RFE450800 Lovato RFE overload relay 1.6-8 amp dol 0.75-3kw star/delta at 2.2-4kw

Why Choose the RFE450800?

The Lovato RFE450800 electronic thermal overload relay delivers dependable three-phase motor protection with an adjustable 1.6...8 A range. Phase failure and single‑phase sensitivity help safeguard equipment, while manual or automatic reset offers flexibility in control strategies. Designed for direct mounting on BF09…BF38 contactors, this three‑pole device integrates neatly into motor starters and complies with IEC/EN 60947-1 and 60947-4-1 for industrial reliability.

Rated Ui 1000 V and Uimp 6 kV, the RFE450800 withstands electrical transients, with IP20 frontal protection for safer handling. It operates from -25 to 70 °C, up to 3000 m altitude, and features Ith 10 A. Robust terminals accept 3.1 to 3.1 Nm tightening torque, ensuring secure connections. Lightweight at 195 g, this compact relay supports efficient panel building without compromising protection performance.

Key Benefits

• Adjustable 1.6...8 A setting for precise overload protection.
• Phase failure and single‑phase sensitivity improves motor safety.
• Manual or automatic reset adapts to control requirements.
• Direct mounting on BF09…BF38 contactors saves space and time.
• Three‑pole design suited to three‑phase motor circuits.
• Rated Ui 1000 V and Uimp 6 kV for high dielectric strength.
• IP20 frontal protection supports safer operation in panels.

Technical Specification

• Number of poles: 3
• Pollution degree: 3
• IP degree (frontal): IP20
• Rated insulation voltage Ui (IEC/EN): 1000 V
• Rated impulse withstand voltage Uimp: 6 kV
• Terminal tightening torque: 3.1 to 3.1 Nm
• Ith (IEC): 10 A
• Operating temperature: -25 to 70 °C
• Storage temperature: -55 to 80 °C
• Max altitude: 3000 m
• Weight: 195 g

What’s Included

• Lovato RFE450800 electronic thermal overload relay
• User instructions
• Protective packaging

Applications

• Three‑phase motor protection with Lovato BF09…BF38 contactors
• Control panels requiring manual/automatic reset overload protection
• Installations needing phase failure/single‑phase sensitive protection
• Industrial environments up to 3000 m and -25 to 70 °C
• Equipment built to IEC/EN 60947 motor control standards

Safety note: Installation and settings should be performed by qualified personnel. Always isolate power before work and set the relay according to motor nameplate data, following IEC/EN 60947 guidance and manufacturer instructions.