Product Description
The YH02-A Electromagnetic Switch is a magnetic contactor-style safety switch used mainly in industrial machines, power tools, and motor control systems. It combines a push-button start/stop mechanism with an internal electromagnetic holding (latching) circuit, which helps prevent accidental restart after power loss.
It is commonly used in machines where safety and automatic cut-off protection are required.
Key Features
• Electromagnetic latching (self-holding) start switch
• Prevents automatic restart after power failure (safety feature)
• Push-button ON/OFF control (usually green start / red stop)
• Built-in under-voltage protection function
• Suitable for motor and machine tool control
• Heavy-duty design for industrial applications
• Supports overload protection (with external relay/thermal overload)
• IP-rated enclosure for dust and splash resistance (variant dependent)
• Double-pole power cut-off for safer switching
• Long mechanical and electrical life cycle
Specifications
- Product Type: Electromagnetic Safety Switch / Magnetic Starter Switch
- Model: YH02-A
- Operating Voltage: 220–240V AC (coil), 120V/250V variants available
- Rated Current: 8A–16A (AC-3 duty, variant dependent)
- Frequency: 50/60Hz
- Contact Type: Normally open / self-latching relay contact system
- Pin Configuration: 4-pin / 5-pin (variant dependent)
- Protection Class: IP55 (typical)
- Operating Function: Start/Stop push-button with magnetic hold-in coil
- Reset Feature: Manual restart after power interruption
- Enclosure Material: Industrial-grade plastic (ABS or similar)
- Operating Temperature: -20°C to +55°C / +60°C (variant dependent)
- Application: Machine tools, pumps, compressors, power tools, industrial motors, garden machinery

