

450Vdc/500Vac rated, 5×20mm, Time-Lag, surge withstand, ceramic body, cartridge fuse.
- Designed to International (IEC) Standards for use globally
- Follow the IEC 60127-2, Sheet 5 specification for Time-Lag Fuses
- Available in Cartridge and Axial lead Form
- Rohs compliant and Pb-free
977 Parts
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Showing 1 to 11 of 11 Total Results
Part Number | Actions | Voltage Rating (V) | Maximum AC Voltage (V) | Nominal Melting I2T (A2sec) | Resistance (Ω) | Body | Opening | Operating Temperature | Agency Approvals |
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Part Number | Actions | Voltage Rating (V) | Maximum AC Voltage (V) | Nominal Melting I2T (A2sec) | Resistance (Ω) | Body | Opening | Operating Temperature | Agency Approvals | |
---|---|---|---|---|---|---|---|---|---|---|
450 | 500 | 0.3 | 0.945 | Ceramic | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / Semko / CE / UKCA | |||
450 | 500 | 0.8 | 0.417 | Ceramic | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / CE / Semko / UKCA | |||
450 | 500 | 58 | 0.0275 | Ceramic | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / METI / UKCA / Semko / CE | |||
450 | 500 | 188 | 0.0091 | Ceramic | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / METI / Semko / UKCA / CE | |||
450 | 500 | 17 | 0.0445 | Ceramic | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / METI / Semko / UKCA / CE | |||
450 | 500 | 124 | 0.0184 | Ceramic | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / METI / Semko / UKCA / CE | |||
450 | 500 | 91 | 0.0119 | Ceramic | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / METI / UKCA / Semko / CE | |||
450 | 500 | 233 | 0.008 | Ceramic | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / METI / Semko / UKCA / CE | |||
450 | 500 | 249 | 0.0072 | Ceramic | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / METI | |||
450 | 500 | 388 | 0.0058 | Ceramic | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / METI | |||
450 | 500 | 725 | 0.0039 | Ceramic | Slo-Blo/Time Lag (T)/Time Delay | -55° to 125°C | cURus / METI |
977 Applications
- Inverter in LCD backlight unit, DC side of air-conditioners, 3-phase power supplies, Higher Energy and Power Efficient applications.
Series: 977 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.