Siemens | HE42B030 | Circuit Breaker | 30A | 2-Pole | 480V | Bolt-On

Siemens HE42B030: 30A, 2-Pole Bolt-On Circuit Breaker for 480V Systems

The Siemens HE42B030 is a purpose-built bolt-on circuit breaker designed to protect industrial power circuits at 480V. With a 30A rating and two poles, it provides synchronized disconnect and protection for both hot legs, delivering reliable overcurrent protection in demanding environments. Use this part when you need a precise, compatible replacement or retrofit that matches existing specifications.

Why this breaker stands out

• Clear compatibility reference: The part number HE42B030 is the strongest indicator for matching panels and protection schemes. If your system calls for this exact specification, this device is designed to fit.
• Bolt-On mounting: Engineered for secure attachment to compatible panels, allowing straightforward installation and robust mechanical stability in vibration-heavy industrial settings.
• Industrial-grade 480V operation: Suited for higher voltage feeders common in manufacturing, processing, and heavy machinery applications where precise current protection matters.
• Accurate ampere protection: At 30A, it safeguards circuits from overloads while supporting continuous operation of connected equipment and motors within rating limits.

Ideal use scenarios

• Maintenance or retrofit projects upgrading or replacing aged protection hardware in 480V distribution panels.
• Replacement in equipment racks, control panels, or motor control centers that require a 30-amp, 2-pole bolt-on solution.
• New installations where a reliable, easily verifiable Siemens part is preferred for consistent protection coordination.

What you should know before ordering

Notes: Confirm fit and ratings before ordering. The HE42B030 part number is the best reference for compatibility with your panel and protection scheme. If you’re matching an existing breaker, use the part number as the primary verification step to ensure seamless replacement.

Practical tips for installation and use

• Prepare the panel area and ensure the power is de-energized before handling circuit breakers.
• Verify that your panel accepts bolt-on protection devices of this style and that the bus connections align with a 2-pole 480V configuration.
• After installation, confirm secure mounting torque per your panel’s guidelines and test the electrical system to verify proper operation.

Designed for professionals who demand dependable protection without guessing games, the Siemens HE42B030 delivers precise 30-amp, 2-pole protection for 480V circuits with the trusted performance that comes from Siemens engineering. Whether you’re maintaining, retrofitting, or replacing, this part helps you keep critical electrical systems running smoothly and safely.