BC1 25W Variable Resistor Rheostat
The BC-1 wire wound resistor features high resolution capability with a wide resistance range. Designed for durability, it offers excellent heat resistance, humidity resistance, and wear resistance characteristics. Suitable for voltage and current adjustment in power equipment and circuits not exceeding 380V AC or 220V DC.
Technical Specifications
- Maximum working voltage: 1000V with 2500V insulation voltage
- Temperature rise: 25-100W models ≤300K; ≥150W models ≤350K
- Sliding travel: 25-50W models: 280±5°; ≥100W models: 300±5°
- Linear deviation: Not greater than ±10% across entire travel
- Rotation durability: 5,000 cycles with ≥90% travel
- High temperature test: 40°C for 6 weeks with insulation resistance <1.5mΩ
The BC1 series of rotor-arm sliding wire porcelain disk variants are designed for voltage and current adjustment in industrial electrical equipment up to 500 volts. The resistor uses high-temperature enamel-coated resistance wire wound on a ceramic skeleton, with a sliding contact mechanism for variable resistance. The unit features a protective metal enclosure with handwheel operation.
Technical Parameters
| ELECTRICAL CHARACTERISTICS |
|
ENVIRONMENT CHARACTERISTICS |
|
| Standard resistance range |
1Ω~5KΩ |
Temperature range |
-55℃~350℃ |
| Resistance tolerance |
±10% |
Vibration |
10~200HZ,40m/S², 3h△R≤±3%R |
| Terminal resistance |
≤0.2% or 1Ω |
Temperature cycling |
-55°C,30min to 85°C,30min △R<+3%R,R1>500MΩ |
| Insulation resistance |
≥100mΩ(500Vdc) |
Humidity |
40±2°C,RH:95%-98% 48h△R≤±3%R,R12100MΩ |
| Maximum temperature |
350℃ |
Load durability |
R≤1KΩ,5000 cycles R≤1KΩ, 1000 cycles△R≤±5%R |
| Mechanical travel |
300°±10° |
Shock resistance |
60~100 times/min, 150m/s²,4000 times |
Applications
Suitable for telecommunications, railway transportation, electrical equipment, medical devices, industrial machinery, and low-frequency AC/DC electrical equipment requiring voltage/current regulation or adjustable load resistance.
Product Dimensions
Frequently Asked Questions
How can I place an order?
You can contact us by email about your order details, or place order online.
How can I pay?
After confirming our PI, we will request payment via T/T, Paypal, or Western Union.
What's the order procedure?
We discuss order details via email, issue a PI for confirmation, then require prepayment before production (7-15 days lead time). Before completion, we confirm shipment details and balance payment.
How do you handle defective products?
We replace defective items or credit the customer, typically in the next shipment.
How do you ensure product quality?
We conduct spot inspections during production and finished product inspections before shipment.
