Square D EGB34100SA - 100 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Introducing the Square D EGB34100SA — a 100 A, 480 V, 3-pole bolt-on molded case circuit breaker engineered to protect your most critical electrical loads. Built for dependable branch circuit overcurrent and short-circuit protection, this unit is a precise fit for panelboards and loadcenters that demand robust, reliable performance in demanding environments.

Why this breaker stands out

• Secure bolt-on mounting delivers a rigid, vibration-resistant bus connection, helping maintain consistent electrical performance even in installations with equipment vibrations or dynamic loads.
• Thermal-magnetic trip unit provides stable, repeatable protection. The thermal element responds to gradual overloads, while the magnetic element rapidly interromps in the event of a short circuit, reducing nuisance trips and protecting downstream equipment.
• OEM-compatible design matches exactly with matching Square D OEM loadcenters and panelboards, simplifying integration and orientation within your existing electrical ecosystem.
• 3-pole, 100 A at 480 V capability supports three-phase circuits common in commercial and light industrial installations, as well as select higher-demand residential setups that require 480 V service.
• Versatility across applications designed for residential, commercial, and light industrial environments, making it a reliable choice for a wide range of 3-phase protection needs.

Use cases and ideal applications

• New or retrofit installations in commercial spaces that utilize 480 V 3-phase distributions, such as offices, retail spaces with heavy mechanical equipment, and data rooms.
• Upgrades or replacements in panelboards/load centers that require a secure bolt-on solution for enduring mechanical stress and vibration.
• Protection for motors, pumps, compressors, and other three-phase equipment commonly found in light industrial settings.
• Resilient protection in HVAC systems and other critical mechanical systems where reliable trip performance matters.

Technical snapshot

• Manufacturer: Square D
• Part number: EGB34100SA
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 100 A
• Voltage rating: 480 V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical considerations and best practices

To get the most from the Square D EGB34100SA, pair it with compatible OEM loadcenters and panelboards designed for bolt-on molded case breakers. This alignment ensures reliable bus connections, consistent protection, and straightforward installation for three-phase 480 V systems. If you’re upgrading existing infrastructure, confirm panel compatibility with the EGB family and plan around a controlled power-down procedure to maintain safety and minimize downtime.

In short, the Square D EGB34100SA delivers sturdy, predictable protection for 3-phase 480 V circuits, combining secure mounting, durable protection, and OEM compatibility into a single, dependable solution for commercial and light industrial electrical architectures.