Square D

Square D EJB34020SA Molded Case Circuit Breaker – 3 Pole – 20A – Bolt-On – Thermal Magnetic – 120VAC Shunt Trip

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SKU: EJB34020SA GTIN/UPC: 785901648536
$1,369.09
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The Square D EJB34020SA is a high-interrupting capacity molded case circuit breaker designed for commercial and industrial power distribution systems requiring remote tripping capability. Manufactured by Schneider Electric, this 3-pole, 20A E-Frame breaker combines dependable thermal-magnetic protection with a factory-installed 120VAC shunt trip for enhanced control and safety.

The integrated shunt trip allows remote opening of the breaker from external control circuits, making it ideal for emergency shutdown systems, safety interlocks, fire alarm interfaces, and building automation applications. Designed for secure bolt-on installation, the EJB34020SA mounts directly into Square D NF panelboards and utilizes standard lug terminals for reliable conductor connections.

With interrupting ratings of 100kA at 120VAC and 240VAC, and 65kA at 480Y/277VAC, this breaker delivers exceptional fault-clearing performance for demanding electrical environments. A Visi-Trip visual indicator provides rapid identification of tripped circuits, reducing troubleshooting time and simplifying maintenance.

Specifications

  • Brand: Square D
  • Manufacturer: Schneider Electric
  • Part Number: EJB34020SA
  • Series: EJB Series
  • Type: Molded Case Circuit Breaker (E-Frame)
  • Configuration: 3 Pole
  • Phase: 3 Phase
  • Current Rating: 20A
  • Voltage Rating: 120VAC, 240VAC, 480Y/277VAC
  • Mounting Style: Bolt-On
  • Terminal Type: Lugs
  • Protection Type: Thermal Magnetic
  • Trip Function: LI – Long-Time and Instantaneous
  • Trip Adjustability: Fixed
  • Application: NF Panelboards

Interrupting Ratings

  • 100kA @ 120VAC
  • 100kA @ 240VAC
  • 65kA @ 480Y/277VAC

Electrical & Mechanical Features

  • Factory-installed 120VAC shunt trip for remote circuit operation
  • Thermal-magnetic overload and short-circuit protection
  • Long-time and instantaneous trip functions
  • Fixed trip characteristics for reliable performance
  • Bolt-on mounting for NF panelboards
  • Visi-Trip visual trip indicator
  • Suitable for emergency shutdown and automation systems
  • HACR rated for HVAC applications
  • HID rated for lighting applications
  • High interrupting capacity for demanding installations

Wire Range

  • Copper: AWG 14–6
  • Aluminum: AWG 12–6
  • Maximum wire size: 6 AWG
  • Minimum wire size: AWG 14 Copper / AWG 12 Aluminum

Available Options

  • Auxiliary Switch
  • Alarm Switch
  • Padlock Attachment

Accessories

  • Factory-installed 120VAC Shunt Trip

Standards & Approvals

  • UL 489 Listed
  • CSA C22.2 No. 5
  • NEMA AB 1 Compliant
  • NFPA 70 Compliant
  • CSA Approved
  • cULus Listed
  • HACR Rated
  • HID Rated
  • NOM Approved
  • UL Listed
  • Authentic Square D / Schneider Electric product
  • Manufactured to EJB Series specifications for NF panelboard applications

Operating Conditions

  • Ambient Temperature Rating: 40°C
  • Designed for commercial and industrial electrical distribution systems
  • Ideal for emergency shutdown, safety interlock, and remote-control applications
  • Type Thermal Magnetic
  • Vendor Square D
  • Brand Square D

Returns are easy

You may return items within 30 days of delivery for a refund.

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My Circuit Breakers offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).

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My Circuit Breakers provides a comprehensive 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer). Extended warranties are available upon request.