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Description
The KEDU DZ4 (KJD20-2) is an ON/OFF safety switch with a built-in no-voltage release for 220–240 V machines. It prevents automatic restart after a power failure and is used on selected JET woodworking machines.
DZ4 is the model designation of the complete switch, while KJD20-2 is the internal switch mechanism.
Practical Information
The KEDU DZ4 uses the KJD20-2 switch mechanism and may be found on different machines under different spare part numbers.
Always compare the product images, dimensions, terminal layout and electrical specifications before ordering.
Technical Specifications
- Manufacturer: KEDU
- Model: DZ4
- Switch Mechanism: KJD20-2
- Component Type: ON/OFF Safety Switch with No-Voltage Release
- Voltage: 220–240 V AC
- Protection Rating: IP54
- UL File: E195428
Standards
Electrical Ratings
- 10(8) A / 250 V AC – 5E4
- Control Voltage (Uc): 220–240 V AC
Patents
- Patent: 97324053.9
- Patent: 96211305.0
Used on
| Brand |
Model |
Machine Type |
| JET |
JDP-10 |
Drill Press |
| JET |
JMP-10 |
Thickness Planer |
| JET |
JMP-13 |
Thickness Planer |
This compatibility list is continuously updated as additional compatible machines are identified.
Also Known As
- KEDU DZ4
- DZ4
- KEDU DZ4 (KJD20-2)
- KEDU KJD20-2 DZ4
- DZ4 On/Off Switch
- DZ4 Safety Switch
- KJD20-2 DZ4
Original Spare Part Numbers
| Brand |
Spare Part Number |
| JET |
B8-09557 |
| JET |
2850FW5U68 |
Important
DZ4 is the model designation of the complete switch, while KJD20-2 is the internal switch mechanism.
Although the switch mechanism is the same as in other KJD20-2 switches, the housing, mounting dimensions and terminal layout may differ.
Always compare the product images, dimensions and electrical specifications before replacement.
Always wire the switch according to the terminal numbering or the wiring diagram—never rely solely on wire colours.
Images and Wiring Diagram
Additional product images and wiring diagrams can be found below.
 
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