Supplementary Protectors

Bulletin 1492-SPM Supplementary Protectors are used to protect equipment in applications. They are current-limiting and feature dual terminals for wiring and bus bar flexibility. With a 40 ˚C (104 °F) calibration temperature, these protectors are suitable for extreme ambient conditions.

Popular Resources/Quicklinks
Circuit Breaker Protection for Automation Systems Brochure Miniature Circuit Breaker Selection Guide Miniature Circuit Breaker Migration Guide


  • Includes 0.5…63 A circuit breakers
  • Available in 1(+N)-pole, 2-pole, and 3(+N)-pole versions
  • Includes B, C, and D trip curves
  • Ambient conditions with operating range of -25…55 °C (-13...131 °F)
Additional Information

Our circuit and load protection products are part of the Allen-Bradley® Industrial Control Components where you get the right components, at the right price, right when you need them.

Product Selection


  • CCC Certified
  • CE Marked
  • CSA Certified ⋆
  • DNV GL Type Approval
  • RoHS Compliant
  • UL Recognized ⋆ 
  • VDE Certified

   ⋆  1+N and 3+N devices are not UL recognized or CSA certified.

Looking for Additional Information?

To find additional product information including CAD drawing files, 3D models and more use our Product Catalog.


Resource Publication Number Language
Circuit Breaker Protection for Automation Systems Brochure 140G-BR001
Miniature Circuit Breaker Selection Guide 1492-SG122
Miniature Circuit Breaker Migration Guide 1489-QR001
Circuit Breaker Accessory Layout Diagram 1492-RM002
Circuit Protection Methods 1492-WP001
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