Square D ECB34015G3 - 15 A, 3-Pole Bolt-On Circuit Breaker | AmpState

The Square D ECB34015G3 is a 15A, 3-pole bolt-on molded case circuit breaker designed to deliver rugged, reliable protection in panelboards and loadcenters. Built for residential, commercial, and light industrial environments, this unit guards against overcurrent and short-circuit events, helping prevent equipment damage and downtime.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection for lasting reliability in challenging installation environments.
• Thermal-magnetic trip unit delivers stable, repeatable protection performance across temperatures and load conditions, reducing nuisance trips and ensuring predictable coordination with upstream protection.
• OEM-compatible design ensures seamless fit and compatibility with matching Square D OEM load centers and panelboards, helping maintain code compliance and system integrity.
• Three-pole configuration supports 3-phase power distribution, ideal for commercial and light industrial applications where balanced 3-phase loads are common.
• Molded-case durability protects conductors and bus bars inside the enclosure, with a robust design suited to daily electrical distribution use.
• 15-amp protection limits fault currents on branch circuits without unnecessarily interrupting routine operations.

Technical snapshot

• Manufacturer: Square D
• Part Number: ECB34015G3
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 15A
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Who is this for?

Electricians, facilities managers, and contractors who design or maintain panelboards and loadcenters for three-phase power systems will appreciate the combination of secure mounting, precise trip performance, and OEM compatibility. Whether upgrading an existing distribution panel or stocking components for a small commercial project, the ECB34015G3 offers dependable protection that aligns with Square D OEM standards.

Practical tips

• Verify your panelboard is designed for three-pole, bolt-on breakers and that the ECB34015G3’s mounting footprint matches your enclosure.
• Install by a qualified electrician and follow local electrical codes and safety practices.
• Coordinate with upstream protection to achieve selective tripping and minimize service disruption during faults.