

487 series is the first fast-acting fuse with both AC and DC rating from the Littelfuse 5X20mm fuse family. This fast-acting ceramic body fuse provides over-current protection for telecom power supplies and datacenter server power supplies where a high-voltage DC interrupting rating is required.
- Lower I2t and faster tripping
- High-current ratings up to 16A in a 5X20mm footprint
- 420V AC rating
- 420V DC rating
487 Parts
Filters
Showing 1 to 12 of 19 Total Results
Part Number | Actions | Maximum AC Voltage (V) | Nominal Melting I2T (A2sec) | Resistance (Ω) | Opening | Operating Temperature | Agency Approvals |
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Part Number | Actions | Maximum AC Voltage (V) | Nominal Melting I2T (A2sec) | Resistance (Ω) | Opening | Operating Temperature | Agency Approvals | |
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487 Applications
- Telecom Power Supplies
- Datacenter Server Power Supplies
- Intelligent commercial buildings
- High-energy and power efficient applications (3-phase power supplies, inverters, and ballasts)
Series: 487 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.