Schneider Electric M9U21120 - 20A, 1-Pole, Circuit Breaker

Meet the Schneider Electric M9U21120—a precise 20A, 1-Pole circuit breaker crafted for dependable overcurrent protection across demanding electrical environments. Its compact, single-pole design slots into panelboards, switchboards, and control panels with ease, helping you protect individual circuits without crowding the enclosure.

Engineered for serious use in industrial, commercial, and OEM applications, this breaker delivers reliable performance where safe operation and continuity matter most. It’s a straightforward solution to safeguard wiring, motors, and downstream equipment from overloads, reducing downtime and extending the life of your distribution panels and motor control centers.

Why the M9U21120 stands out

• Simple, flexible 1-Pole configuration fits tightly in crowded panels while providing robust branch-circuit protection.
• 20A current rating aligns with common circuits in industrial and commercial settings, offering precise protection without nuisance tripping.
• Industrial-grade reliability from Schneider Electric, designed for continuous operation in demanding environments and OEM equipment.
• Ideal for distribution panels and motor control centers where safe, controlled shutdown and overcurrent protection are critical.
• Straightforward integration supports streamlined installation and maintenance in existing electrical infrastructures.

Key specifications

• Current rating: 20A
• Poles: 1-Pole
• Breaker type: Circuit Breaker

Use cases and scenarios

• New installations and panel upgrades in factories, warehouses, and commercial facilities where space is at a premium and reliable protection is essential.
• OEM equipment where a compact, dependable break in the power feed helps safeguard critical components without overfilling control panels.
• Distribution panels and motor control centers that require predictable performance and straightforward maintenance.

Choosing the Schneider Electric M9U21120 means investing in a trusted, purpose-built solution for overcurrent protection at the component level. It pairs with standard electrical architectures to deliver safe operation, predictable trips, and long-term reliability, helping you maintain uptime and protect assets across industrial and commercial applications.