ASCO Offers Versatile Surge Protector Ideal for Control Panels and Point-Of-Use Applications

EIN NP ASCO 400series 400

Jully 11, 2019

ASCO Power Technologies offers its Model 420 surge protective device for point-of -use applications. This device is especially suited for use in commercial facilities, in industrial control panels, and in traffic and transportation applications. The Model 420 mitigates transient overvoltages using individually fused Thermally Protected Metal Oxide Varistors (TPMOV). Its features are detailed in the product overview video, webpage, and brochure.

“A temporary overvoltage can activate SPD components without opening an overcurrent protection device,” states ASCO Product Manager, Bob Behl. “The TPMOV protects against thermal runaway, preventing damage by subsequent transients.” The Model 420 product brochure details the associated technology and specifications.

Three mounting options include a standard ¾”-14 nipple, DIN-Rail, or a Bracket Mount for flat surfaces. The unit features an LED that indicates whether the SPD is working. The LED can be viewed from a variety of angles to accommodate all mounting options.

The Model 420 is rated for 50kA per phase, and is available for 120 to 600-volt applications. It is also available at 100kA per phase for 120 and 277-volt systems. It comes with a standard 10-year warranty, and meets the performance and safety standards established by the 4th Edition of UL 1449. It meets UL 96A Lightning Protection Master Label requirements and those of ANSI/IEEE C62.41.1-2002, C62.41.2-2002, C62.45-2002, C62.62-2010 and C62.72-2016. It is RoHS compliant and ISO 17025:2005 Certified.

Go HERE for more information 

Related Articles


Latest Articles

  • Lever Connectors and Twist-Ons: How to Decide Which is Right for the Job

    Lever Connectors and Twist-Ons: How to Decide Which is Right for the Job

    There are many different types of wire connectors, and sometimes it can be hard for electricians to determine which one is best to use. Read More…

  • Winnipeg Information Bulletin: Low-Risk Voice, Data, Video & Security System Installations

    Winnipeg Information Bulletin: Low-Risk Voice, Data, Video & Security System Installations

    September 17, 2026 Certain types of installations may qualify for a low-risk voice, data, video (VDV) and security system electrical permit. For information related to regular VDV/security system installations, see winnipeg.ca/vdvsystems. Applications must be submitted through Permits Online. Electrical permits and inspections are needed for certain installations of security and similar alarm systems. This makes… Read More…

  • What Type of Outdoor Light Do I Need for My Application?

    What Type of Outdoor Light Do I Need for My Application?

    September 17, 2026 By Stanpro The right outdoor light starts with the space you need to illuminate and how that space is used. For commercial projects, parking lots and large exterior areas point toward area lights; entrances and building perimeters toward wall-mounted or security lighting; signs, facades and targeted areas toward flood lights; pathways toward… Read More…

  • Alberta Employers and Tradespeople Share their Perspectives

    Alberta Employers and Tradespeople Share their Perspectives

    September 16, 2026 In Alberta’s skilled trades labour market employers and tradespeople are facing growing pressure from tariffs, rising costs, hiring challenges and labour mobility barriers. CAF-FCA’s new report, Hiring, Mobility and Needed Supports: Alberta Employers and Tradespeople Share Their Perspectives, takes a closer look at what’s happening on the ground. Based on surveys of… Read More…


Changing Scene

  • Federal Government Invests in Rural Transit Projects for Communities Across British Columbia

    Federal Government Invests in Rural Transit Projects for Communities Across British Columbia

    October 1, 2026 Rural and remote communities in British Columbia, including the Village of Pemberton, will receive a boost for transit projects following an investment of more than $10.6 million from the federal government. These projects were announced by Patrick Weiler, Member of Parliament for West Vancouver–Sunshine Coast–Sea to Sky Country, who was accompanied by… Read More…

  • Manitoba Sees Strong Growth in Apprenticeship Training and Certification

    Manitoba Sees Strong Growth in Apprenticeship Training and Certification

    October 1, 2026 The Manitoba government is highlighting significant progress in apprenticeship training and certification, reinforcing its commitment to building a skilled and inclusive workforce, Business, Mining, Trade and Job Creation Minister Jamie Moses, Advanced Education and Training Minister Renée Cable and Public Service Delivery Minister Mintu Sandhu announced today. “We certified more journeypersons this… Read More…

  • New PEI Online Registry Helps Tradespeople Work Across Canada

    New PEI Online Registry Helps Tradespeople Work Across Canada

    September 1, 2026 The Government of Prince Edward Island has launched an online registry of skilled tradespeople that makes it easier for employers to verify credentials and supports labour mobility across the country. The online registry will help employers, contractors and homeowners verify whether a person holds a Prince Edward Island Certificate of Qualification or Red… Read More…

  • Bell AI Fabric Provides Construction Update in Saskatchewan

    Bell AI Fabric Provides Construction Update in Saskatchewan

    October 1, 2026 More than 500 people are working on the 300 MW data centre site in the Rural Municipality (RM) of Sherwood, with all four building shells taking shape and more than 30 local firms supporting the project. Bell Canada and the Government of Saskatchewan marked major construction milestones at the 300-megawatt Bell AI… Read More…