GE TJJ436125 - 125 A, 600 V, 3-Pole Circuit Breaker | AmpState

GE TJJ436125 is a 125 A, 600 V, 3-pole molded case circuit breaker designed to safeguard branch circuits in panelboards and load centers. Featuring a compact profile and a thermal-magnetic trip unit, this breaker delivers stable, repeatable protection against both overloads and short-circuit events across a range of environments—from home electrical panels to commercial and light-industrial installations.

• Compact molded case design minimizes required panel space, enabling tidy, efficient installations in crowded electrical enclosures.
• Thermal-magnetic trip unit provides coordinated, dependable protection with fast response to short circuits and stable performance across temperature variations.
• OEM-compatible integration designed to pair with matching GE OEM load centers and panelboards for seamless retrofits and upgrades.
• Versatile applications ideal for residential panels, small-to-mid-size commercial panels, and light industrial distribution needs.

Technical specifications

• Manufacturer: GE
• Part Number: TJJ436125
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 125 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Why this 3-pole MCCB stands out

Unlike standard single-pole devices, the 3-pole configuration provides coordinated protection across all phases, which is essential for three-phase equipment and multi-wire branch circuits. The molded case design not only tightens installation space but also supports reliable, long-term performance in busy service environments. The combination of a thermal element and magnetic trip ensures predictable behavior under varying fault currents, reducing nuisance trips and helping technicians diagnose issues faster.

Use cases and ideal users

• Residential subpanels where space is at a premium and reliable overload/short-circuit protection is required.
• Commercial storefronts, offices, and light retail spaces with three-phase equipment or multi-wire branch circuits.
• Light industrial panels that demand durable protection for distribution circuits without sacrificing panel real estate.
• Electrical contractors performing replacements or upgrades in GE-compatible panelboards or load centers.

Practical tips for installation and lifecycle

• Verify compatibility with your GE OEM load centers and panelboards to ensure a smooth fit and reliable operation.
• Match the circuit load to the 125 A rating to balance protection with practicality for ongoing service.
• During installation, secure connections per the enclosure’s guidelines and label the circuit clearly for future service checks.
• Use this breaker as a component of a well-documented protection scheme in residential, commercial, or light industrial panels to simplify future maintenance and inspections.