TECO TEB4 explosion-proof motor is an IE4 high efficiency flameproof motor designed for hazardous industrial applications. The TEB4 series features Exd IIBT4 and Exd IICT4 explosion-proof protection, GB and IEC standards compliance, and reliable variable frequency operation.
Manufactured by TECO Electric & Machinery Co., Ltd., this explosion-proof motor provides high energy efficiency, stable performance and safe operation for industrial equipment installed in hazardous areas.
TECO TEB4 Explosion-Proof Motor Technical Parameters
| Item | Specification |
| Brand | TECO |
| Model | TEB4 (AFMY / AFMU) |
| Motor Type | Squirrel Cage Induction Motor (SCIM) |
| Design Standard | GB / IEC |
| Efficiency Class | GB2 / IE4 |
| Explosion-Proof Rating | Exd IIBT4 / Exd IICT4 |
| Rated Voltage |
Frame 80-100: 200V-480V Frame 112-132: 200V-690V Frame 160-355: 200V-1140V |
| Rated Frequency | 50Hz |
| Output Power | 0.75kW – 315kW |
| Pole Number | 2 – 6 Poles |
| Duty Cycle | Continuous Duty S1 |
| Service Factor | SF1.0 |
| Frame Size | 80M – 355L |
| Protection Grade | IP55 Standard / IP65 Optional |
| Cooling Method | IC411 Surface Cooling |
| Certification | GB / IECEx Explosion-Proof Certification |
TECO TEB4 Variable Frequency Explosion-Proof Motor Performance
The TEB4 explosion-proof motor supports variable frequency operation and provides flexible torque control for different industrial loads.
| Operating Mode | Frequency Range |
| Decreasing Torque | 5Hz – 50Hz |
| Constant Torque | 25Hz – 50Hz |
| Constant Power | 50Hz – 60Hz |
TEB4 Explosion-Proof Motor Application Conditions
| Ambient Temperature | -20℃ ~ 50℃ |
| Humidity | Below 90% (Non-condensing) |
| Altitude | Below 1000 meters |
| Hazardous Location | Zone 1, Ex d Group IIA / IIB / IIC |
| Power Supply Variation | Voltage ±10%, Frequency ±5% |
TECO TEB4 Motor Mounting and Operation
The TEB4 series supports multiple mounting configurations for different industrial equipment installation requirements.
- AFMY: Horizontal Foot Mounted B3 (IM1001)
- AFMU: Horizontal Flange Mounted B5 (IM3001)
- AFMY: Foot and Flange Mounted B35 (IM2001)
- AFMU: Vertical Flange Mounting V1 (IM3011)
The motor supports direct full-voltage starting and Y-Δ star-delta starting. Direct coupling transmission is recommended. The motor can operate clockwise and support bidirectional rotation.
TEB4 Explosion-Proof Motor Applications
TECO TEB4 IE4 explosion-proof motors are suitable for industries requiring high efficiency and explosion protection.
- Oil and gas equipment
- Chemical processing systems
- Mining machinery
- Industrial pumps and fans
- Hazardous area production equipment
- Industrial automation systems
For more explosion-proof motor solutions, visit our explosion-proof motors page.
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