YFBX4
YFBX4 Series High-Efficiency Dust Ignition-Proof Three-Phase Induction Motor
The same dust ignition-proof construction as YFBX3, one efficiency grade higher — grade 2 of GB 18613—2020, corresponding to IE4.
A totally enclosed dust ignition-proof three-phase induction motor meeting grade 2 of GB 18613—2020. Protection is by enclosure to GB/T 3836.1-2021 and GB/T 3836.31-2021, marked Ex tb IIIC T135 °C Db.
Frame span and voltage coverage match YFBX3, so the choice between them is an efficiency and price decision rather than a design one.
Core specifications
| Parameter | Value |
|---|---|
| Frame size | H80 – H355 mm |
| Power range | 0.18 – 315 kW |
| Explosion protection | Ex tb IIIC T135 °C Db |
| Efficiency class | IE4 · GB 18613—2020 grade 2 |
| Voltage | 380 V · 660 V · 1140 V · 380/660 V · 660/1140 V, 50 Hz (custom on request) |
| Protection degree | IP65 |
| Thermal class | 155 (F), assessed to class B rise |
| Cooling | IC411 |
| Enclosure style | YX3 profile |
Standards and certification
- GB/T 3836.1-2021
- GB/T 3836.31-2021 (protection by enclosure "t")
- Q/1083 SLJ 040-2023 (frames 80–355)
- GB 18613—2020 grade 2
Typical applications
- Combustible dust atmospheres on continuous duty where efficiency accumulates
- Dust collection plant, material handling and process areas with settled dust
Selection guide
FAQ
Downloads
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