RF382300 Lovato RF38 overload relay 17-23 amp dol 11 kw star delta 18.5 kw

Why Choose the Lovato RF382300 Thermal Overload Relay?

The Lovato RF382300 is a compact 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 RF38 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 overload relay improves operational reliability and motor safety by disconnecting the motor during abnormal current conditions. Its direct mounting design allows seamless installation onto compatible Lovato BF09 to BF38 contactors, simplifying panel assembly and reducing installation time for OEM machine builders and industrial electricians.

With an adjustable current range of 17–23 A, integrated phase-failure sensitivity and both manual and automatic reset functionality, the RF382300 is ideal for protecting industrial motors used in pumps, conveyors, compressors, fans and automation machinery. Its compact construction and Class 10A tripping characteristic ensure dependable motor protection and reliable long-term operation in demanding industrial environments.

Key Advantages

• Reliable thermal overload protection for three-phase motors.
• 17–23 A adjustable overload setting for accurate motor protection.
• Integrated phase-failure and single-phase sensitivity.
• Manual or automatic reset operation for flexible system integration.
• Direct mounting onto Lovato BF series contactors.
• Compact industrial design simplifies installation and maintenance.

Key Features

• Lovato RF38 thermal overload relay series.
• 17–23 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 and automatic reset modes.
• Compatible with BF09 to BF38 contactors.

Technical Specifications

• Manufacturer: Lovato Electric
• Series: RF38 Thermal Overload Relays
• Model: RF382300
• Product type: Thermal overload relay
• Adjustable current range: 17–23 A
• Number of poles: 3-pole
• Tripping class: Class 10A
• Reset type: Manual or automatic reset
• Protection type: Phase failure / single-phase sensitive
• Auxiliary contacts: 1 NO + 1 NC
• Mounting type: Direct mounting on contactor
• Compatible contactors: BF09 to BF38
• Protection rating: IP20
• Rated operational voltage: 690 V
• Rated impulse withstand voltage: 6 kV
• Operating frequency: 0–400 Hz
• Terminal type: Screw and washer terminals
• Operating temperature: -25 °C to +60 °C
• Weight: approx. 162 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 RF382300 continuously monitor motor current and disconnect the supply during overload or phase-loss conditions. This helps prevent motor overheating, winding damage and costly downtime while improving equipment lifespan and operational safety.

The RF38 series is designed for industrial motor control systems requiring dependable and compact protection solutions. 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 ventilation equipment.
• Packaging and production machinery.
• Machine tools and automation systems.
• OEM control panels and motor starter assemblies.
• General industrial motor protection applications.

Trusted by Industrial Automation Engineers

Lovato RF38 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.