Siemens ED21B100 - 100 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Siemens ED21B100 is a 100 A, 120 V, 1-pole bolt-on molded case circuit breaker engineered to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. From residential panels to light commercial setups, this breaker is built to keep electrical systems safe and running smoothly.

• Bolt-on mounting provides a rigid, vibration-resistant bus connection, helping prevent loose connections and arcing in environments with movement or vibration.
• Thermal-magnetic trip unit delivers stable, repeatable protection by simultaneously sensing overloads (thermal) and short circuits (magnetic), reducing nuisance trips and improving overall reliability.
• OEM-compatible design is crafted to pair with matching Siemens load centers and panelboards, ensuring precise fit, coordinated trip performance, and easier installation.
• 100 A, 120 V, 1-Pole capacity makes it ideal for protecting sizable branch circuits in homes, small offices, and light industrial environments where high-current protection is required.
• Molded case construction offers durability in standard panels and a compact profile that fits typical installation spaces without compromising protection.

Use cases span panel replacements, panel upgrades, and new installations where reliable branch-circuit protection is essential. Electricians and property managers will appreciate the precise Siemens alignment with OEM equipment, helping ensure proper coordination with other protective devices and a straightforward, code-compliant installation.

Technical specifications

• Amperage Rating: 100 A
• Voltage Rating: 120 V
• Number of Poles: 1
• Mounting Style: Bolt-on
• Type: Thermal-magnetic molded case circuit breaker
• Manufacturer: Siemens
• Part Number: ED21B100
• Application: Branch circuit overcurrent and short-circuit protection