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Siemens E21B100 - Molded Case 100A 1-Pole Breaker (120V)

Siemens
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The Siemens E21B100 is a single-pole, 100A molded case circuit breaker from the E Series, designed for thermal-magnetic overcurrent protection in industrial and commercial power distribution systems. It operates at 120V with a 10kA interrupting capacity at 120VAC and provides LI (Long-Time and Instantaneous) trip functions for reliable fault clearance. This bolt-on breaker weighs 4 lb and features a compact, single-phase construction suitable for panelboard installations. It complies with industry standards for molded case circuit breakers, ensuring dependable performance in branch circuit protection applications. Typical uses include protecting feeders, lighting panels, and motor control centers in light industrial and commercial environments.

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic, Bolt-On
  • Voltage Rating: 120V AC
  • Current Rating: 100A
  • Poles: 1
  • AIC Rating: 10kA@120V
  • Phase: 1
  • Functions: LI - Long-Time and Instantaneous
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • Weight: 4 lb
  • Family: E Series
  • Type: E


Product Identification
  • Manufacturer: Siemens
  • Item Subcategory: Molded Case