Products
Double‑end Ceramic Bead for Fuse
Classification
Thermostat Ceramics Series
Keyword
Details Introduction
Double-end ceramic beads are key supporting components of fuses and are critical to the safe and stable operation of circuits.
I. Structure & Material Advantages
- Material: High-purity alumina ceramic, closed at both ends, with a hollow tubular structure.
- Advantages:
- Good insulation, high voltage resistance, and prevention of arc leakage.
- High temperature resistance, no deformation or short circuit during fuse blowing.
- Excellent thermal stability, stable structure and reliable contact under high and low temperatures.
- Suitable for wide-temperature and harsh environments such as automotive electronics.
II. Typical Applications
- Industrial Equipment: CNC machines, inverters, etc., with shock resistance and anti-interference performance.
- Automotive Electronics: ECU, on-board chargers, new energy battery management systems, with vibration resistance and wide-temperature operation.
- New Energy: Photovoltaic and energy storage systems, with surge resistance, high reliability, and extended equipment service life.
III. Five Core Selection Parameters
- Rated Current: Select 1.25–1.5 times the working current, considering temperature derating.
- Breaking Capacity: Meet the maximum short-circuit current requirement of the circuit.
- Time-Current Characteristic: Choose time-delay type (T-type) for impact loads such as motors.
- Dimensional Matching: Appropriate inner and outer diameter tolerances to ensure good contact.
- Safety Certifications: Comply with CCC, UL, CE, etc., according to market requirements.
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