The LITTELFUSE 229P/230P Slo-Blo fuses are designed for reliable overcurrent protection in a compact size. Available in axial lead and cartridge configurations, these fuses offer excellent performance characteristics, including the ability to withstand high current, short-duration pulses. They are widely used in telecom equipment and general-purpose applications, meeting the demanding requirements of UL 1459 and Telcordia GR-1089-CORE standards. The indicating Slo-Blo fuse variant provides a visual indication of an open circuit, simplifying troubleshooting and improving system reliability.
Ampere Opening Rating Time: 100% 4 hours, Minimum 135% 1 hour, Maximum 200% 3 seconds, Minimum 20 seconds, Maximum
Agency Approvals: Listed by Underwriters Laboratories and Certified by CSA through 3.5 amperes. Recognized under the Components Program of Underwriters Laboratories from 4 through 7 amperes. 1 through 7 amperes approved by METI.
Agency File Numbers: UL E10480, CSA LR 29862
Interrupting Ratings (0.25–3.5A): 10,000 amperes at 125VAC
Interrupting Ratings (4–7A): 400 amperes at 125VAC
Interrupting Ratings (0.25–1A): 35 amperes at 250VAC
Interrupting Ratings (1.25–3.5A): 100 amperes at 250VAC
Packaging Options (230P Series): Tape and Reel per EIA-296 (add DRTIP suffix for 1500 pieces per reel)