Siemens ED21B050L - 50 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens ED21B050L, a dependable 50A, 120V, 1-pole bolt-on molded case circuit breaker from AmpState. Designed for robust branch circuit overcurrent and short-circuit protection, it fits seamlessly into panelboards and load centers to keep electrical systems safe and reliable.

Key advantages that matter in real-world install and use

• Bolt-on mounting provides a rigid, vibration-resistant bus connection that stays secure through bumper-to-bumper electrical distribution environments—minimizing loose connections and intermittent trips.
• Thermal-magnetic trip unit delivers stable, repeatable protection for both overloads and short circuits, helping to reduce nuisance trips while quickly clearing faults.
• OEM-compatible design works with matching Siemens OEM load centers and panelboards, streamlining replacement and upgrades without compatibility concerns.
• Versatile application suited for residential, commercial, and light industrial installations where reliable single-pole protection at 120V is required.

Why this matters for your electrical protection plan

The ED21B050L is purpose-built to guard individual branches against damaging current surges. In everyday use, it protects lighting circuits, receptacle runs, and small equipment circuits, while offering fast fault clearing in the event of a short circuit. Its molded-case construction provides durable performance in service panels and subpanels, helping meet code compliance and peace of mind for ongoing operation.

Technical snapshot

• Manufacturer: Siemens
• Part number: ED21B050L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 50A
• Voltage rating: 120V
• Number of poles: 1
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

With its precise trip characteristics and secure installation, the Siemens ED21B050L is a practical, long-lasting choice for any panelboard or loadcenter that demands reliable 120V protection without sacrificing ease of service or compatibility.