Establish sccr of individual power circuit components ul 508a. The ul 508a listing mark on an industrial control panel provides evidence of third party certification to the municipal inspection authority and to the purchaser of the panel. This powerful, free database features robust and intuitive search features, advanced search and filtering options and access to ul guide information. Make sure your industrial control panels are ul 508 or nec. Underwriters laboratory implemented ul508a supplement sb to. Ul panels are third party safety approved so other third parties can easily approve them. We design, assemble, and install ul certified panels and can bring existing control panels up to ul safety standards, as well as build panels from the. Ul 508a standard pdf download gaaphakerslingbeachs blog. Ul 508a standard for industrial control panels standards catalog. Selecting the right switch for the right application.
Ul508a supplement sb4 is the approved method for determining short circuit. A new subsidiary named simply ul llc, a limited liability corporation, took over underwriters laboratories product testing and certification business. Control panel design guide according ul 508a eaton. To receive a ul 508 listing and the authorization to apply the ul 508 listing label, the equipment manufacturer must submit the equipment to ul for inspection and testing. By authority of the united states of america legally binding document by the authority vested by part 5 of the united states code 552a and part 1 of the code of regulations 51 the attached document has been duly. Ul 508 is the underwriters laboratories ul safety standard covering industrial control panels icp, and the equipment installed inside.
June 2008 ul 508 application guide make the most of your energysm. Ul is not a government supported agency nor even a nonprofit organization. Ul 508a certification description from quality controls, inc. Reprinted with permission from national electrical manufacturers association, underwriters laboratories, inc. Ul 508a industrial control panels power distribution and control. Feeder components that limit sccr available ul 508a sb4. This version of internet explorer is either no longer supported by microsoft, or is obsolete and some features of our store may no longer be supported. In the table, the molded case circuit breaker must be in category divq in order to comply with the ul 508 standard. Ul 508 is a maze of a spec to work through, with different sections that pertain to different parts of the application.
Control panel technical guide how to ensure troublefree approval of your. Ul 508a supplement sa specific component requirements ul. Ul 508a control panel design guide newark element14. Purchase copy of ul 508a electrician talk professional. They have many competitors that are also nrtls, but most of them just do the testing and listing part, they rely upon ul to write the standards that they. This standard applies to grounding and bonding equipment for use in accordance with the canadian electrical code, part i, csa c22. Find the most uptodate version of ul 508c at engineering360.
Metalworking machine tools, machines that cut or form metal. Ul 508a standard for industrial control panels standards. Providing equipment with third party safety approval is smart. For example, there is a section related to the pcbs, there is a section related to terminal spacing, wire spacing, etc. A ul 508 panel shop can independently design and produce a ul panel. Ul 508 standard for industrial control equipment standards. How to facilitate the ulcompliant approval to your control panel. Standardised typical solutions for motor circuits ul 508 part iv and ul 508a chap. Actionable insights on the topics you choose, delivered directly to your inbox. Product iq has the data you can trust whether youre verifying the ul certification of a product or component, locating ul guide information or searching for alternative products. Ul provides free access to library of safety standards.
Jun 30, 2015 the ul representative at the meeting understood their predicament and vowed to try to harmonize the ul 508 standards with the latest iec standards. Industrial control equipment ul 508 making global gains with certified product distinction. Ul 508c ul standard for safety power conversion equipment. When equipment includes a control panel, providing a ul panel is a simple low cost way to do it. They are an independent testing and standards company that must pay salaries, rent, taxes just like the rest of us. Supplement sb is the ul approved method for determining the sccr for industrial control panels based on the power circuit components within the. Ul 508a standard for industrial control panels purcell systems. Underwriters laboratory 508a overview of ul508a supplement sb ul 508a is a safety standard for industrial control panels adopted by underwriters laboratory, which is an approved method in determining sccr referenced by nec article 409. And ul, with help from industry representatives like me, has been working on doing just that for a good 10 years. Plastics machinery, including injection molding, extrusion, blow molding, specialized processing, thermoset molding and size reduction. Ul offering free online access to safety standards. Technical information nema, ul and csa standards technical information en60529ip environmental ratings 599technical section 82701 11. This document is intended to be used to determine the requirements for components when used in industrial control panels.
Ul 508a, but is by no means an exhaustive guide, and does not cover all uses and applications associated with ul 508a regulations. Ul 508a the standard ul 508a industrial machinery the following types of machines are identified as industrial machinery. Ul 508 questions codes and standards general discussion. Ul 467 ul standard for safety grounding and bonding. This document will be updated on an asneeded basis as changes occur in the use of components in panels. However, previous versions of the document may be used until ul provides notification that they are no longer in use.
Ul announced january 30 that ul certification customers in north america will have free online access to all ul safety standards beginning immediately. Always consult all pertinent actual regulatory standards and local standard representatives to ensure full compliance. Ul provides free access to library of safety standards rp news wires, noria corporation underwriters laboratories inc. This document replaces what was supplement sa in the second edition of ul 508a, and subsequently appendix c in the third edition of ul 508a. Ul standard for safety for industrial control panels, ul 508a second edition, dated december 20, 20 summary of topics this revision of ul 508a is issued to correct table sb4. Find the most uptodate version of ul 467 at engineering360. This guide is not intended to be used in lieu of ul 508a or other regulatory standards. Ul 508 type e and ul 508 type f controllers see on page 16 and 17. Our breadth, established objectivity and proven history mean we are a symbol of trust, enabling us to help provide peace of mind to all. Ul 508a industrial control panels power distribution and. These requirements cover open or enclosed equipment that supplies power to control a motor or motors operating at a frequency or voltage different than that of the input supply. Ul 508a certification is an industrial control panel directive, which is sought by electrical inspectors. Underwriters laboratories ul on january 1, 2012, underwriters laboratories transformed from a nonprofit organization to a forprofit company in the u.
Top industrial control equipment manufacturers around the world choose ul to help them in obtaining the necessary certifications for countryspecific compliance. Ul 508a supplement sb ul508a is a safety standard for industrial control panels adopted by underwriters laboratory which is an approved method in determining sccr referenced by nec article 409. The entire library of uls standards and outlines of investigations will be available through a dedicated web site at. This guide replaces neither the standards including ul 508a that electrical. Socomec ul 508 rated nonfusible disconnects from automationdirect, the best value in industrial automation low prices, fast shipping, and free awardwinning service. Technical appendix contents technical appendix materials w. Socomec ul 508 rated nonfusible disconnects circuit. Ul 508a, standard for industrial control panels intertek.
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