This is the 250V variant of the BK05 250V 5A 80°C Plastic Thermostatic Temperature Switch NC in Temperature & Humidity Sensor. Available at ₹41.89 (₹35.50 + GST) with free shipping across India.
Product Description
The BK05 250V 5A 80°C Plastic Thermostatic Temperature Switch NC is a thermostat that uses a bimetal disc as the temperature sensor.
When the electrical appliance operates normally, the bimetal disc is free and the contacts are closed.
When the ambient temperature reaches the preset operating temperature, the bimetal disc bends and jumps due to heating, opening the contacts and cutting off the circuit to regulate the temperature. When the electrical appliance cools down to the reset temperature, the contacts close again and reconnect the circuit.
This thermostat is widely used in home appliances and electrical equipment that need thermal protection, such as air conditioner motors, transformers, and thermal appliances.
Features:
- Mechanical making and breaking of electrical circuits.
- Easy to use, small and handy module.
- Useful in a variety of applications.
- Acts as temperature operated circuit breaker.
Specification:
| Model | KSD9700 |
|---|---|
| Rated Voltage(V) | 250 |
| Operating Current (A) | 5 |
| Operating Temperature Range (°C): | 80 |
| Cable Length (cm) | 7 |
| Head Dimensions(mm) | 20x8x4 |
| Weight (gm) | 3 |
| Shipping Weight | 0.005 kg |
| Shipping Dimensions | 4 × 3 × 1 cm |
Package Includes:
1 x BK05 250V 5A 80°C Plastic Thermostatic Temperature Switch NC.
Datasheet:
BK05 250V 5A 80°C Plastic Thermostatic Temperature Switch Overview
The BK05 250V 5A 80°C Plastic Thermostatic Temperature Switch NC is a compact bimetallic thermostat designed to break electrical circuits when temperatures exceed 80°C. Ideal for adding reliable over‐temperature protection in small appliances and electrical equipment.
Key Features of BK05 250V 5A 80°C Plastic Thermostatic Temperature Switch
- Bimetallic disc sensing element that trips at 80 °C for precise thermal protection
- Normally‐closed (NC) contacts rated at 250 V, 5 A AC for common household and industrial circuits
- Compact plastic head measuring 20 × 8 × 4 mm for tight spaces
- 73 mm insulated cable facilitates easy wiring and placement
- Mechanical make‐and‐break action ensures clear open/close switching without electronics
- Genuine product & fast shipping from Zbotic—in stock and ready to dispatch
Applications and Use Cases
- Over‐temperature protection in air conditioner motors and compressor units
- Thermal safety cutout for transformers and power supplies
- Temperature‐regulated switching in thermal appliances like heaters or ovens
- Backup cutoff in battery chargers and power converters
- Safety switch in small industrial machinery and OEM assemblies
How to Use BK05 250V 5A 80°C Plastic Thermostatic Temperature Switch
Mount the switch’s plastic head close to the heat source using cable ties or mounting clips, then wire its leads in series with your load. Ensure the bimetal sensing surface contacts the monitored component, tighten connections securely, and power up the circuit to let the thermostat open at 80 °C and reset automatically upon cooling.
Why Buy from Zbotic?
- Genuine Products: All items sourced from authorized distributors
- Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
- Free Shipping: Free delivery on qualifying orders
- COD Available: Cash on Delivery, UPI, cards, net banking
- Technical Support: Expert help for setup and troubleshooting
- Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
Is the BK05 switch normally closed or normally open?
The BK05 is a normally closed (NC) thermostat, meaning its contacts remain closed under normal temperatures and open when the sensor reaches 80 °C.
What happens after the switch trips at 80 °C?
When the ambient temperature hits the 80 °C trip point, the bimetal disc snaps open, interrupting the circuit. Once the device cools below its release temperature, the disc resets and the contacts close automatically.
Can I install the BK05 switch on a motor housing?
Yes. Affix the switch head to the motor housing or bracket using cable ties or mounting clips, ensuring good thermal contact. Then wire it in series with your motor’s power lead for effective over-temperature protection.
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Read More →Technical Specifications
| Model | BK05 |
|---|---|
| Operating Voltage | 250V |
| Current Rating | 5A |
| Max Temperature | 80°C |
| SKU | AI2843 |
| Weight | 0.0 kg |
| Availability | In Stock |
Applications & Use Cases
The BK05 250V 5A 80°C Plastic Thermostatic Temperature Switch NC is a versatile temperature & humidity sensor used across a wide range of applications including weather stations, greenhouse monitoring, HVAC systems, cold chain logistics, and server room monitoring.
Common use cases:
- Building a home weather station with Arduino
- Monitoring greenhouse conditions via IoT
- Alerting when server room temperature exceeds threshold
This product is ideal for IoT developers, agricultural engineers, and home automation enthusiasts.
Technical Tip: DHT22 offers better accuracy than DHT11. For precision applications, use SHT31 or BME280. Ensure adequate ventilation around the sensor.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
