2-Pack KW7-0-A Micro Limit Switch 250V 16A Auto Reset
2-Pack KW7-0-A Micro Limit Switch 250V 16A Auto Reset
2-Pack Automatic Reset Micro Limit Switch KW7-0-A — 250V AC / 16A Silver Contact
Keep your water heater, household appliances, and industrial equipment running safely with this 2-pack of KW7-0-A automatic reset micro limit switches. Rated at 250V AC and 16A, these compact switches feature silver contacts for reliable conductivity and an automatic reset mechanism that restores the circuit as soon as conditions return to normal — no manual intervention required.
Key Features
- Model: KW7-0-A — a widely compatible micro limit switch for AC and DC control circuits
- Rated Voltage: 250V AC | Rated Current: 16A (GEMA-16A)
- Rated Frequency: 50Hz
- Silver Contact: Low contact resistance (30mΩ max) for stable, long-lasting electrical performance
- High Insulation Resistance: 2MΩ min at 500V DC
- Dielectric Strength: Electrode AC 1800V/min 50Hz; terminal-to-ground 2000V AC/min 50Hz
- Automatic Reset: Self-resetting design for hands-free operation
- Durable Construction: Aluminum alloy body with excellent heat resistance (operating range: 25°C–85°C) and corrosion resistance for stable performance in demanding environments
- Long Service Life: Rated for a minimum of 100,000 operating cycles (1×10⁵)
- Contact Opening Distance: 1.0mm
- Relative Humidity: Up to 90% RH at 20°C
- Color: Black | Pack Size: 2 pieces
Wide Application
Originally designed as a temperature limiter replacement part for water heaters, the KW7-0-A limit switch is also suitable for a broad range of household appliances and industrial machinery — anywhere precise position or circuit control is needed. It is compatible with both AC and DC control circuits, making it a versatile addition to your repair or maintenance toolkit.
Specifications at a Glance
| Model | KW7-0-A |
| Material | Aluminum alloy body |
| Rated Voltage | 250V AC |
| Rated Current | 16A |
| Frequency | 50Hz |
| Contact Resistance | 30mΩ max |
| Insulation Resistance | 2MΩ min / 500VDC |
| Dielectric Strength | 1800V AC (electrode); 2000V AC (terminal to ground) |
| Operating Temperature | 25°C – 85°C |
| Service Life | 100,000 cycles minimum |
| Contact Opening Distance | 1.0mm |
| Quantity | 2 pieces per pack |
| Country of Origin | Made in China |
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Note: Due to manual measurement, please allow a dimensional tolerance of 1–3mm. Monitor color calibration may cause slight variation from the actual product color.
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Frequently Asked Questions
Q: What appliances is the KW7-0-A micro limit switch compatible with?
A: The KW7-0-A automatic reset micro limit switch is primarily used as a temperature limiter replacement part for water heaters, but it is also widely compatible with household appliances such as washing machines, ovens, and HVAC units, as well as industrial machinery requiring position or circuit control. It works on both AC and DC control circuits.
Q: Does this switch require manual resetting after it trips?
A: No. The KW7-0-A features an automatic reset mechanism, meaning it self-resets once the trigger condition is removed — eliminating the need for manual intervention and making it ideal for automated systems and appliances.
Q: What is the rated voltage and current for this limit switch?
A: This switch is rated at 250V AC and 16A (GEMA-16A rating), making it suitable for standard mains-voltage appliance and equipment control circuits operating at 50Hz.
Q: How long will these switches last?
A: Each KW7-0-A switch is engineered for a minimum service life of 100,000 operating cycles, ensuring long-term reliability in both domestic and light industrial applications.