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Isolation Terminal Blocks

Bulletin 1492 Isolation IEC Spring-Clamp Terminal Blocks

Bulletin 1492 Isolation Terminal Blocks provide an easier and more convenient means of opening a circuit without rewiring.


  • Screwless termination technology
  • Helps reduce wiring time by more than 50%
  • Requires only a flat-head screwdriver for installation
  • Maintenance-free, no need to retighten
  • Secure contact is durable under extreme conditions
  • Wide range of accessories available


  • 1492 IEC Spring-clamp Isolation Terminal Blocks


  • UR, CSA, IEC-UL Recognized

Certifications apply when product is marked. See our Product Certification site for Declarations of Conformity, certificates and other certification details.

Frequently Viewed Publications

Terminal Blocks and Power Distribution Terminal Blocks Brochure1492-BR018
Screw Type and Spring-clamp IEC & NEMA Terminal Blocks Product Profile1492-PP019
More IEC Terminal Block publications in Literature LibraryAll Languages

Product Catalog

Find catalog numbers, certifications, and specifications.


See our Product Certification site for Declarations of Conformity, certificates and other certification details.

Can’t Find What You Need?

Browse our Literature Library where you can search for additional publications in more languages. You can also use the Advanced Search feature to search by catalog number, publication type, title, or keywords to narrow your results.

Build This Catalog Number

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Configuration & Selection Tools

  • CrossWorks — Convert competitive catalog numbers to similar Allen-Bradley® products.
  • eCADWorks — Select product 3D-CAD drawings in AutoCAD®.
  • ProposalWorks — Build complete quotes and proposals.
  • Rail Builder — Design DIN rail systems.

Other Resources

  • Knowledgebase — Visit our online resource for technical information, support chat and forums, software updates, and product safety advisories/notices.


We offer a variety of accessories for your IEC Spring-clamp Isolation Terminal Blocks, including:

  • DIN rail receptacles
  • End anchors and end retainers
  • End barriers
  • Jumpers
  • Marking solutions
  • Mounting rails
  • Partition plates and separation plates
  • Test plugs, sockets, and adapters

View all IEC Spring-clamp Isolation Terminal Block accessories