Siemens ED21B100L - 100 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens ED21B100L — a 100A, 120V, 1-pole bolt-on molded case circuit breaker built to safeguard panelboards and load centers with precision and reliability. Designed for residential, commercial, and light industrial applications, this unit delivers sturdy protection where it matters most, keeping wiring and equipment safe from overcurrent and short-circuit events.

Why this breaker stands out

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, minimizing movement that can lead to loose contacts over time.
• Thermal-magnetic trip unit delivers stable, repeatable protection across varying loads and temperatures, reducing nuisance trips while responding quickly to true faults.
• 100A, 120V, 1-pole configuration is ideal for protecting a single branch circuit with straightforward integration into existing panelboards and load centers.
• OEM-compatible design ensures seamless compatibility with matching Siemens load centers and panelboards, simplifying upgrades and replacements.

Whether you’re upgrading a service panel, configuring a new electrical subfeed, or replacing a failed breaker, the ED21B100L combines precise protection with practical installation benefits. The molded case construction provides reliable interrupting capacity and durability in everyday electrical environments, from home garages to small commercial spaces.

Key applications and use cases

• Residential panels needing dependable branch circuit protection for high-demand circuits such as HVAC, water heaters, or major appliances.
• Commercial panels where a robust, vibration-resistant connection helps maintain long-term reliability in busy electrical rooms.
• Light industrial setups requiring quick, accurate overcurrent protection on a dedicated circuit without overcomplicating the panel design.
• Panelboard or loadcenter upgrades where OEM compatibility reduces installation time and compatibility concerns.

Technical snapshot

• Manufacturer: Siemens
• Part Number: ED21B100L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 100A
• Voltage Rating: 120V
• Number of Poles: 1
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Equip your electrical system with a dependable, industry-standard solution that pairs robust mechanical design with responsive protection. The Siemens ED21B100L is built to perform when it matters most—protecting wires, devices, and occupants by preventing damage from overloads and faults. Order this bolt-on 1-pole breaker from AmpState and integrate with confidence into your Siemens-compatible load centers and panelboards.