

The 328 Series is a 300VAC rated, 10kA surge withstand, 6.3×32mm ceramic fuse, designed in accordance to UL248-14 Standard, provided in cartridge and axial-lead packages.
- High surge withstand capability
- – 20 hits of 10kA 8/20μs surge
- – Meets ANSI/IEEE C62.41.2, Category C-High
- – Meets US Dept of Energy (DOE) MSSLC/ CBEA street lighting and parking lot lighting, elevated level
- Small form factor (6.3×32mm) with cartridge and axial-lead package options
- Breaking capacity: 200A@300VAC, 200A@100VDC
- Lead-free, RoHS compliant, halogen-free
- Compliant with UL248- 14 and NFPA 70 (NEC) primary fusing requirements
- Operating temperature: –55°C to 125°C
328 Parts
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Part Number | Actions | Maximum AC Voltage (V) | Nominal Melting I2T (A2sec) | Resistance (Ω) | Body | MSL | Opening | Voltage Rating (V) | Minimum Operating Temperature (°C) | Max Operating Temperature (°C) | Agency Approvals |
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328 Applications
- Commercial and outdoor LED luminaries
- Outdoor electronics and electrical equipment
- Surge protection for telecom application
Series: 328 Resources

Circuit Protection Selection Guide
Consult this guide to learn about circuit protection considerations and the solutions Littelfuse offers. Tables help match products with applications.