RF829500 - OVERLOAD RELAY 70-95A BF40-BF80

Why Choose the RF829500?

The Lovato RF829500 thermal overload relay provides dependable motor protection for three-phase systems. Phase failure and single-phase sensitive, it safeguards motors in the 70…95 A range and features manual resetting for controlled restarts. Designed for direct mounting on BF40 to BF94 contactors, this three-pole unit streamlines assembly while maintaining reliable performance in demanding industrial environments.

Built for robust service, the relay offers Ui 690 V and 8 kV impulse withstand, with IP20 frontal protection and pollution degree 3. It operates from −20 to +55 °C and is suitable up to 3000 m altitude. Conformity to IEC/EN 60947-1 and 60947-4-1, plus UL508 and CSA C22.2 No. 14, supports integration in compliant control panels.

Key Benefits

• Phase failure and single-phase sensitive protection for dependable motor safety.
• Manual reset enables controlled restarts and clear fault acknowledgement.
• Direct mounting on BF40–BF94 contactors speeds assembly and saves space.
• Supports operational currents in the 70…95 A range.
• Three-pole design suited to three-phase motor circuits.
• Robust insulation ratings: Ui 690 V and Uimp 8 kV.
• IP20 frontal protection with pollution degree 3 for panels.
• Operates from −20 to +55 °C; suitable up to 3000 m.

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: 8 kV
• Terminal tightening torque: 3.9 to 3.9 Nm
• Ith (IEC): 10 A
• Operating temperature: -20 to 55 °C
• Storage temperature: -55 to 80 °C
• Max altitude: 3000 m
• Weight: 365 g

What’s Included

• Lovato RF829500 thermal overload relay
• Manufacturer installation and safety instructions
• Original manufacturer packaging

Applications

• Three-phase motor protection within the 70…95 A operational range
• Installations requiring phase failure/single-phase sensitive protection
• Direct mounting on Lovato BF40–BF94 contactors in motor starters
• Industrial control panels conforming to IEC/EN 60947 standards

Safety note: Install and commission only by qualified personnel. Always isolate power before work, and observe the specified current, voltage, IP20, temperature and altitude limits, as well as applicable standards.