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Cutler Hammer WMZS1B20 - Molded Case Circuit Breaker 20A 480V

Cutler Hammer
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Cutler Hammer WMZS1B20 is a 1-pole molded case circuit breaker from the WMZS Series, designed to provide thermal magnetic protection for branch circuits. It is rated for 20A at 480V AC with a 10kA interrupting capacity at 277/480V, utilizing LI (Long-Time and Instantaneous) trip functions for overcurrent and short-circuit protection. This compact unit features a feed-thru connection, weighs 0.2 lb, and is constructed for single-phase applications. It is certified to UL 1077, CSA C22.2 No. 235, and IEC 60947-2, with CE marking and RoHS compliance, making it suitable for industrial control panels and equipment protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic, LI (Long-Time and Instantaneous)
  • Voltage Rating: 480V AC
  • Current Rating: 20A
  • Poles: 1
  • AIC Rating: 10kA@277/480V
  • Phase: 1
  • Connection: Feed-Thru
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Weight: 0.2 lb
  • Country of Origin: Spain
  • Certification: UL 1077; CSA Std. C22.2 No. 235; IEC 60947-2; CE Marked; RoHS Compliant
  • Applications: Industrial control panels, equipment protection, branch circuit protection


Product Identification
  • UPC: 78668525849
  • GTIN: 00786685258492