RF91 Lovato RF9 overload relay BG mini contactors 0.6-1 amp 0.37 kw

Why Choose the 11RF91?

Designed for reliable motor protection, the Lovato 11RF91 thermal overload relay safeguards three-phase motors with phase failure/single‑phase sensitivity. Covering 0.6…1 A operational current and manual resetting, this three‑pole device mounts directly on BG06, BG09 and BG12 mini‑contactors. With IP20 frontal protection and robust insulation up to 690 V Ui, the 11RF91 offers compact, dependable performance for OEM panels and maintenance upgrades.

Built to international standards IEC/EN 60947-1 and 60947-4-1, plus UL508 and CSA C22.2 n° 14, this relay withstands 8 kV impulse, Ith 10 A, and operates from −20 to 55 °C up to 3000 m. A clear manual reset supports safe fault recovery, while the compact 116 g design and 2.3 Nm terminal torque make installation straightforward in space‑constrained control cabinets.

Key Benefits

• Phase failure/single‑phase sensitive protection for motor safety.
• Adjustable 0.6…1 A setting for precise coordination with small motors.
• Manual reset allows controlled restart after overload events.
• Direct mounting on BG06, BG09, BG12 mini‑contactors saves panel space.
• Three‑pole design suited to three‑phase applications.
• IP20 frontal protection helps reduce accidental contact risk.
• High dielectric strength: Ui 690 V and Uimp 8 kV.
• Operates −20…55 °C, suitable for sites 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: 2.3 to 2.3 Nm
• Ith (IEC): 10 A
• Operating temperature: -20 to 55 °C
• Storage temperature: -55 to 70 °C
• Max altitude: 3000 m
• Weight: 116 g

What’s Included

• Lovato 11RF91 thermal overload relay unit
• Direct‑mount compatible housing for BG06/BG09/BG12 mini‑contactors
• Manufacturer documentation (datasheet/installation guidance)

Applications

• Motor overload protection for three‑phase machinery within 0.6…1 A
• OEM control panels using Lovato BG mini‑contactors
• Pumps, fans and conveyors requiring manual reset after trips
• Upgrades and maintenance of compact motor starters

Safety note: Isolate power before installation and adjustment. Set the current within 0.6…1 A according to motor FLC, use only with compatible BG mini‑contactors, and follow applicable IEC/EN wiring practices.