Eaton ND312T32W - 1200 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Eaton ND312T32W is a rugged, high-capacity bolt-on molded case circuit breaker designed to safeguard panelboards and loadcenters in demanding environments. At 1200 A and 600 V, this 3-pole device delivers dependable overcurrent and short-circuit protection where it matters most, from large residential subpanels to light industrial distributions. Its secure bolt-on mounting creates a rigid, vibration-resistant bus connection, ensuring consistent protection even in vibration-prone settings.

Why this breaker stands out

• Secure bolt-on mounting provides a rigid connection to the bus, reducing movement and ensuring reliable protection under vibration or load fluctuations.
• Thermal-magnetic trip unit delivers stable, repeatable protection by responding predictably to both overloads and sudden fault currents.
• High-current capability at 1200 A makes it ideal for feeders and branch circuits in heavier-duty panels.
• 600 V rating supports a wide range of commercial and light industrial applications while maintaining safety margins for surge and fault conditions.
• OEM compatibility is engineered to pair with matching Eaton and OEM panelboards and loadcenters, simplifying installation and maintenance.

Ideal use cases

• Residential subpanels that feed high-demand circuits, such as electric heating or large HVAC units.
• Commercial panelboards supporting office complexes, retail spaces, or service equipment with elevated current requirements.
• Light industrial distribution where dependable protection for feeders and machinery is essential.
• Retrofits or replacements in OEM-installed systems that require a bolt-on, three-pole solution.

How it protects your system

The ND312T32W is designed to intercept dangerous conditions before they impact equipment or personnel. When a circuit draws an overload current, the thermal element heats and trips to interrupt the circuit at a safe threshold. In the event of a high-magnitude fault, the magnetic element activates the trip mechanism almost instantaneously, isolating the fault and limiting damage. This combination provides both ignition-avoidance for everyday overloads and rapid fault isolation for severe short circuits.

Technical specifications

• Manufacturer: Eaton
• Part Number: ND312T32W
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 1200 A
• Voltage rating: 600 V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Designed for reliability in panelboards and loadcenters, the Eaton ND312T32W (1192000-series style) delivers a precise balance of high current capability, secure installation, and OEM compatibility. Whether you’re upgrading existing infrastructure or outfitting a new, higher-demand installation, this 3-pole bolt-on breaker provides the performance and durability engineers rely on for long-term protection.