YBX4 Series Ultra-High Efficiency Flameproof Explosion-Proof Motors
The YBX4 Series Ultra-High-Efficiency Flameproof Motors break away from traditional low-voltage motor design methods, adopting a refined design philosophy to comprehensively redesign the motor’s electromagnetic and structural configurations. Advanced design, manufacturing processes, and production techniques are specifically applied to control various losses, thereby ensuring high efficiency.
Selection Consultation Hotline181-8268-8890
156-9170-8999
156-9170-8999
Model: YBX4 Series Ultra-High-Efficiency Flameproof Motors
Center Height: H80–H355
Power Range: 0.18 kW – 315 kW
Number of Poles: 2P–8P
Rated Voltage: 220 V, 230 V, 240 V, 380 V, 400 V, 415 V, 660 V, 690 V, 720 V, 220 V/380 V, 230 V/400 V, 240 V/415 V, 380 V/660 V, 400 V/690 V, 415 V/720 V
Rated Frequency: 50 Hz
Thermal Class: 155, 180
Protection Rating: IP55
Mounting Types: IMB3, IMB5, IMB6, IMB7, IMB8, IMB14, IMB34, IMB35, IMV1, IMV3
IMV5、IMV6、IMV15、IMV18、IMV36。
Cooling Method: IC411
Explosion-Proof Marking: Exd I, Exd IIAT4, Exd IIBT4, Exd IICT4
Features: Efficiency meets Grade 1 energy efficiency per China’s national standard GB18613-2012 and IE4 efficiency level per IEC60034-30.
Applications: Designed for use in explosive gas atmospheres to drive fans, compressors, pumps, and other general-purpose mechanical equipment; widely applied in petroleum, chemical, steel, coal, and related industries.
Introduction: The YBX4 series ultra-high-efficiency motors sold by our company comply with Grade 1 energy efficiency requirements specified in China’s national standard GB18613-2012 “Minimum Allowable Values and Efficiency Grades for Energy Efficiency of Small and Medium Three-Phase Induction Motors ”, and achieve the IE4 (50 Hz) efficiency level defined in international standard IEC60034-30-1—currently the highest implemented energy-efficiency standard for low-voltage motor series worldwide. Our company is the first in China to obtain energy-saving certification, energy-efficiency labeling, and explosion-proof compliance certificates for the full H80–H355 range, placing us at a leading position within the industry. These motors feature compact size, light weight, low noise, high efficiency and energy savings, simple structure, stable performance, and excellent reliability—especially outstanding in energy efficiency, delivering an average 1.26% higher efficiency than IE3-grade motors.
The YBX4 series breaks from traditional low-voltage motor design methodologies, adopting a refined design philosophy to comprehensively re-engineer electromagnetic and structural configurations. Targeted advanced design, manufacturing processes, and production techniques are employed to precisely control various loss components—ensuring optimal efficiency. The resulting energy savings are substantial. Its successful development will spearhead technological advancement across the industry and stimulate growth among peer enterprises and the broader national economy. We are confident that our ultra-high-efficiency products will deliver greater practicality and economic value—and bring higher returns to your enterprise.
Motor Advantages
This series offers superior performance, safe and reliable operation, and lower vibration and noise levels compared to similar products—fully compliant with environmental protection requirements.
Application Fields
Suitable for hazardous Zone 1 and Zone 2 explosive atmospheres. Widely deployed across petrochemical, coal mining, metallurgical, port, power generation, and machinery industries to drive diverse general-purpose equipment—including fans, compressors, feedwater pumps, crushers, hoists, centrifuges, machine tools, and material handling machinery—making it the ideal driving solution.
They are the ideal driving equipment for machine tools, cutting machines, transportation machinery, etc.
