11RF905 - T/O RELAY RF9 0.3-0.5A

Why Choose the 11RF905?

Lovato 11RF905 thermal overload relay provides sensitive motor protection for three-phase applications. Phase failure/single-phase sensitive and three-pole, it trips reliably within the 0.3...0.5 A operational range. A manual resetting mechanism supports controlled restarts, while direct mounting on BG06, BG09 and BG12 mini-contactors saves panel space and wiring time. Ideal for compact motor circuits requiring dependable overload and phase-loss protection.

Engineered for robust performance, the relay offers Ui 690 V insulation and 8 kV impulse withstand, with an IP20 frontal degree for finger-safe access. Ith is rated at 10 A. It operates from -20 to 55 °C and stores from -55 to 70 °C, up to 3000 m altitude. Conforms to IEC/EN 60947-1, IEC/EN 60947-4-1, UL508 and CSA C22.2 n° 14.

Key Benefits

• Phase failure/single-phase sensitive protection for reliable motor safeguarding.
• Designed for 0.3...0.5 A motor circuits.
• Manual reset supports controlled, safe restarts after a trip.
• Direct mounting on BG06/BG09/BG12 mini-contactors simplifies installation.
• Three-pole design compatible with three-phase motor protection.
• Rated insulation Ui 690 V and Uimp 8 kV for robust dielectric performance.
• Operates -20 to 55 °C; IP20 frontal degree for safer handling.
• Compliant with IEC/EN 60947-1/-4-1, UL508 and CSA standards.

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 11RF905 thermal overload relay
• Mounting and connection instructions
• Manufacturer data sheet (downloadable)
• Protective packaging

Applications

• Protection of small three-phase motors within 0.3...0.5 A circuits
• OEM panels using Lovato BG06, BG09 or BG12 mini-contactors
• Industrial control cabinets requiring manual reset after overload trips
• Motor circuits needing phase failure/single-phase sensitive protection

Safety note: Installation and setting should be performed by qualified personnel. Select for 0.3...0.5 A circuits, follow applicable standards, and operate within the specified environmental limits.