Siemens HED42B030L - 30 A, 480 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens HED42B030L — a 30A, 480V, 2-pole bolt-on molded case circuit breaker built to safeguard your panelboards and loadcenters with dependable overcurrent and short-circuit protection. This is not a generic breaker; it’s a purpose-built solution designed to maintain protective integrity in demanding electrical environments.

Why the HED42B030L Stands Out

• Secure bolt-on mounting: Delivers a rigid, vibration-resistant bus connection that stays put through equipment cycling and busy electrical rooms, reducing nuisance trips and connection loosening.
• Thermal-magnetic trip unit: Combines precise thermal sensing with rapid magnetic response for stable, repeatable protection across a wide temperature range and varying loads.
• OEM-compatible construction: Engineered to align with Siemens loadcenters and panelboards, ensuring a seamless fit and consistent protective behavior when replacing or upgrading breakers.
• Broad application range: Ideal for residential, commercial, and light industrial circuits needing reliable 30-amp protection up to 480 volts.

Technical Snapshot

• Manufacturer: Siemens
• Part Number: HED42B030L
• Type: Thermal-magnetic molded case circuit breaker (MCCB)
• Amperage Rating: 30A
• Voltage Rating: 480V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Applications: Branch circuit overcurrent and short-circuit protection

Practical Use Cases

• Upgrading service panels in multi-family buildings where reliable, secure breaker mounting is essential for long-term performance.
• Replacing aging or failed breakers in commercial office panels to restore safe, consistent protection.
• Protecting motor and HVAC circuits in light industrial settings where vibration resistance and stable trip characteristics matter.

Installation and Compatibility You Can Trust

The HED42B030L is designed for bolt-on installation in Siemens OEM load centers and panelboards, delivering a precise mechanical footprint and trip characteristics that align with the rest of the system. Its robust mounting and dependable thermal-magnetic protection help you maintain safe operation, even in demanding environments.

What This Means for You

If you’re building, upgrading, or maintaining a panel that requires solid branch-circuit protection at 30A and up to 480V, the Siemens HED42B030L offers a targeted, high-reliability solution. It’s a smart choice for technicians who value predictable protection, easy field replacement, and compatibility with Siemens’ own panel assemblies.