RF110110 Lovato RF110 overload relay 90-110 amp dol 55kw

Why Choose the Lovato RF110110 Thermal Overload Relay?

The Lovato RF110110 is a heavy-duty and highly reliable thermal overload relay designed to provide advanced protection for three-phase electric motors in industrial automation and motor control systems. As part of the dependable Lovato RF110 motor protection relay series, it is specifically engineered to protect motors against overload conditions, phase failure and single-phasing faults in demanding industrial environments.

This motor protection relay improves operational safety and equipment reliability by disconnecting the motor during abnormal current conditions. Its direct mounting configuration enables rapid installation onto compatible Lovato BF95 to BF150 contactors, simplifying panel assembly and reducing maintenance time for industrial control engineers and OEM machine builders.

With an adjustable current range of 90–110 A, integrated phase-failure sensitivity and a dependable manual reset mechanism, the RF110110 is ideal for protecting large industrial motors used in conveyors, compressors, pumps, HVAC equipment and production machinery. Its Class 10A tripping performance and industrial-grade construction ensure reliable long-term motor protection in demanding operating conditions.

Key Advantages

• Reliable thermal overload protection for three-phase motors.
• 90–110 A adjustable overload setting for accurate motor protection.
• Integrated phase-failure and single-phase sensitivity.
• Manual reset operation for controlled restart procedures.
• Direct mounting onto Lovato BF95 to BF150 contactors.
• Compact industrial design simplifies installation and maintenance.

Key Features

• Lovato RF110 thermal overload relay series.
• 90–110 A overload adjustment range.
• Three-pole motor protection relay.
• Integrated phase-loss protection.
• Class 10A tripping characteristic.
• 1 NO + 1 NC auxiliary contacts included.
• Manual reset functionality.
• Compatible with BF95 to BF150 contactors.

Technical Specifications

• Manufacturer: Lovato Electric
• Series: RF110 Thermal Overload Relays
• Model: RF110110
• Product type: Thermal overload relay
• Adjustable current range: 90–110 A
• Number of poles: 3-pole
• Tripping class: Class 10A
• Reset type: Manual reset
• Protection type: Phase failure / single-phase sensitive
• Auxiliary contacts: 1 NO + 1 NC
• Mounting type: Direct mounting on contactor
• Compatible contactors: BF95 to BF150
• Protection rating: IP20
• Rated operational voltage: 690 V
• Rated insulation voltage: 690 V
• Rated impulse withstand voltage: 8 kV
• Operating frequency: 0–400 Hz
• Terminal type: Screw / yoke clamp terminals
• Operating temperature: -20 °C to +55 °C
• Storage temperature: -55 °C to +80 °C
• Maximum altitude: 3000 m
• Weight: approx. 395 g
• Compliance: IEC/EN 60947-1, IEC/EN 60947-4-1, UL508, CSA C22.2 No.14

Reliable Motor Protection for Industrial Applications

Thermal overload relays such as the Lovato RF110110 continuously monitor motor current and disconnect the supply during overload or phase-loss conditions. This helps prevent motor overheating, winding damage and costly production downtime while improving equipment lifespan and operational safety.

The RF110 series is specifically developed for industrial motor starters requiring dependable overload protection for higher current applications. Its integrated phase-failure sensitivity rapidly detects abnormal operating conditions caused by voltage imbalance or single-phasing faults, helping ensure enhanced protection for motors and connected machinery.

Typical Applications

• Industrial conveyors and material handling systems.
• Pumps, compressors and HVAC equipment.
• Packaging and production machinery.
• Machine tools and automation systems.
• OEM control panels and motor starter assemblies.
• Heavy-duty industrial motor protection applications.

Trusted by Industrial Automation Engineers

Lovato RF110 thermal overload relays are widely trusted by panel builders and automation engineers for dependable motor protection, flexible installation and reliable long-term operation in industrial control systems.