Siemens HED42B025 - 25 A, 480 V, 2-Pole Bolt-On Circuit Breaker | AmpState

The Siemens HED42B025 is a 25A, 480V, 2-pole bolt-on molded case circuit breaker crafted to deliver reliable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for steady performance in demanding environments, this breaker helps keep electrical systems safe, compliant, and up to code.

Why this breaker stands out

• Secure bolt‑on mounting provides a rigid, vibration‑resistant bus connection, reducing the risk of loose contacts and unexpected trips in systems with vibration, temperature swings, or heavy loads.
• Thermal‑magnetic trip unit delivers stable, repeatable protection—the thermal element handles overloads gently while the magnetic element responds instantly to high‑fault currents for fast disconnection.
• OEM‑matched compatibility is designed to work seamlessly with Siemens load centers and panelboards, helping you maintain consistency, reliability, and code compliance across installations.
• Versatile 2‑pole design for 480V systems is ideal for commercial and light industrial applications where both poles must disconnect together for safety.

Real‑world applications and use cases

Ideal for protecting individual branch circuits in residential, commercial, and light industrial panelboards and load centers, the HED42B025 is well-suited for:

• Commercial lighting and receptacle circuits in small to mid‑size facilities
• HVAC controls and motor-start circuits where reliable short‑circuit protection is essential
• Distribution feeders in panelboards that require robust, code‑compliant overcurrent protection at the 25A rating

Installation considerations

With bolt‑on mounting, ensure the breaker is seated securely onto a compatible Siemens bus assembly in a matching OEM panelboard or load center. This design is chosen to minimize movement, reduce wear over time, and provide dependable long‑term performance in environments with mechanical stress or vibration. For best results, follow all manufacturer installation instructions and have a qualified electrician perform any wiring and commissioning tasks.

Technical specifications at a glance

• Manufacturer: Siemens
• Part Number: HED42B025
• Type: Thermal‑magnetic molded case circuit breaker
• Amperage Rating: 25A
• Voltage Rating: 480V
• Number of Poles: 2
• Mounting Style: Bolt‑on
• Application: Branch circuit overcurrent and short‑circuit protection

Choose the Siemens HED42B025 when you need dependable 2‑pole protection for 480V systems that fits securely in Siemens‑compatible panelboards and load centers. Its combination of secure mounting, precise thermal‑magnetic protection, and OEM compatibility helps you build safer, more reliable electrical distributions for a wide range of commercial and light industrial applications.