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Siemens ED21B040 - Molded Case Circuit Breaker 40A 1P

Siemens
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Siemens ED21B040 is a molded case circuit breaker designed for providing reliable overcurrent protection in single-phase electrical systems. It features a 40A current rating and a 120V AC voltage rating, housed within a compact 125A/ED frame. The breaker utilizes a thermal-magnetic trip unit for both long-time and instantaneous protection, is constructed with load side lugs for panelboard installation, and operates within a temperature range of -25 to 70 °C. It complies with UL standards and carries an HACR rating for heating, air conditioning, and refrigeration equipment. Typical applications include integration into Siemens SB switchboards and Sentron panelboards for commercial and light industrial power distribution.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Standard, Thermal Magnetic Protection
  • Voltage Rating: 120V AC
  • Current Rating: 40A
  • Frame Size: 125A/ED
  • Poles: 1
  • AIC Rating: 10kA @ 120V
  • Connection: Lug In Panelboard, Load Side Lug
  • Wire Size: AWG 10 to AWG 4, Copper or Aluminum
  • MCM Size: Minimum 12 AWG (Al) / 14 AWG (Cu), Maximum 10 AWG
  • Phase: 1, Phase Connection: Any
  • Functions: LI (Long-Time and Instantaneous Trip)
  • Panel Type: SB Switchboards, Sentron Panelboards
  • Breaker Type: Standard
  • Temp Rating: -25 to 70 °C (-13 to 158 °F)
  • Standards: HACR Rated, UL Listed
  • Weight: 1.1 lb
  • Family: Sentron Series
  • Country of Origin: Mexico


Product Identification
  • UPC: 783643208759
  • GTIN: 00783643208759