Square D IKL34150 150A 3-Pole 480 V Circuit Breaker Potential Transformer

Powerful protection for industrial power distribution, the Square D IKL34150 is a 150 A, 3-pole circuit breaker rated for 480 V. Built for demanding environments, this unit delivers reliable overcurrent protection across three phases while aligning with metering and protection schemes that rely on a potential transformer output. If your project runs on 480 V three-phase power, this breaker provides the robust performance you need with precise current interrupt capability.

Key advantages

• Exact 150 A current rating ensures calibrated protection for feeders and critical equipment, reducing nuisance trips and enabling coordinated protection schemes.
• Three-pole design isolates all three phases simultaneously for comprehensive fault clearance and safer shutoff in balanced and unbalanced fault conditions.
• 480 V voltage rating matches common industrial and commercial distribution systems, simplifying integration into existing panels and switchgear.
• Square D lineage leverages a proven engineering approach and compatibility with a wide range of Square D accessories, mounting options, and panel families for easier replacement or upgrade.
• Potential transformer compatibility supports sensing and metering configurations, enabling voltage monitoring and relay interfaces without extra adapters in compatible setups.

Ideal applications and use cases

Designed for three-phase environments, the IKL34150 excels in industrial facilities, data centers, manufacturing floors, and large HVAC installations where reliable protection and accurate metering signals are essential. Use it to protect feeders downstream of main distribution panels, as a protective device for machine rooms, or in any 480 V distribution where precise trip characteristics and straightforward integration with protection relays are required.

What you gain with this model

• Protection you can trust from a well-established electrical protection brand, with a current rating that matches typical branch-circuit requirements in mid to large scale deployments.
• Seamless system integration thanks to compatibility with metering and relay interfaces that rely on potential transformer outputs, enabling better power quality monitoring and fault analysis.
• Operational clarity through clear identification of three-phase protection, simplifying maintenance checks and fault diagnostics for onsite teams.

Specifications at a glance

• Part number: IKL34150
• Current rating: 150 A
• Poles: 3
• Voltage rating: 480 V

Choose the Square D IKL34150 when you need a reliable, industrial-grade 3-pole circuit breaker for 480 V systems that also supports modern metering and protection workflows. It’s a pragmatic choice for keeping critical equipment protected, while enabling clear, actionable visibility into your power distribution network.