Eaton KD3100Y - 100 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Eaton KD3100Y is a 3-pole, 100 A, 600 V bolt-on molded case circuit breaker designed to deliver dependable branch-circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built for rugged installations, it combines a secure bolt-on mounting with a thermal-magnetic trip unit to provide stable, repeatable protection across varying temperatures and loads.

Why the Eaton KD3100Y Stands Out

• Secure bolt-on mounting—a rigid connection to the bus minimizes vibration-induced wear and ensures consistent electrical performance in challenging environments.
• Thermal-magnetic protection—the trip mechanism responds reliably to both overload and fault conditions, delivering predictable protection without nuisance trips.
• OEM-compatible design—specifically engineered to be compatible with matching OEM load centers and panelboards for straightforward replacement and upgrades.
• Versatile applications—suitable for residential, commercial, and light industrial settings where robust three-phase protection is required.

Ideal Use Scenarios

• Upgrading or retrofitting existing panelboards and loadcenters that require reliable 3-pole protection in 3-phase circuits.
• New installations in commercial spaces or light industrial environments where space is at a premium and vibration resistance matters.
• Systems demanding consistent protection across a range of operating temperatures and load conditions to minimize downtime.

Technical Specifications at a Glance

• Manufacturer: Eaton
• Part Number: KD3100Y
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 100 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection in panelboards and loadcenters

What This Means for You

Choosing the KD3100Y means investing in a dependable, long-lasting protection solution that aligns with your existing panel infrastructure. The bolt-on design simplifies installation and reduces vibration-related issues, while the thermal-magnetic trip unit provides clear, decisive interruption during faults and stable operation during normal use. It’s an excellent match for electricians and facilities teams looking for a proven, OEM-compatible breaker that fits seamlessly into residential-adjacent commercial and light industrial electrical rooms.