| YBX4 Series Explosion-Proof Motor Detailed Parameter Table | |||||||||||
| Voltage: 380 V | Frequency: 50 Hz | ||||||||||
| Motor Model | Rated Power (kW) | Rated Current （A） | Rated Speed （r/min） | Efficiency (%) (η%) | Power Factor (cosφ) | Rated Torque N.m | Locked-Rotor Torque Rated Torque Tst TN | Locked-Rotor Current Rated Current Ist TN | Maximum Torque Rated Torque Tmax TN | Noise Level (dB(A)) | Weight （kg） |
| Synchronous Speed: 3000 r/min | |||||||||||
| YBX4-80M1-2 | 0.75 | 1.7 | 2875 | 80.7 | 0.83 | 2.5 | 2.3 | 6.8 | 2.3 | 67 | 32 |
| YBX4-80M2-2 | 1.1 | 2.4 | 2875 | 82.7 | 0.83 | 3.7 | 2.3 | 7.3 | 2.3 | 67 | 33 |
| YBX4-90S-2 | 1.5 | 3.2 | 2890 | 84.2 | 0.84 | 5.0 | 2.3 | 7.6 | 2.3 | 72 | 39 |
| YBX4-90L-2 | 2.2 | 4.6 | 2890 | 85.9 | 0.85 | 7.3 | 2.3 | 7.8 | 2.3 | 72 | 46 |
| YBX4-100L-2 | 3 | 6.0 | 2891 | 87.1 | 0.87 | 9.9 | 2.3 | 8.1 | 2.3 | 76 | 57 |
| YBX4-112M-2 | 4 | 7.8 | 2914 | 88.1 | 0.88 | 13.1 | 2.3 | 8.3 | 2.3 | 77 | 68 |
| YBX4-132S1-2 | 5.5 | 10.6 | 2937 | 89.2 | 0.88 | 17.9 | 2.2 | 8.0 | 2.3 | 80 | 87 |
| YBX4-132S2-2 | 7.5 | 14.2 | 2940 | 90.1 | 0.89 | 24.4 | 2.2 | 7.8 | 2.3 | 80 | 93 |
| YBX4-160M1-2 | 11 | 20.6 | 2930 | 91.2 | 0.89 | 35.9 | 2.2 | 7.9 | 2.3 | 86 | 136 |
| YBX4-160M2-2 | 15 | 27.9 | 2930 | 91.9 | 0.89 | 48.9 | 2.2 | 8.0 | 2.3 | 86 | 144 |
| YBX4-160L-2 | 18.5 | 34.4 | 2937 | 92.4 | 0.89 | 60.2 | 2.2 | 8.1 | 2.3 | 86 | 155 |
| YBX4-180M-2 | 22 | 40.5 | 2940 | 92.7 | 0.89 | 71.5 | 2.2 | 8.2 | 2.3 | 89 | 241 |
| YBX4-200L1-2 | 30 | 54.9 | 2950 | 93.3 | 0.89 | 97.1 | 2.2 | 7.5 | 2.3 | 92 | 275 |
| YBX4-200L2-2 | 37 | 67.4 | 2950 | 93.7 | 0.89 | 119.8 | 2.2 | 7.5 | 2.3 | 92 | 300 |
| YBX4-225M-2 | 45 | 81.7 | 2960 | 94.0 | 0.89 | 145.2 | 2.2 | 7.6 | 2.3 | 92 | 420 |
| YBX4-250M-2 | 55 | 99.6 | 2965 | 94.3 | 0.89 | 177.2 | 2.2 | 7.6 | 2.3 | 93 | 477 |
| YBX4-280S-2 | 75 | 135.2 | 2970 | 94.7 | 0.89 | 241.2 | 2.0 | 6.9 | 2.3 | 94 | 640 |
| YBX4-280M-2 | 90 | 161.7 | 2970 | 95.0 | 0.89 | 289.4 | 2.0 | 7.0 | 2.3 | 94 | 697 |
| YBX4-315S-2 | 110 | 195.1 | 2975 | 95.2 | 0.90 | 353.1 | 2.0 | 7.1 | 2.2 | 96 | 1060 |
| YBX4-315M-2 | 132 | 233.6 | 2975 | 95.4 | 0.90 | 423.7 | 2.0 | 7.1 | 2.2 | 96 | 1120 |
| YBX4-315L1-2 | 160 | 279.4 | 2975 | 95.6 | 0.91 | 513.6 | 2.0 | 7.1 | 2.2 | 99 | 1290 |
| YBX4-315L2-2 | 200 | 348.6 | 2975 | 95.8 | 0.91 | 642.0 | 2.0 | 7.1 | 2.2 | 99 | 1430 |
| YBX4-355M-2 | 250 | 435.7 | 2980 | 95.8 | 0.91 | 801.2 | 2.0 | 7.1 | 2.2 | 103 | 1749 |
| YBX4-355L-2 | 315 | 549.0 | 2980 | 95.8 | 0.91 | 1009.5 | 2.0 | 7.1 | 2.2 | 103 | 2060 |
| Synchronous Speed: 1500 r/min | |||||||||||
| YBX4-80M1-4 | 0.55 | 1.4 | 1400 | 80.7 | 0.75 | 3.8 | 2.3 | 6.3 | 2.3 | 58 | 31 |
| YBX4-80M2-4 | 0.75 | 1.8 | 1400 | 82.5 | 0.75 | 5.1 | 2.3 | 6.5 | 2.3 | 58 | 32 |
