Square D

Square D EGB34040SA E-Frame Molded Case Circuit Breaker – 3 Pole – 40A – Bolt-On – Thermal Magnetic – 120VAC Shunt Trip

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SKU: EGB34040SA GTIN/UPC: 785901285182
$1,310.85
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The Square D EGB34040SA is a molded case circuit breaker designed for advanced control and protection in commercial and industrial power distribution systems. Manufactured by Schneider Electric, this 3-pole, 40A E-Frame breaker delivers reliable thermal-magnetic protection for branch and feeder circuits in three-phase applications.

This model features a factory-installed 120VAC shunt trip, enabling remote tripping through external control signals for emergency shutdown, automation, or safety interlocking. Designed for NF panelboards, it mounts securely using a bolt-on connection and is also suitable as a replacement for legacy EJB34040SA breakers in upgrade applications.

With a high interrupting rating of 35kA at 480Y/277VAC (and up to 65kA at lower voltages), the EGB34040SA provides strong fault protection performance in demanding environments. A Visi-Trip indicator allows fast visual identification of tripped conditions, improving troubleshooting efficiency and system uptime.

Specifications

  • Brand: Square D
  • Manufacturer: Schneider Electric
  • Part Number: EGB34040SA
  • Series: EGB Series
  • Type: Molded Case Circuit Breaker (E-Frame)
  • Configuration: 3 Pole
  • Phase: 3 Phase
  • Current Rating: 40A
  • Voltage Rating: 120VAC, 240VAC, 480Y/277VAC
  • Mounting Style: Bolt-On
  • Connection Type: Lug Terminal
  • Protection Type: Thermal Magnetic
  • Trip Function: LI – Long-Time and Instantaneous
  • Trip Adjustability: Fixed Thermal, Fixed Magnetic
  • Application: NF Panelboard / HVAC / Control Systems

Interrupting Ratings

  • 65kA @ 120VAC
  • 65kA @ 240VAC
  • 35kA @ 480Y/277VAC

Electrical & Mechanical Features

  • Factory-installed 120VAC shunt trip for remote control
  • Bolt-on NF panelboard mounting system
  • Thermal-magnetic overload and short-circuit protection
  • Fixed trip characteristics for consistent performance
  • Visi-Trip visual fault indicator
  • HACR rated for HVAC applications
  • Suitable for retrofit replacement of EJB34040SA
  • Operating temperature range: -25°C to 70°C
  • Designed for industrial and commercial upgrade projects

Wire Range

  • Copper: AWG 14–2/0
  • Aluminum: AWG 12–2/0
  • Maximum wire size: 2/0 AWG
  • Minimum wire size: AWG 14 Copper / AWG 12 Aluminum

Accessories

  • Factory-installed 120VAC shunt trip
  • Auxiliary switch option
  • Alarm switch option
  • Padlock attachment option

Standards & Approvals

  • UL 489 Listed
  • CSA C22.2 No. 5
  • NFPA 70 Compliant
  • NEMA AB 1 Compliant
  • CSA Approved
  • cULus Listed
  • HACR Rated
  • HID Rated
  • NOM Approved
  • Authentic Square D / Schneider Electric product
  • Designed for NF Panelboard systems
  • Type Thermal Magnetic
  • Vendor Square D
  • Brand Square D

Returns are easy

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

FREE Shipping on orders over $149.

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.