11RFA933 - T/O RELAY RFA9 2-3.3A

Why Choose the 11RFA933?

Protect three‑phase motors with the Lovato 11RFA933 thermal overload relay. Sensitive to phase failure and single‑phasing, it delivers dependable protection across a 2.0…3.3 A setting range. Automatic resetting supports swift recovery after overload, while direct mounting on BG06, BG09 and BG12 mini‑contactors streamlines installation. With Ui 690 V and IP20 frontal protection, it integrates neatly into industrial control panels.

Built for resilience, this three‑pole motor protection relay conforms to IEC/EN 60947‑1, IEC/EN 60947‑4‑1, UL508 and CSA C22.2 n° 14. It offers 8 kV impulse withstand, 10 A Ith and reliable operation from −20 to 55 °C up to 3000 m altitude. With Pollution degree 3 and a compact 116 g design, it suits demanding environments.

Key Benefits

• Phase failure and single‑phase sensitive for enhanced motor protection
• Automatic resetting minimises downtime after transient overload conditions
• 2.0…3.3 A adjustable range suits compact three‑phase motors
• Direct mounting on BG06, BG09, BG12 speeds panel installation
• Rated insulation voltage Ui 690 V for robust applications
• 8 kV impulse withstand and IP20 frontal protection
• Conforms to IEC/EN, UL, CSA standards for assured compliance

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 11RFA933 thermal overload relay
• Mounting and adjustment instructions
• Safety and compliance information
• Manufacturer datasheet (downloadable)

Applications

• Protection of three‑phase motors within 2.0…3.3 A settings
• Direct retrofit on Lovato BG06, BG09 and BG12 mini‑contactors
• Industrial control panels requiring automatic resetting overload protection
• OEM machinery and equipment with phase failure sensitivity

Safety note: Installation and adjustment must be performed by qualified personnel. Isolate power before work, set the relay to the motor’s rated current, and operate within the specified environmental limits.