Square D Main Lug Circuit Breaker Panel 12219851720140001 208Y/120VAC 100A Max

Power distribution that’s ready when you are. The Square D Main Lug Circuit Breaker Panel, model 12219851720140001, is engineered for dependable 208Y/120 VAC service with a 100 A maximum. Built to thrive in industrial, commercial, and demanding residential settings, this panel is a trusted option for upgrades, retrofits, and maintenance work where consistent performance matters.

As a Main Lug panel, it offers practical flexibility when an upstream main disconnect is already in place or when the design requires a panel without an internal main breaker. This makes it especially well-suited for retrofit projects, service replacements, and new feeder installations where reliability and quick commissioning are critical.

Key specifications

• Amperage rating: 100 A
• Voltage rating: 208Y/120 VAC
• Model: 12219851720140001
• Configuration: Main Lug style (no built-in main breaker)

Why electricians choose this panel

• Rugged, field-proven Square D design that aligns with existing Square D components for streamlined maintenance and part stocking.
• Retrofit-ready for upgrading aging installations or adding distribution capability without redesigning the enclosure or feeder runs.
• Versatile for service crews and MRO teams: ideal as a spare on vehicles, in warehouses, or on job sites where dependable, ready-to-install panels are needed fast.

Ideal use cases

• Panel upgrades in commercial spaces where 208Y/120 VAC distribution is required
• Maintenance replacements or service calls needing a reliable Main Lug panel
• New feeder installations in existing electrical rooms or industrial facilities
• Stocking spare panels for panel builders and MRO fleets to reduce downtime

Practical setup tips

Before installation, confirm the upstream main disconnect rating matches the 100 A capacity and that the enclosure supports a Main Lug configuration. Plan feeders and branch circuits with 208Y/120 VAC in mind to optimize conductor sizing and breaker coordination. This panel pairs well with standard Square D accessories and component families, helping you maintain consistency across your distribution system.

Choose the Square D Main Lug Circuit Breaker Panel when you need a reliable, retrofit-friendly distribution solution that keeps critical facilities powered with minimal hassle. Model 12219851720140001 is built for professionals who value performance, compatibility, and practical, field-ready design.