Tripp Lite – ULTRABLOK428 –

2 outlets/direct plug-in design
1410 joule ratingmore joules mean more protection!
Black all-metal housing with diagnostic LEDs
Isolated filter banks remove damaging line noise
$10,000 Insurance for connected equipment (U.S., Canada, and Puerto Rico only)
Lifetime warranty


For more than 20 years, America’s leading companies have trusted Tripp Lite’s Isobar Premium surge and noise suppressors to protect sensitive computer, networking and telecom equipment. With more than 18 million satisfied customers, the ISOBAR remains the world’s #1 selling premium surge suppressor. Loaded with a generous combination of high-quality components, near indestructible all-metal case and unique noise filtration system, Isobars offer the highest levels of protection. Robust surge suppression circuits with sine wave tracking offer extreme levels of protection against the heaviest surge conditions. Isobar’s unique protection system combines large torroidal chokes, HF/VHF capacitors and multiple metal oxide varistors that remove high-level surges and EMI/RFI interference. The ULTRABLOK offers 2 outlets arranged with standard wall socket spacing in a cordless direct plug-in format. Mounting tabs allow permanent connection via duplex switch plate screw. Surge suppression rated at 1410 joules/48,000 amps offers high-grade protection. Diagnostic LEDs confirm power availability, line fault and protection status. $10,000 Ultimate Lifetime connected equipment Insurance (U.S., Canada, and Puerto Rico only). PLUG/OUTLETS: Input – NEMA 5-15P; Output – 2 NEMA5-15R ELECTRICAL: 120V AC, 50/60Hz, 15A (Requires NEMA 5-15R wall receptacle) SUPPRESSION: AC: 140V RMS Clamping/1410 joules/48,000 amps FORMAT: Direct plug-in, receptacle mount form factor