RF383800 Lovato RF38 overload relay 32-38 amp dol 18.5kw star/delta at 30kw

Why Choose the RF383800?

Lovato RF383800 is a thermal overload relay engineered for dependable motor protection in three‑phase applications. It is phase failure and single‑phase sensitive, covering a 32…38 A operational current range across a three‑pole design. You can select manual or automatic reset to match system requirements. Designed for direct mounting on BF09–BF38 contactors, it simplifies installation and helps maintain a compact control panel layout for motor starters in industrial environments.

With a rated insulation voltage of 690 V and 6 kV impulse withstand, the RF383800 offers robust electrical endurance. IP20 frontal protection and pollution degree 3 suit enclosed panels, while operation from -25 to 60 °C and up to 3000 m altitude supports varied sites. Conforming to IEC/EN 60947-1 and 60947-4-1, plus UL508 and CSA C22.2 n° 14, it integrates confidently into global control systems.

Key Benefits

• Phase failure and single‑phase sensitivity protect motors from abnormal conditions.
• 32…38 A operating range matches BF09–BF38 motor starter assemblies.
• Manual or automatic reset options suit diverse control strategies.
• Direct mounting on BF contactors speeds installation and saves panel space.
• Three‑pole design for dependable three‑phase motor protection.
• Ui 690 V and 6 kV Uimp deliver strong insulation coordination.
• IP20 front and pollution degree 3 suit enclosed panel environments.

Technical Specification

• Number of poles: 3
• Pollution degree: 3
• IP degree (frontal): IP20
• Rated insulation voltage Ui (IEC/EN): 690 V
• Rated impulse withstand voltage Uimp: 6 kV
• Terminal tightening torque: 2 to 2.5 Nm
• Ith (IEC): 10 A
• Operating temperature: -25 to 60 °C
• Storage temperature: -50 to 70 °C
• Max altitude: 3000 m
• Weight: 160 g

What’s Included

• Lovato RF383800 thermal overload relay
• Manufacturer documentation for installation and operation
• Protective packaging

Applications

• Three‑phase motor protection within the 32…38 A current range
• Direct integration with Lovato BF09–BF38 contactor panels
• Industrial control panels and motor starters requiring IEC/EN compliance
• Manufacturing and process equipment motor circuits using three‑pole protection

Safety note: Install and commission only by qualified personnel. Set within the specified 32…38 A range, ensure correct coordination with BF contactors, and isolate all power sources before work.