Cutler-Hammer JDB3175W - 150A, 3-Pole, Molded Case Circuit Breaker

Meet the Cutler-Hammer JDB3175W—a rugged, reliable molded case circuit breaker designed for the demands of modern electrical systems. With a 150A rating and a 3-pole configuration, this MCCB delivers steady, coordinated protection across three phases in panelboards, switchboards, and control panels.

• Three-phase protection ensures synchronized interruption across all lines, guarding equipment and wiring from phase faults and unbalanced loads.
• 150A current rating suits medium-to-heavy feeder circuits, motor feeds, and distribution trunks typical in industrial, commercial, and OEM deployments.
• Molded-case construction combines durable insulation with a compact footprint, making installation in tight enclosures straightforward while enhancing reliability in harsh environments.
• Versatile integration designed to fit conventional electrical enclosures used for panelboards, switchboards, and control panels, enabling flexible system design and retrofit projects.
• Industrial-grade protection ideal for motor control centers and distribution panels where dependable overcurrent protection and safe operation are critical.

In practical terms, the JDB3175W helps prevent costly downtime by automatically interrupting fault currents, protecting motors, transformers, and downstream circuits. It’s a smart choice for facilities managers, electricians, and OEMs building or upgrading electrical cabinets where uptime and safety matter.

Use cases and scenarios

For manufacturing lines with multiple three-phase motors, the JDB3175W provides coordinated protection to keep everything running smoothly. In a commercial building’s electrical room, it serves as a reliable feeder breaker for critical distribution paths. In OEM control panels, it offers a compact, rugged solution that fits tight spaces without compromising performance.

Why choose this model over alternatives

Compared to smaller or single-phase breakers, the JDB3175W delivers robust three-phase protection in a single, space-efficient unit. Its molded-case design emphasizes durability and insulation, contributing to long service life in busy electrical rooms. For applications demanding consistent protection across three phases, this breaker provides clear, dependable performance that supports predictable electrical behavior and safer shutdowns during faults.

Tips for optimal use: verify that the load and duty align with a 150A, 3-pole configuration, mount in accordance with standard enclosure practices, and reference the manufacturer’s installation guidelines for correct torque, wiring, and maintenance procedures. Regular inspections of terminal connections and enclosure integrity will help maintain reliable performance over time.

Choose the Cutler-Hammer JDB3175W when you need durable, three-phase overcurrent protection that fits into standard distribution hardware and supports demanding industrial, commercial, or OEM electrical systems.