11RFN905 - T/O RELAY RFN9 0.3-0.5A

Why Choose the 11RFN905?

Lovato 11RFN905 thermal overload relay safeguards low-current three-phase motors with precise 0.3...0.5 A protection. Designed as a non phase failure / non single-phase sensitive motor protection relay, it offers dependable trip performance without nuisance tripping from asymmetry. The three-pole device features manual resetting and direct mounting on BG06, BG09 and BG12 mini-contactors, simplifying compact panel layouts and reducing wiring time.

Engineered for reliability, the 11RFN905 provides IP20 frontal protection, a rated insulation voltage of 690 V and 8 kV impulse withstand. It operates from -20 to 55 °C up to 3000 m altitude, with Pollution degree 3 construction. Conforming to IEC/EN 60947-1 and 60947-4-1, plus UL508 and CSA C22.2 n° 14, it supports robust control panel integration across global markets.

Key Benefits

• Precise 0.3...0.5 A thermal protection for low-current three-phase motors.
• Three-pole design for balanced protection across all motor phases.
• Manual reset for controlled restarts and straightforward maintenance.
• Direct mounting on BG06, BG09 and BG12 mini-contactors saves space.
• IP20 frontal protection enhances operator safety during panel access.
• Rated 690 V Ui and 8 kV impulse withstand for robust insulation.
• Operates -20 to 55 °C and up to 3000 m altitude.

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: 123 g

What’s Included

• Lovato 11RFN905 thermal overload relay
• Mounting and operation leaflet
• Manufacturer datasheet (downloadable)
• Protective packaging

Applications

• Three-phase motor protection at 0.3–0.5 A
• Direct mounting with BG06, BG09 and BG12 mini-contactors
• OEM and panel builder control assemblies requiring manual reset
• Installations operating within -20 to 55 °C and up to 3000 m

Safety note: Install and commission only by qualified personnel. Always isolate power before work, adhere to the stated current and environmental limits, and follow applicable IEC/EN standards and manufacturer instructions.