1.ApplicationJBK3 series machine tool control transformer is a kind of new product by reference to sample of SIMENS Company, it accords with standards like VDE0550, IEC204-1, IEC439, GB5226, etc. It is suitable for AC circuit of 50~60Hz, output rated voltage less than 220V, input rated voltage less than 500V, worked as control power supply for mechanical equipment and general electrical appliance and as power supply for work lighting and signal lamp.
2. Model and its meaning 
3. Installation size
| Type | Overall size(mm) | Hole distance for installation (mm) | Installation hole K or K x J(mm) | Fmax (mm) |
|---|
| Bmax | Dmax | Emax | A | C |
|---|
| JBK3-40,60 | 78 | 72 | 89 | 56±0.4 | 51±2 | 4.8 × 9 | 12 |
| JBK3-100 | 85 | 85 | 94 | 64±0.4 | 66±2 | 4.8 × 9 | 12 |
| JBK3-160 | 96 | 91 | 109 | 84±0.4 | 73±2 | 5.8 × 11 | 14 |
| JBK3-250 | 96 | 105 | 109 | 84±0.4 | 87±2 | 5.8 × 11 | 14 |
| JBK3-400 | 120 | 109 | 123 | 90±0.4 | 90±2 | 7 × 12 | 18 |
| JBK3-630 | 150 | 112 | 150 | 122±0.5 | 90±2 | 7 × 12 | 22 |
| JBK3-1000 | 160 | 195 | 151 | 126±2 | 152±2 | 7 × 12 | 18 |
| JBK3-1600 | 184 | 220 | 163 | 140±2 | 176±2 | 7 × 12 | 18 |
| JBK3-2500 | 200 | 250 | 171 | 172±2 | 200±2 | 7 × 12 | 18 |
4. Machine Tool Control Transformer | Type | Rated capacity (VA) | Uel rated input voltage (V) | Rated output voltage |
|---|
| Control | Illumination | Indication |
|---|
| JBK3-40 | 40 | 220±5% 380±5% | 110 (127) | 24 (36) | 6 (12) |
| JBK3-63 | 63 |
| JBK3-100 | 100 |
| JBK3-160 | 160 |
| JBK3-250 | 250 |
| JBK3-400 | 400 |
| JBK3-630 | 630 |
| JBK3-1000 | 1000 | Distribution of capacity for different winding may be according to the uses' request. |
| JBK3-1600 | 1600 |
| JBK3-2500 | 2500 |
