LITTELFUSE 229P/230P Slo-Blo fuses are designed to provide reliable overcurrent protection in a compact size. These fuses combine conventional overcurrent protection with the ability to withstand high current, short duration pulses, making them suitable for demanding applications in the telecom industry and beyond. Available in cartridge or axial lead configurations, they offer versatility for various circuit designs. The indicating Slo-Blo fuse variant provides a visual indication of an open circuit, simplifying troubleshooting and maintenance.
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)
Packaging Options (229P and 230P Series): Bulk packaging (add MXP suffix for 1000 pieces)
Operating Temperature: –55°C to 125°C
Shock: MIL-STD-202, Method 213, Test Condition I (100 G’s peak for 6 milliseconds)
Vibration: MIL-STD-202, Method 201 (10–55 Hz, 0.06 inches total excursion)
Salt Spray: MIL-STD-202 Method 101, Test Condition B (48 hours)
Insulation Resistance: MIL-STD-202, Method 302, Test Condition B