Description
The KJD17B Electromagnetic Switch (Waterproof) is a no-volt release (NVR) safety push-button switch used to control power tools and small industrial machines. It is designed so that the machine will not restart automatically after a power cut, improving operator safety.
It is commonly used in table saws, grinders, drilling machines, CNC tools, and woodworking equipment.
Key Features
• Electromagnetic no-volt release (NVR) safety switch
• Waterproof and dust-resistant design (typically IP54–IP55)
• Prevents automatic restart after power failure
• Suitable for single-phase motor control applications
• 4-pin / 5-pin terminal versions available
• High reliability with long electrical life
• Compact design for machine panel mounting
• Suitable for industrial and workshop power tools
• Overload and under-voltage protection (in some variants)
• Easy wiring and replacement for KEDU-style systems
Specifications
- Product Type: Electromagnetic Safety Push Button Switch
- Model: KJD17B
- Rated Voltage: 220–240V AC / 120V AC (variant dependent)
- Rated Current: 16A (typical), up to 18A AC-1 load
- Motor Capacity: Up to ~2 HP (depending on version)
- Contact Type: 2NO / 1NO + 1NC (variant dependent)
- Terminal Type: 4-pin or 5-pin connection
- Protection Rating: IP54–IP55 (waterproof/dustproof)
- Operation Type: ON / OFF with no-volt release
- Coil Voltage: 220–240V AC (common variant)
- Material: Flame-retardant industrial plastic housing
- Application: Table saws, grinders, drill presses, CNC machines, woodworking tools, industrial motor control

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