type Direct mount on contactor
Device Type Thermal Overload Relay
Current Range 2–3.3 A
Compatible With BG06, BG09
Trip Class Class 10A
Reset Type Manual
Manufacturer LOVATO Electric
Series RF9
Model 11RF933
Product type Thermal motor protection relay
Number of poles 3
Operational current range 2–3.3 A
Tripping class 10A
Reset mode Manual
Phase failure detection Yes
Auxiliary contacts 1 NO + 1 NC
Rated insulation voltage 690 V
Rated operational voltage 690 V
Rated impulse withstand voltage 8 kV
Protection rating IP20
Mounting type Direct mounting on BG06, BG09 and BG12 mini-contactors
Terminal type Screw and washer
Operating temperature -20 to +55 °C
Weight approx. 115 g
Poles 3-pole

Frequently Asked Questions

What is the LOVATO Electric 11RF933 used for?

The 11RF933 is a thermal motor protection relay used to protect three-phase motors against overload and phase failure conditions.

What current range does the 11RF933 support?

The relay supports an adjustable operational current range of 2–3.3 A.

Does the 11RF933 detect phase failure?

Yes, the relay includes phase failure and single-phase sensitivity to help protect motors from phase loss conditions.

How is the 11RF933 reset after a trip?

The relay uses a manual reset function for controlled recovery after an overload event.

Which contactors is the 11RF933 compatible with?

The relay is designed for direct mounting on LOVATO Electric BG06, BG09 and BG12 mini-contactors.

Trusted by Industrial Automation Professionals

LOVATO Electric RF9 motor protection relays provide reliable overload protection and motor control solutions for industrial automation systems and electrical installations.

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