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Description
The KEDU HY57B is an electromagnetic motor switch with a built-in no-voltage release, designed for 230/400 V AC machines. It is used on selected Güde machines and prevents automatic restart after a power failure.
Practical Information
The HY57B is used on stationary workshop machines with either single-phase or three-phase motors.
Always verify the switch dimensions, terminal layout and electrical specifications before replacement.
Technical Specifications
- Manufacturer: KEDU
- Model: HY57B
- Component Type: Electromagnetic Motor Switch
- UL File: E195428
- Insulation Voltage (Ui): 690 V
- Temperature Class: 85 °C
Standards
- EN 60947-4-1
- EN 60947-5-1
- EN 60947-5-5
Electrical Ratings
- 125 V AC: 18 A
- 250 V AC: 12 A
- DC-13: 24 V DC / 2 A
- AC-1: 16/12 A – 250/400 V~
- AC-15: 10/8 A – 250/400 V~
Used on
| Brand |
Model |
Machine Type |
| Güde |
GTB 16/500 VARIO |
Drill Press |
This compatibility list is continuously updated as additional machines are identified.
Also Known As
- KEDU HY57B
- HY57B
- HY57-B
- HY57B Motor Switch
- HY57B Start/Stop Switch
Original Spare Part Numbers
| Brand |
Spare Part Number |
| Güde |
55220-01002 |
Important
Always verify the switch dimensions, terminal layout and electrical specifications before replacement.
Always wire the switch according to the terminal numbering or the wiring diagram – never rely solely on wire colours.

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