General Overview & Structural Features
General Application
The JBK3 and JBK5 series machine tool control transformer is engineered for industrial AC circuits at 50–60Hz with input voltages of 660V or below. Manufactured in China by Yongfan Electric (YOF®), it serves as a reliable control power supply for general electrical appliances across various machine tools and industrial mechanical equipment, and also powers local lighting and indicator lamps.
Structural Features & Wholesale Advantages
Developed as an upgraded replacement for standard control transformers, this series adopts imported raw materials and advanced manufacturing technology. It offers key industrial advantages, including reliable operation, low energy dissipation, a compact footprint, safe terminal wiring, and broad applicability for OEM machinery manufacturers, commercial panel builders, and bulk wholesale distributors.
Model Designation & Nomenclature
Technical Parameter Table (Refer to Table 1 for Voltage Type)
| Specifications | Primary voltage(V) | Secondary voltage(V) | ||
|---|---|---|---|---|
| Control | Lighting | Indicator signal | ||
| 40VA | 380, 220 or 380(220) | 110(27)(220) (48) | 24(36) | 6(12) |
| 63VA | ||||
| 100VA | ||||
| 160VA | ||||
| 250VA | ||||
| 400VA | ||||
| 630VA | ||||
| 1000VA | ||||
| 1600VA | ||||
| 2000VA | ||||
| 2500VA | ||||
Technical Parameter Table 2
| Capacity (VA) |
Capacity distribution of each winding(VA) | Capacity (VA) |
Capacity distribution of each winding(VA) | ||||
|---|---|---|---|---|---|---|---|
| Control | Lighting | Indication | Control | Lighting | Indication | ||
| 40 | 40 | 400 | 400 | ||||
| 40 | 390 | 10 | |||||
| 37 | 3 | 320 | 80 | ||||
| 310 | 80 | 10 | |||||
| 63 | 63 | 630 | 630 | ||||
| 60 | 3 | 610 | 20 | ||||
| 20 | 40 | 3 | 510 | 120 | |||
| 60 | 3 | 490 | 120 | 20 | |||
| 100 | 100 | 100 | 1000 | ||||
| 100 | 980 | 20 | |||||
| 90 | 10 | 880 | 120 | ||||
| 90 | 10 | 860 | 120 | 20 | |||
| 40 | 60 | ||||||
| 50 | 40 | 10 | |||||
| 160 | 160 | 1600 | 1600 | ||||
| 90 | 60 | 10 | 1580 | 20 | |||
| 100 | 60 | 1400 | 200 | ||||
| 150 | 10 | 1380 | 200 | 20 | |||
| 250 | 250 | 2000 | 2000 | ||||
| 240 | 10 | 1980 | 20 | ||||
| 170 | 80 | 1800 | 200 | ||||
| 160 | 80 | 10 | 1780 | 200 | 20 | ||
Outline and Mounting Size
| Rated capacity(VA) | Outline size(mm) | Mounting hole J×K(mm) |
||||
|---|---|---|---|---|---|---|
| B max | D max | E max | A | C | ||
| 40 | 79 | 73 | 92 | 66 | 47 | 5×9 |
| 63 | 79 | 73 | 92 | 66 | 47 | 5×9 |
| 100 | 85 | 89 | 97 | 72 | 64 | 5×9 |
| 160 | 97 | 91 | 105 | 84 | 73.5 | 7×14 |
| 250 | 97 | 105 | 105 | 84 | 85 | 7×14 |
| 400 | 121 | 103 | 122 | 100 | 85 | 6×10 |
| 630 | 151 | 111 | 143 | 133 | 90 | 6×10 |
| 1000 | 215 | 170 | 150 | 142 | 160 | 8×14 |
| 1600 | 245 | 185 | 155 | 155 | 180 | 8×14 |
| 2000 | 275 | 210 | 175 | 175 | 210 | 8×14 |
China Factory Direct Wholesale & Custom OEM/ODM Specification Service
Manufactured by China · Yongfan Electric Co., Ltd. (Established 2009, Dongfeng Industrial Zone, Liushi Town, Yueqing City, Zhejiang Province, China). All products are produced under ISO9001 quality management systems and CCC certification. Bulk wholesale orders, OEM/ODM custom winding configurations, and private label services are supported.
