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

Why Choose the RF382300?

Lovato RF382300 is a three‑pole thermal overload relay engineered for dependable motor protection. Covering 17–23 A and phase failure/single‑phase sensitive, it safeguards three‑phase motors from overload and loss of phase. With manual or automatic resetting and direct mounting to BF09–BF38 contactors, the RF382300 streamlines assembly while maintaining precise protection. This compact unit integrates seamlessly into BF series motor starter configurations.

Built for demanding environments, the RF382300 offers Ui 690 V, Uimp 6 kV and IP20 frontal protection with pollution degree 3. It operates reliably from -25 to 60 °C up to 3000 m altitude, in a compact 160 g form. Conformity includes IEC/EN 60947‑1 and 60947‑4‑1, UL508 and CSA C22.2 n° 14. A Sustainability certification is noted by the manufacturer.

Key Benefits

• Direct mounting on BF09–BF38 contactors speeds installation
• 17–23 A range suits common three‑phase motor currents
• Manual or automatic reset for flexible maintenance
• Phase failure/single‑phase sensitivity enhances protection
• Ui 690 V and Uimp 6 kV robust insulation performance
• IP20 frontal rating provides basic ingress protection
• Reliable operation from -25 to 60 °C up to 3000 m
• Three‑pole design tailored to three‑phase applications

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 RF382300 thermal overload relay
• Installation and operation instructions
• Manufacturer product datasheet

Applications

• Three‑phase motor protection within the 17–23 A setting range
• Motor starters built with Lovato BF09–BF38 contactors
• Control panels requiring phase failure/single‑phase sensitive protection
• Systems needing selectable manual or automatic reset behaviour

Safety note: Installation, adjustment and maintenance must be performed by qualified personnel. Always isolate power and verify coordination with associated contactors and protective devices before work.