ABB | S503-K26
Miniature Circuit Breaker, 3 Pole, 600Y/277 V AC, Tripping characteristic K (26A @ 20 deg C)

MFR PART #  S503-K26
PART #  489823
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The S500 high perfomance circuit breaker fullfils the requirement of larger short-circuit currents, thus in turn placing heavy demands on protective sitchgear reagrding safety, reliability and switching capacities.


The S500 high performance MCB offers a compact solution to circuit protection. The S500 devices are UL tested current limiting and DIN rail mounted. The S500 is available with application-specific trip characteristics to provide maximum circuit protection.


  • High breaking capacity
  • Fast breaking time (2.3 - 2.5 ms)
  • Adjustable trip unit
  • DIN rail mounting
  • Finger safe terminals
  • Multi-functional terminals
  • Wide range of accessories
  • UL 1077 recognized 600 V AC and 600 V DC versions
  • UL1077 AC adjustable K
  • UC adjustable B, K
  • UL File # E167556
  • IEC #E60497-2


Rating IP20
UNSPSC Code 39121601

Spec Sheet

Spec Sheet

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