JBK Machine Control Transformer 100VA 250VA 500VA
The JBK series is our machine tool control transformer, wound and 100% tested in our own factory in Yueqing, China. JBK transformers are the terminal-board style…
- Factory-direct pricing, no middleman markup
- Custom voltage, capacity and branding (OEM)
- MOQ from 10 pcs, production 15–25 days
- 12-month warranty with reliable support
The JBK series is our machine tool control transformer, wound and 100% tested in our own factory in Yueqing, China. JBK transformers are the terminal-board style used across CNC machines, lathes, mills, and production equipment, and they are the standard choice when a machine control cabinet needs a clean, reliable control voltage from the mains.
Key Specifications
| Specification | Value |
|---|---|
| Models | JBK-100 / JBK-250 / JBK-500 (100VA / 250VA / 500VA) |
| Input Voltage | 220V / 380V AC (selectable) |
| Output Voltage | 24V / 36V / 48V / 110V AC (custom on request) |
| Frequency | 50Hz / 60Hz |
| Terminal Board | Included, clearly marked |
| Winding Type | Copper, varnish-dipped |
| Protection | Thermal cut-out |
| Warranty | 12 months, replacement-first |
What You Get
- Genuine JBK machine control transformer with copper windings
- Terminal board included, connections clearly marked
- Standard fixing centres for drop-in replacement
- Batch test certificate with every order
- 12-month replacement-first warranty
Why Choose This Model
Machine tools are demanding on their control transformers because the contactor and solenoid coils pull a heavy inrush at energization, and the panel runs in a vibration-heavy environment. The JBK is built for that duty: copper windings, varnish-dipped for vibration and moisture resistance, and enough margin to handle the coil inrush without sagging the control voltage. When a machine stops responding to a start button, the control transformer is often the first suspect, and a drop-in JBK replacement gets the line running again fast. We keep the popular JBK sizes in production rotation so repeat orders are quick.
Typical Applications
- CNC machines, lathes and milling machines
- Machine tool control cabinets
- PLC and relay panels
- Conveyor and production lines
- Packaging and automation equipment
JBK machine control transformers, wound and 100% tested in Yueqing, China. MOQ 10 pcs, lead time 15-25 days, FOB Ningbo or Shanghai.
More from This Range
BK Control TransformerPanel-mount machine control power
TC-1000 Control TransformerHigher capacity control power
TC-D500 Step Up & Step DownDual-direction 500VA control power
ZBK Rectifier Control TransformerAC and DC control power in one unit
FAQ
What is a JBK control transformer?
A JBK control transformer is a machine tool control transformer with a terminal board, used to step mains voltage down to the control voltage for CNC and machine control panels.
What is the difference between BK and JBK?
BK transformers are the basic panel-mount type, while JBK transformers have a terminal board and are commonly used in machine tools. Both step mains down to control voltage.
What sizes are available?
We supply JBK-100, JBK-250 and JBK-500, and larger custom ratings on request.
Can it replace my existing JBK transformer?
Yes. The fixing centres and terminal board layout match the standard JBK range, so it is a drop-in replacement.