GE TJD432400 - 400 A, 240 V, 3-Pole Circuit Breaker | AmpState

Meet the GE TJD432400, a robust 400 A, 240 V, 3-pole molded case circuit breaker engineered to deliver reliable overcurrent and short-circuit protection for panelboards and loadcenters. Built to slot into GE-compatible assemblies, this breaker provides a precise, repeatable protection profile that professionals trust in residential, commercial, and light industrial installations.

Why this GE 3-Pole Breaker stands out

• Compact molded case design preserves valuable panel space while delivering full current protection, making it ideal for tight electrical enclosures and modern panel layouts.
• Thermal-magnetic trip unit offers stable, repeatable protection by automatically adjusting to real-time heat and magnetic conditions, reducing nuisance trips and ensuring fast response to genuine faults.
• 3-pole configuration provides balanced, coordinated protection across all three phases, essential for safe operation of 3-phase equipment and motors.
• High amperage capability at 400 A supports large feeders, main service entries, and substantial branch circuits without compromising protection accuracy.
• Broad compatibility designed to be compatible with matching OEM loadcenters and panelboards, ensuring smooth installation and reliable electrical coordination with existing gear.
• Versatile applications suitable for residential, commercial, and light industrial environments, covering a wide range of protection needs from HVAC and pumps to lighting and general power distribution.

Applications and practical use cases

Whether you’re upgrading an aging panel or wiring a new installation, the GE TJD432400 shines in scenarios that demand solid protection for high-capacity circuits:

• Subpanels and main distribution panels in multi-occupancy buildings where large feeders require dependable 400 A protection.
• Commercial electrical rooms with significant motor loads, such as pumps, fans, and HVAC equipment, where fast, reliable trip performance is critical.
• Industrial-light circuits in warehouses or manufacturing spaces where space efficiency and robust protection are preferred in a compact MCCB footprint.
• Retrofits or replacements in existing GE or OEM panelboards that require exact-fit, compatible breakers to maintain electrical coordination and code-compliant protection.

Technical snapshot

• Manufacturer: GE
• Part Number: TJD432400
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 400 A
• Voltage Rating: 240 V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

What you gain with this breaker

Choosing the GE TJD432400 translates to fewer interruptions and more predictable electrical performance. The combination of a compact form factor and a reliable thermal-magnetic trip mechanism means you can rely on consistent protection across varying load conditions. Its compatibility with OEM panelboards reduces installation friction, while its high current rating supports demanding circuits without sacrificing safety or coordination.

Installation and care tips

To ensure optimal performance, install the GE TJD432400 in panels and loadcenters designed for this form factor and trip technology. Verify that the panelboard’s rating and bus compatibility align with the 3-pole, 240 V, 400 A specifications. Routine inspections should confirm clean terminals and secure connections, which help maintain dependable protection over the breaker’s service life.

Designed for professionals who demand precision, reliability, and seamless integration into GE-compatible systems, the GE TJD432400 is a dependable choice for safeguarding large circuits in a variety of building environments.