Square D ME836LS 800A 3-Pole 600 V Circuit Breaker Potential Transformer

Meet the Square D ME836LS 800A 3-Pole 600 V Circuit Breaker Potential Transformer—a high-capacity protection solution built for demanding three-phase power systems. Designed to interrupt faults quickly while delivering precise electrical monitoring, this device combines robust protection with integrated sensing to streamline your protection and metering workflow.

Key capabilities that set the ME836LS apart include:

• 800 A current rating for dependable protection of large feeders, motors, and heavy-load circuits.
• 3-Pole design provides balanced protection across all three phases, ensuring coordinated tripping and system stability.
• 600 V maximum system voltage tailored to common industrial distribution environments, enabling reliable operation within typical plant electrical architectures.
• Integrated potential transformer for straightforward secondary-side monitoring, metering, and protection coordination with upstream relays—reducing wiring complexity and panel space.
• Industrial-grade build from Square D, crafted to endure the rigors of active switchgear environments while integrating smoothly into existing protection ecosystems.
• Versatile application compatibility ideal as a main breaker in switchgear, service entrances, or large-diameter feeders where clear visibility into both protection and measurement is valuable.

Practical use cases illustrate its value: in a three-phase distribution room, the ME836LS serves as a primary defense for high-current feeders while providing immediate metering signals for load analysis and fault diagnosis. In retrofit projects, it simplifies protection schemes by combining interruption capability with a built-in sensing path, reducing installation footprint and wiring complexity without sacrificing performance.

Why choose this model? It’s not just about cutting power when faults occur; it’s about enhancing situational awareness across your electrical system. The integrated potential transformer enables timely, accurate data to protection relays and metering systems, helping you diagnose issues faster, coordinate protections more precisely, and maintain safer, more reliable operation under heavy load conditions.

Installation and integration tip: verify that your system voltage aligns with the 600 V rating, ensure correct three-phase alignment, and follow the manufacturer’s guidelines for mounting and wiring to maximize performance and safety. If you’re building or upgrading a 3-phase, high-current distribution network, the Square D ME836LS offers a compelling blend of protective power and measurement capability in a single, cohesive unit.