GE SGDA32AT0400 - 400 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the GE SGDA32AT0400, a powerhouse in 400 A, 240 V, 3-pole protection engineered for reliable branch circuit safety in panelboards and load centers. This bolt-on molded case circuit breaker is built to stand up to demanding environments while delivering precise protection where it matters most.

Why this breaker stands out

• Secure bolt-on mounting – a rigid, vibration-resistant bus connection that stays tight under demanding electrical and mechanical conditions, reducing the risk of loose connections over time.
• Thermal-magnetic trip unit – combines overcurrent and short-circuit protection with stable, repeatable performance across a range of loads and temperatures.
• 3-pole, 400 A at 240 V – ideal for three-phase distribution in panelboards and load centers, providing robust protection for larger feeders and critical circuits.
• OEM compatibility – designed to be compatible with matching GE OEM load centers and panelboards, simplifying replacement and upgrade projects without unnecessary redesigns.
• Versatile applications – suitable for residential, commercial, and light industrial settings where dependable branch circuit protection is essential.

What you get with the SGDA32AT0400

• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 400 A
• Voltage rating: 240 V
• Poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical use cases and scenarios

- Upgrading or replacing a failing breaker in large residential service feeders or commercial load centers to restore reliable protection at higher current levels.

- Installing in panelboards where vibration is a concern, leveraging the bolt-on mounting to maintain a secure electrical connection.

- Deploying in light industrial panels that demand robust, repeatable protection against overloads and short circuits on 240 V systems.

Installation and maintenance tips

• Ensure the panelboard or load center is designed for GE SGDA series bolt-on breakers to maintain optimal compatibility and trip performance.
• Verify adherence to local electrical codes and standards during installation, and follow GE’s guidelines for torque and mounting to preserve the integrity of the bus connection.
• Schedule periodic inspections of connections and note any signs of wear, corrosion, or vibration that could affect long-term reliability.

What problems this solves

The SGDA32AT0400 delivers dependable protection for high-current circuits, mitigating the risk of damage from overload and short circuits. Its bolt-on design minimizes movement-induced loosening, while the thermal-magnetic trip unit provides precise responses to fault conditions, helping protect wiring, equipment, and connected loads in demanding environments.

Technical snapshot

• GE
• Part Number: SGDA32AT0400
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 400 A
• Voltage Rating: 240 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

With its combination of rugged bolt-on hardware, reliable thermal-magnetic protection, and OEM compatibility, the GE SGDA32AT0400 is a strategic choice for engineers and electricians who value safety, durability, and straightforward maintenance in high-current panel installations.