Siemens ED21B035 - 35 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens ED21B035 — a 35A, 120V, 1-pole bolt-on molded case circuit breaker built to deliver dependable branch circuit protection in panelboards and load centers. Designed for residential, commercial, and light industrial environments, this breaker blends robust construction with precise, repeatable protection so you can trust your electrical system to stay safe and uninterrupted.

What sets the ED21B035 apart

• Secure bolt-on mounting for a rigid, vibration-resistant bus connection that minimizes looseness and maintains consistent electrical contact.
• Thermal-magnetic trip unit delivers stable, repeatable protection by responding to both overload and short-circuit conditions, helping prevent nuisance trips without compromising safety.
• OEM-compatible design engineered to pair with matching Siemens or OEM load centers and panelboards, ensuring a seamless, reliable fit in existing electrical infrastructure.
• Versatile applications ideal for residential panels, small commercial installations, and light industrial circuits where dependable overcurrent and short-circuit protection is essential.

Technical snapshot

• Part Number: ED21B035
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 35A
• Voltage Rating: 120V
• Number of Poles: 1
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Why you’ll value this breaker in your system

In panelboard installations where vibrations or power fluctuations are a concern, the ED21B035’s bolt-on mount helps maintain a solid connection, reducing resistance changes over time. The integrated thermal-magnetic protection provides fast, predictable tripping behavior — fast enough to interrupt dangerous faults, yet measured enough to avoid unnecessary interruptions during brief overloads. Paired with compatible load centers, this breaker helps keep electrical rooms organized and maintenance-friendly.

Practical use cases

• In existing Siemens or OEM load centers within homes, apartments, or small office spaces that require a dedicated 35A circuit for equipment or high-draw loads.
• Retrofits in conveyor, lighting, or receptacle circuits in light commercial environments where reliable protection is critical.
• New installations in panelboards designed for bolt-on molded case breakers, offering a durable solution with straightforward installation.

Installation and compatibility tips

Choose the ED21B035 when you need a secure, vibration-resistant connection and dependable protection for a single 35A branch circuit. Ensure your panelboard or load center is designed for bolt-on breakers and compatible with Siemens ED-series devices to maintain warranty and performance. For best results, follow standard electrical practices: verify ratings match your circuit requirements, inspect the bus connections for cleanliness, and torque mounting hardware to manufacturer specifications.

With the Siemens ED21B035, you’re selecting a trusted, purpose-built solution for reliable branch circuit protection that aligns with your panel’s design and your project’s safety goals.