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ABB TEYH3045BST12 - Circuit Breaker 45A 3-Pole 35kA

United Fuses
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ABB TEYH3045BST12 is a 45 amp, 3-pole bolt-on circuit breaker from the TEY / Q-Line series, designed for overcurrent protection in lighting panel and electrical distribution applications. It operates at 480/277V AC with a 35 kA interrupting rating and features a TEYH molded case frame with a LI (long-time and instantaneous) trip unit for fixed protection settings. The breaker supports reverse feed, accommodates wire sizes from #10 to #4 copper or aluminum, and is rated for continuous current. It is UL listed under file number E11592, ensuring compliance with industry safety standards. This unit is suitable for use in commercial and industrial power distribution systems requiring reliable branch circuit protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Amperage: 45 A
  • Poles: 3
  • System Voltage: 480/277 Vac
  • Interrupting Rating: 35 KA
  • Frame Type: TEYH
  • Trip Function: LI (Long Instantaneous)
  • Mounting Type: Bolt-On
  • Wire Range: #10-#4 Cu/Al
  • Suitable for Reverse Feed: Yes
  • Continuous Current Rated: Standard
  • UL File Number: E11592
  • Weight: 5.19 lb