Allen-Bradley Allen-Bradley Home

Miniature Circuit Breakers

Bulletin 1492-SP Supplementary Protector Miniature Circuit Breakers

Bulletin 1492-SP Energy Limiting Supplementary Protector/Miniature Circuit Breakers protect equipment, systems, and cables by means of a quick disconnection. Select from 1-pole, 1-pole plus neutral, 2-, 3-, and 3-pole plus neutral units. Our 1- and 2-pole AC units also have limited DC ratings. Our 2- and 3-pole units are connected at the handle for simultaneous operation.

Features

  • Energy limiting design protects downstream components during short circuits
  • Field-mountable options for selective applications
  • True IP2X finger-safe design (front)
  • Ratings to 480Y/277V AC @ 240/415V AC — 10,000 A interrupt rating
  • AC and DC voltage ratings in one convenient device
  • Trip-free mechanism (breaker operation cannot be defeated by holding the handle in the ON position)
  • Three trip curves: B, C, and D
  • Time delay (D characteristic) for high inrush currents during inductive start-ups
  • Superior shock and vibration resistance capabilities help prevent nuisance tripping

Products

  • 1492-SP Miniature Circuit Breakers

Certifications

  • UL Recognized, CSA Certified, CE Marked, Germanischer Lloyd (Marine)

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

Download Adobe Reader

Frequently Viewed Publications

Product Catalog

Find catalog numbers, certifications, and specifications.

Certifications

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

Build or verify a catalog number, and get information and CAD drawings for these products.

Configuration & Selection Tools

  • CrossWorks — Convert competitive catalog numbers to similar Allen-Bradley® products.
  • eCADWorks — Select product 3D-CAD drawings in AutoCAD®.
  • Integrated Architecture Tools — Tools to help you plan and configure an Integrated Architecture™ system.
  • ProposalWorks — Build complete quotes and proposals.

Other Resources

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

Accessories

We offer a variety of accessories for your 1492-SP Miniature Circuit Breakers, including:

  • Auxiliary contacts
  • Bus bars
  • End anchors
  • Lockout attachments
  • Mounting rails
  • Shunt trips and undervoltage releases

View all 1492-SP Miniature Circuit Breaker accessories

Applications

Bulletin 1492-SP Energy Limiting Supplementary Protector/Miniature Circuit Breakers protect a wide variety of products, including:

  • Solenoids
  • Test equipment
  • Controller I/O points
  • Relay and contractor coils
  • Computers
  • Transformers
  • Automotive systems
  • Power supplies
  • Medical equipment
  • Control instrumentation

Customer Success

  • Case Studies — View our case studies site to discover how customers have applied Allen-Bradley® products in their applications.