Tripp Lite IS-250
250W Isolation Transformer

OUR PART #  IS-250

Our Price: $131.67
List Price: $178.20
You save 26%! (Low Price Guarantee)
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Tripp Lite Isolator series isolation transformer-based power conditioners offer complete line isolation, continuous noise filtering and enhanced normal and common mode surge suppression. Internal low-impedance isolation transformer component with Faraday Shield offers 100% isolation from the input AC line. Secondary neutral to ground bonding eliminates common mode noise, providing an isolated ground reference for sensitive equipment and an inexpensive alternative to the installation of dedicated circuits and site electrical upgrades. Removes EMI/RFI noise, utility switching transients, background spikes generated by other on-site loads and utility or lightning related surge conditions. Additional surge suppression components placed at both the line input and transformer output combined with full line isolation offers continuous line filtering of a full range of power line noise in all modes. Continuous transformer filtering with no wearable parts uniquely reduces surges in the worst of power environments to harmless levels. Reduces 6000V IEEE C62.41 Cat A&B ring wave and combination wave test surges to only 0.5V common mode. Model IS250 offers 250 watts capacity with 2 widely spaced output receptacles, a 6-ft power cord, circuit breaker overload protection and lighted power switch. Rugged all-metal unit housing ships ready for upright tower or wallmount placement in industrial, medical, office or network environment.


  • Complete line isolation, noise filtering and surge suppression is ideal for sensitive equipment
  • 250 watts, 2 outlets, 6-ft. power cord
  • Compliant with the Federal Trade Agreements Act (TAA) for GSA Schedule purchases


  • Plug/Outlets: Input: NEMA 5-15P/Output: 2 NEMA5-15R
  • Electrical: 120V AC, 60Hz, 2.1A, (Requires NEMA5-15R wall receptacle)
  • Format: Upright tower with keyhole flanges for wall mount placement
  • Isolation: Transformer based line isolation with Faraday shield
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