Siemens ED21B025L - 25 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens ED21B025L — a dependable 25 A, 120 V, 1-pole bolt-on molded case circuit breaker designed to safeguard your electrical system with precision. Built for branch circuit overcurrent and short-circuit protection, this breaker slips into panelboards and load centers with secure, vibration-resistant performance that you can trust day in and day out.

Why choose the Siemens ED21B025L

• Secure bolt-on mounting delivers a rigid bus connection that resists vibration and loosening, reducing the risk of intermittent trips and electrical noise in demanding environments.
• Thermal-magnetic trip unit provides stable, repeatable protection across a range of fault conditions, helping protect wiring and devices from damage while minimizing nuisance trips.
• OEM compatibility designed to fit Siemens load centers and panelboards, ensuring a seamless replacement experience without compromising performance or safety.
• Versatile applications suitable for residential, commercial, and light industrial settings where reliable single-pole protection is essential for lighting runs, receptacle circuits, and other branch circuits.

Ideal use cases and practical scenarios

Whether you’re upgrading an older panel or stocking a replacement inventory for a service van, the ED21B025L covers common needs such as:

• Replacing a failed 1-pole breaker in existing Siemens panelboards to restore circuit protection quickly.
• Protecting single-phase branch circuits for lighting, outlets, fans, and small equipment in homes and small offices.
• Providing robust protection in light commercial installations where dependable trip performance and compact form factor matter.

Technical specifications at a glance

• Manufacturer: Siemens
• Part Number: ED21B025L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 25 A
• Voltage Rating: 120 V
• Number of Poles: 1
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

What makes this breaker stand out

In a world where reliability matters, the ED21B025L delivers a crisp, predictable response when faults occur, helping protect both wiring and connected devices. Its bolt-on design minimizes loose connections and vibration-related wear, while the thermal-magnetic mechanism creates a clear, consistent trip profile that aligns with standard electrical safety practices. If you’re building or maintaining compliant, dependable electrical systems in residential, commercial, or light industrial environments, this Siemens breaker is a smart, purpose-built choice.