Ceramic Disc Rheostat 50W Variable Resistor
The BC-1 wire wound resistor features high resolution capability with a wide resistance range. 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; Insulation voltage: 2500V
- 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
- Control shaft rotation: 5,000 cycles within ≥90% travel
- High temperature test: 40°C for 6 weeks (6 days), 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 a round ceramic skeleton with Kanthal copper or nickel chromium wire as resistance material, coated with high-temperature enamel and bonded to the ceramic chassis. The sliding grip and brush mechanism provides variable resistance values.
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°,30min,85°,30min △R<+3%R,R1>500MΩ |
| Insulation resistance |
≥100mΩ(500Vdc) |
Humidity |
40±2°,RH:95%-98% 48h△R≤±3%R,R12100MΩ |
| Maximum heating temperature |
350℃ |
Load endurance |
R≤1KQ,5000 cycles R≤1KQ, 1000 cycles△R≤±5%R |
| Mechanical travel |
300°±10° |
Shock resistance |
60~100 times/min, 150m/s2,4000 times |
Applications
Suitable for telecommunications, transportation railways, electrical equipment, medical devices, industrial equipment, and low-frequency AC/DC electrical equipment for voltage/current regulation or adjustable load resistance.
Product Dimensions
Frequently Asked Questions
Q1: How can I place an order?
A: You can contact us by email about your order details, or place order online.
Q2: How can I pay you?
A: After you confirm our PI, we will request payment via T/T, Paypal, or Western Union.
Q3: What's the order procedure?
A: First we discuss order and production details by email. Then we issue a PI for your confirmation. Prepayment or deposit is required before production begins. Production typically takes 7-15 days for items not in stock. Before completion, we'll contact you for shipment details and balance payment. After payment settlement, we prepare shipment.
Q4: How do you handle defective products?
A: We provide replacements for defective items, either through credit or in the next shipment.
Q5: How do you check goods during production?
A: We conduct spot inspections and finished product inspections at each production stage.
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