Welcome to the ASCO Website

Welcome to our website.

Choose another country or region

ASCO Model 335 Surge Protective Device

120-240VAC | 72-180kA/Phase

The ASCO Model 335 Surge Protective Device shields motor-driven appliances in residential and light commercial applications against electrical power surge damage entering through the main electrical service panel.

ASCO Model 335 Surge Protective Device
  • Features

    • UL 1449 Listed Type 2 Surge Protective Device
    • Rated for 120/240V split phase panels up to 400 Amps
    • Installation flexibility
    • LEDs and Audible Alarm


    • Internal diagnostics keep you informed
    • Reference to Ground Monitoring
    • 5 Year product warranty


    • Broadcast and Entertainment
    • Banking, Financial and Insurance
    • Telecom
    • Manufacturing
    • Healthcare
    • Government
    • Fire/Alarm/Security
    • Education
    • Data Center/Colocation/Hosting
    • Construction and Engineering

Need a technical document?

Search our download center to find drawings, manuals and data sheets for your product.

Need support?

Contact our support team for technical help and information.