Siemens | HE43B025 | Circuit Breaker | 25A | 3-Pole | 480V | Bolt-On

Meet the Siemens HE43B025 circuit breaker — a rugged 25A, 3-pole protection device designed for demanding 480V three-phase power systems. This bolt-on model is tailored for maintenance, retrofit, and replacement projects where precise compatibility and reliable overcurrent protection are essential, keeping critical equipment online with minimal downtime.

• Amperage: 25A
• Poles: 3-Pole
• Voltage: 480V
• Mounting: Bolt-On
• Part Number: HE43B025
• Type: Circuit Breaker

Why this 25A, 3-Pole 480V bolt-on breaker stands out

• Three-phase protection: The 3-pole design interrupts all phases simultaneously, safeguarding motors, drives, and other 480V equipment from overcurrent conditions.
• Secure bolt-on mounting: Built for panels and enclosures that require a robust, field-serviceable mounting solution, reducing vibration-related wear and ensuring dependable operation in demanding environments.
• Exact compatibility with Siemens inventories: The HE43B025 reference aligns with specific panel configurations, streamlining part replacement and minimizing guesswork during repairs.
• Clear identification for maintenance: The part number HE43B025 provides a definitive match for retrofit and stock-keeping, helping technicians source the correct component quickly.

Ideal use cases

• Replacing a worn or failed breaker in 480V three-phase distribution panels
• Retrofits and upgrades where 25A protection is required for balanced three-phase loads
• Maintenance planning for industrial facilities, manufacturing lines, and process equipment that rely on reliable Siemens protection

Compatibility & ordering guidance

To ensure a correct fit, verify that your equipment requires a 25A, 3-Pole, 480V bolt-on circuit breaker. The part number HE43B025 is the most reliable reference for compatibility—use it when checking schematics, panel catalogs, or supplier listings. If in doubt, cross-reference with your existing Siemens breaker family to confirm mounting style and electrical ratings align with your panel.

Installation considerations and best practices

• Prioritize safety: disconnect power and follow all local electrical codes and manufacturer guidelines during installation or replacement.
• Check alignment: ensure the breaker aligns properly with bus bars and mounting points to prevent uneven contact or mounting strain.
• Torque and conductors: secure connections according to panel specifications and use appropriately rated conductors for 480V systems.