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Square D EJB36040 - 3-Pole Molded Case Breaker 40A 600V

Square D
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Square D EJB36040 is a three-pole molded case circuit breaker designed to provide reliable overcurrent and short-circuit protection for three-phase electrical systems. It features a 40A current rating and a 600V voltage rating, housed within a compact, bolt-on unit measuring 143.76 mm H x 74.68 mm W x 102.87 mm D and weighing 3.62 lb. The breaker utilizes a thermal-magnetic trip mechanism for long-time and instantaneous (LI) protection, is certified to cULus standards, and is rated for an interrupting capacity of 65kA at 480V. It is engineered for installation in NF panelboards, accommodating wire sizes from AWG 14 to 2/0 copper or AWG 12 to 2/0 aluminum, making it suitable for a range of commercial and light industrial power distribution applications.

Key Features & Specifications
  • Type: EJB Series, Three-Pole Molded Case Circuit Breaker with Bolt-On Connection
  • Voltage Rating: 600V AC
  • Current Rating: 40A
  • Dimensions: 143.76 mm H x 74.68 mm W x 102.87 mm D (5.66 in x 2.94 in x 4.05 in)
  • Standards: cULus Certified
  • Applications: Three-Phase Power Distribution in NF Panelboards
  • Switch Type: Circuit Breaker
  • Configuration: Fixed
  • Phase: 3
  • Amperage: 40A
  • AIC Rating: 65kA @ 480V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long-Time and Instantaneous (LI)
  • Panel Type: NF Panelboard
  • Breaker Type: Molded Case
  • Temp Rating: 40 °C (104 °F)
  • Wire Size: AWG 14...AWG 2/0 Copper; AWG 12...AWG 2/0 Aluminum
  • Certification: cULus
  • Weight: 3.62 lb


Product Identification
  • UPC: 785901406709
  • GTIN: 00785901406709