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RFN380400 - T/O RELAY2 5-4A MAN/AUTO
MPN: RFN380400
Special Price
£47.42
£39.52
Regular Price
£79.03
Why Choose the RFN380400?
The Lovato RFN380400 Thermal Overload Relay delivers dependable motor protection within a 2.5…4 A range. This three‑pole, three‑phase unit mounts directly on BF09…BF38 contactors and offers manual or automatic resetting to suit your control scheme. Classified as non phase failure / non single‑phase sensitive, it safeguards against thermal overloads while integrating neatly into BF-series installations for compact, efficient assemblies.
Built for real‑world panels, the device carries Ui 690 V and 6 kV impulse withstand, with IP20 frontal protection. It operates reliably from −25 to 60 °C up to 3000 m altitude, Pollution Degree 3. Conformance to IEC/EN 60947-1 and 60947-4-1, plus UL508 and CSA, supports global acceptance. A compact 160 g form factor and precise 2–2.5 Nm terminal torque aid straightforward, repeatable installation.
Key Benefits
- Adjustable protection range 2.5…4 A for precise motor matching.
- Direct mounting on BF09…BF38 contactors saves panel space.
- Manual or automatic reset options suit varied control strategies.
- Three‑pole design for reliable three‑phase motor protection.
- IP20 frontal protection for safer front-of-panel access.
- High Ui 690 V and Uimp 6 kV for robust insulation performance.
- Wide −25 to 60 °C operating temperature for harsh environments.
- Compliant with IEC/EN 60947 and UL/CSA for assured quality.
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 RFN380400 thermal overload relay
- Installation and safety information
Applications
- Motor protection on BF09…BF38 contactor assemblies
- Pumps, fans and conveyors within 2.5…4 A motor currents
- Industrial control panels requiring thermal overload protection
- Compressors and machine tools on three‑phase supplies
Frequently Asked Questions
What current range does the RFN380400 protect?
The adjustable operational current is 2.5…4 A. Set to match the motor’s full‑load current.
Which contactors is it compatible with?
It mounts directly on BF09…BF38 contactors in the BF series.
Does it support manual or automatic reset?
Yes—reset mode can be manual or automatic. Choose the option to suit your application.
What are its environmental and protection ratings?
IP20 frontal protection; operating temperature −25 to 60 °C; maximum altitude 3000 m.
Which standards does it conform to?
IEC/EN 60947-1 and IEC/EN 60947-4-1, plus UL508 and CSA C22.2 n° 14.
Safety note: Ensure installation and commissioning by qualified personnel. Isolate power before wiring, set protection within the 2.5…4 A range, tighten terminals to 2–2.5 Nm, and observe applicable IEC/EN 60947 guidelines.
| Manufacturer Part Number | RFN380400 |
|---|---|
| Manufacturer | Lovato |
| HS Code | 85364900 |
| Barcode | 8013975169766 |
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