RF381400 Lovato RF38 overload relay 9-14 amp dol 5.5kw star/delta at 11kw

Why Choose the RF381400?

Protect three‑phase motors with the Lovato RF381400 thermal overload relay. This phase failure/single‑phase sensitive, three‑pole motor protection relay covers 9…14 A and offers manual or automatic resetting for flexible maintenance. Designed for direct mounting on BF09–BF38 contactors, it streamlines compact starters and upgrades. The robust construction and precise trip range help safeguard equipment against overload conditions, improving uptime and reliability in control panels and machinery.

Built to IEC/EN 60947-1 and 60947-4-1 with UL and CSA conformity, the RF381400 delivers dependable performance: Ui 690 V, Uimp 6 kV and IP20 frontal protection. It operates from −25 to 60 °C up to 3000 m, Pollution Degree 3, with terminals tightened to 2–2.5 Nm. Three-pole design (Ith 10 A) and a compact 160 g body suit modern panels without compromising accessibility or safety.

Key Benefits

• Phase failure/single‑phase sensitive protection for three‑phase motor safety.
• Adjustable 9…14 A setting range for accurate overload matching.
• Manual or automatic reset for flexible commissioning and maintenance.
• Direct mounting on BF09–BF38 contactors saves panel space and wiring.
• Ui 690 V and Uimp 6 kV provide robust insulation margins.
• IP20 frontal protection, Pollution Degree 3 for industrial environments.
• Reliable operation −25 to 60 °C, 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: 6 kV
• Terminal tightening torque: 2 to 2.5 Nm
• Ith (IEC): 10 A
• Operating temperature: -25 to 60 °C
• Storage temperature: -50 to 70 °C
• Max altitude: 3000 m
• Weight: 160 g

What’s Included

• Lovato RF381400 thermal overload relay
• Quick start and safety instructions
• Manufacturer datasheet (downloadable)

Applications

• Three‑phase motor protection in industrial control panels
• Pump, fan and compressor motor starters
• Conveyor and material handling drives
• General automation and machine control assemblies

Safety note: Installation and adjustment must be performed by qualified personnel with power isolated; set the 9...14 A range correctly, tighten terminals to 2–2.5 Nm, and observe specified operating conditions.