General Electrics THKMA30600 - 600 A, 3-Pole Bolt-On Circuit Breaker | AmpState

Engineered for demanding electrical environments, the General Electric THKMA30600 is a 600A, 3-pole bolt-on molded-case circuit breaker designed to protect large branch circuits in panelboards and load centers. This unit combines rugged mounting with precise thermal-magnetic protection to deliver dependable performance under heat, vibration, and surge conditions.

Key benefits

• Secure bolt-on mounting: Provides a rigid, vibration-resistant bus connection that stays secure through equipment start-ups and real-world vibration, reducing the risk of loose connections over time.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection with dual-stage action—thermal for overloads and magnetic for short circuits—helping to minimize nuisance trips while safeguarding connected equipment.
• 3-pole design for 3-phase systems: Ideal for residential, commercial, and light industrial applications that require reliable protection across all three phases.
• High-current rating (600A): Suitable for protecting large feeders and main circuits without compromising response time during faults.
• OEM-compatible: Engineered to be compatible with matching GE OEM panelboards and load centers, ensuring coordinated protection and straightforward replacement.
• Easy serviceability: Bolt-on design simplifies installation and field replacement, reducing downtime during maintenance or panel upgrades.

Ideal use cases

• Upgrading or refurbishing panelboards in residential developments, commercial spaces, or light industrial facilities that require robust 3-phase protection.
• Feeding large equipment and motors from main distribution panels where high current handling is essential.
• Replacement in GE-compatible load centers where consistent trip characteristics and mounting geometry matter for system coordination.

Technical snapshot

• Manufacturer: General Electric
• Part Number: THKMA30600
• Type: Thermal-magnetic molded-case circuit breaker
• Amperage Rating: 600A
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

For installers and facility managers who demand dependable protection with straightforward installation, the THKMA30600 delivers the reliability and compatibility you need in panelboards and load centers. It’s a purpose-built solution for high-current, three-phase protection that you can trust when it matters most.