| YBX4-90S-4 | 1.1 | 2.6 | 1440 | 84.1 | 0.75 | 7.3 | 2.3 | 6.6 | 2.3 | 61 | 43 |
| YBX4-90L-4 | 1.5 | 3.6 | 1445 | 85.3 | 0.75 | 9.9 | 2.3 | 6.9 | 2.3 | 61 | 47 |
| YBX4-100L1-4 | 2.2 | 4.8 | 1440 | 86.7 | 0.81 | 14.6 | 2.3 | 7.5 | 2.3 | 64 | 56 |
| YBX4-100L2-4 | 3 | 6.3 | 1440 | 87.7 | 0.82 | 19.9 | 2.3 | 7.6 | 2.3 | 64 | 62 |
| YBX4-112M-4 | 4 | 8.4 | 1445 | 88.6 | 0.82 | 26.4 | 2.3 | 7.7 | 2.3 | 65 | 74 |
| YBX4-132S-4 | 5.5 | 11.4 | 1455 | 89.6 | 0.82 | 36.1 | 2.0 | 7.5 | 2.3 | 71 | 93 |
| YBX4-132M-4 | 7.5 | 15.2 | 1455 | 90.4 | 0.83 | 49.2 | 2.0 | 7.4 | 2.3 | 71 | 105 |
| YBX4-160M-4 | 11 | 21.5 | 1460 | 91.4 | 0.85 | 72.0 | 2.2 | 7.5 | 2.3 | 75 | 141 |
| YBX4-160L-4 | 15 | 28.8 | 1460 | 92.1 | 0.86 | 98.1 | 2.2 | 7.5 | 2.3 | 75 | 153 |
| YBX4-180M-4 | 18.5 | 35.3 | 1470 | 92.6 | 0.86 | 120.2 | 2.2 | 7.7 | 2.3 | 76 | 235 |
| YBX4-180L-4 | 22 | 41.8 | 1470 | 93.0 | 0.86 | 142.9 | 2.2 | 7.8 | 2.3 | 76 | 255 |
| YBX4-200L-4 | 30 | 56.6 | 1470 | 93.6 | 0.86 | 194.9 | 2.2 | 7.2 | 2.3 | 79 | 285 |
| YBX4-225S-4 | 37 | 69.6 | 1480 | 93.9 | 0.86 | 238.8 | 2.2 | 7.3 | 2.3 | 81 | 360 |
| YBX4-225M-4 | 45 | 84.4 | 1480 | 94.2 | 0.86 | 290.4 | 2.2 | 7.4 | 2.3 | 81 | 390 |
| YBX4-250M-4 | 55 | 102.7 | 1480 | 94.6 | 0.86 | 354.9 | 2.2 | 7.4 | 2.3 | 83 | 490 |
| YBX4-280S-4 | 75 | 136.3 | 1480 | 95.0 | 0.88 | 484.0 | 2.2 | 6.7 | 2.3 | 86 | 718 |
| YBX4-280M-4 | 90 | 163.2 | 1480 | 95.2 | 0.88 | 580.7 | 2.2 | 6.9 | 2.3 | 86 | 816 |
| YBX4-315S-4 | 110 | 199.1 | 1485 | 95.4 | 0.88 | 707.4 | 2.2 | 6.9 | 2.2 | 93 | 1050 |
| YBX4-315M-4 | 132 | 238.4 | 1485 | 95.6 | 0.88 | 848.9 | 2.2 | 6.9 | 2.2 | 93 | 1210 |
| YBX4-315L1-4 | 160 | 285.1 | 1485 | 95.8 | 0.89 | 1029.0 | 2.2 | 6.9 | 2.2 | 97 | 1290 |
| YBX4-315L2-4 | 200 | 355.7 | 1485 | 96.0 | 0.89 | 1286.2 | 2.2 | 6.9 | 2.2 | 97 | 1400 |
| YBX4-355M-4 | 250 | 439.6 | 1490 | 96.0 | 0.90 | 1602.3 | 2.2 | 6.9 | 2.2 | 101 | 1805 |
| YBX4-355L-4 | 315 | 553.9 | 1490 | 96.0 | 0.90 | 2019.0 | 2.2 | 6.9 | 2.2 | 101 | 2130 |
| Synchronous Speed: 1000 r/min | |||||||||||
| YBX4-90S-6 | 0.75 | 2.0 | 934 | 78.9 | 0.72 | 7.7 | 2.1 | 5.8 | 2.0 | 57 | 42 |
| YBX4-90L-6 | 1.1 | 2.8 | 945 | 81.0 | 0.73 | 11.1 | 2.1 | 5.9 | 2.0 | 57 | 44 |
| YBX4-100L-6 | 1.5 | 3.7 | 945 | 82.5 | 0.74 | 15.2 | 2.1 | 6.0 | 2.0 | 61 | 49 |
| YBX4-112M-6 | 2.2 | 5.4 | 960 | 84.3 | 0.74 | 21.9 | 2.1 | 6.0 | 2.0 | 65 | 69 |
| YBX4-132S-6 | 3 | 7.2 | 964 | 85.6 | 0.74 | 29.7 | 2.0 | 6.2 | 2.0 | 69 | 83 |
| YBX4-132M1-6 | 4 | 9.5 | 965 | 86.8 | 0.74 | 39.6 | 2.0 | 6.8 | 2.0 | 69 | 91 |
| YBX4-132M2-6 | 5.5 | 12.7 | 965 | 88.0 | 0.75 | 54.4 | 2.0 | 7.1 | 2.0 | 69 | 99 |
PREVIOUS：YX Series 6 kV / 10 kV High-Efficiency High-Voltage MotorsNEXT：YJTKK Series Three-Phase Asynchronous High-Voltage Variable-Frequency Motor (10 kV)
