1C20UL | Circuit Breaker | 20A | 1-Pole | 277V

Meet the 1C20UL—the industrial-grade circuit breaker designed for reliable overcurrent protection in 277V single-pole circuits. Identified by the UL-designated part number 1C20UL, this breaker is built for maintenance, retrofit, and replacement projects where exact specifications matter, ensuring your panels stay compliant and protected.

Key specifications

• Amperage: 20A
• Poles: 1-Pole
• Voltage: 277V
• Part number: 1C20UL

Why this breaker stands out

• Exact-match compatibility: The 1C20UL is purpose-built for 20A, single-pole, 277V circuits, reducing the guesswork when replacing worn or failed breakers in commercial and industrial panels.
• UL-designated identifier: Clear, referenceable identification (1C20UL) simplifies ordering and cross-reference, helping you avoid mismatches that can lead to downtime.
• Reliability in demanding environments: Engineered for frequent maintenance, retrofits, and replacements, this breaker adds dependable protection where high reliability is non-negotiable.

Ideal use cases

• Retrofit projects in commercial spaces with 277V single-pole circuits, such as lighting, receptacle circuits, or simple control circuits.
• Maintenance swaps to quickly restore protected circuits after a fault or wear-related nuisance tripping.
• Replacement in aging panels where a precise 20A, 1-pole, 277V protective device is required to maintain panel coordination and safety margins.

How to order with confidence

Before you order, confirm that the 1C20UL matches your panel’s fit and rating requirements. Use the part number as your primary compatibility reference to ensure seamless substitution and code-compliant protection.

Whether you’re upgrading an aging panel, replacing a failed unit, or completing a retrofit, the 1C20UL delivers straightforward, dependable overcurrent protection for 277V systems, helping you keep electrical work safe, compliant, and on schedule.