11RFA91 - T/O RELAY RFA9 0.6-1A

Why Choose the 11RFA91?

Lovato’s 11RFA91 thermal overload relay delivers dependable motor protection for three‑phase applications. With an adjustable 0.6...1 A setting, automatic resetting and phase failure/single‑phase sensitivity, it safeguards motors while minimising nuisance trips. Designed for direct mounting on BG06, BG09 and BG12 mini‑contactors, this compact unit streamlines assembly and wiring for control panels and OEM builds.

Three‑pole construction, Ui 690 V and Uimp 8 kV ensure robust performance in industrial environments. The device offers IP20 frontal protection, reliable operation from -20 to 55 °C, and use up to 3000 m altitude. Conforms to IEC/EN 60947-1 and 60947-4-1, UL508 and CSA C22.2 n° 14 for assured compliance in UK and global projects.

Key Benefits

• Phase failure/single-phase sensitivity improves protection for three-phase motors.
• Adjustable 0.6...1 A setting for precise overload matching.
• Automatic reset reduces downtime after overloads.
• Direct mounting on BG06, BG09, BG12 mini-contactors saves space.
• Three-pole design suited to three-phase applications.
• Ui 690 V and Uimp 8 kV for strong insulation and impulse withstand.
• IP20 frontal protection and -20 to 55 °C operating range.

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 11RFA91 thermal overload relay
• Installation and safety information

Applications

• Three-phase motor protection with BG06/BG09/BG12 mini-contactors
• Control panels requiring automatic-reset thermal overload protection
• OEM machinery needing phase failure/single-phase sensitive protection
• Industrial systems within Ui 690 V and IP20 frontal environments

Safety note: Install and commission only by qualified personnel. Isolate power before work, set the relay within the specified range, and follow IEC/EN 60947 and local regulations.