Siemens CC1-B020 Circuit Breaker, 20A, 1-Pole, 277V

The Siemens CC1-B020 Circuit Breaker is a compact, dependable single-pole protection device designed for industrial electrical service, maintenance, and replacement projects. With a 20 A rating and 277 V operating capability, it delivers reliable overcurrent protection where space is at a premium and downtime matters.

• Part Number: CC1-B020
• Amperage: 20 A
• Poles: 1
• Voltage: 277 V
• Brand: Siemens

To ensure a proper fit, verify the part number against your panel or device specifications and confirm the application requirements. If you’re unsure whether CC1-B020 matches your installation, we can help you verify compatibility—just send a message and we’ll assist in validating fit.

Ideal for

• Electricians performing panel maintenance or upgrades in commercial and industrial settings
• Projects replacing aging or damaged breakers in Siemens-based systems
• New installations requiring a single-pole, 20 A protection device for 277 V circuits

What sets it apart

The CC1-B020 is designed for reliability and consistency in Siemens-compatible installations. Its single-pole design minimizes space while delivering precise overcurrent protection for 277 V circuits. By using the exact part number, you ensure you are sourcing a direct-fit component that aligns with your existing panels and control equipment, reducing guesswork and downtime.

Use cases and scenarios

• Replacing a failed 20 A breaker in a 277 V lighting or motor control circuit in a warehouse or manufacturing floor
• Expanding a panel while maintaining the same protection level for 277 V loads
• Maintaining uptime in critical equipment by ensuring fast, correct part replacement with the CC1-B020

Practical installation and maintenance tips

Before installation, shut off power and verify the system voltage matches 277 V. Confirm the breaker’s rating and pole count align with the circuit. Use proper safety procedures and panel labeling. Keep the exact part number handy for future replacements to ensure continued compatibility across Siemens systems.

Need help matching a part number or confirming compatibility? Our team is ready to assist with part-number checks and application guidance to keep your project on track.