Siemens HED43B100L - 100 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Siemens HED43B100L is a 100A, 480V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for rigorous commercial and light industrial environments, this device ensures your three-phase distribution stays safe, stable, and easy to maintain.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection that stays tight through equipment start-ups, heavy loads, and ongoing cycling.
• Thermal-magnetic trip unit delivers stable, repeatable protection: the thermal element handles sustained overloads while the magnetic element responds instantly to short circuits, reducing the risk of equipment damage.
• OEM compatibility is designed to slot into matching Siemens load centers and panelboards, enabling straightforward replacements and consistent protection coordination across your system.
• Three-pole, 480V protection ideal for residential, commercial, and light industrial installations that rely on robust 3-phase distribution and higher voltage applications.
• Branch circuit protection rated at 100A to safeguard feeders, downstream devices, and control circuits with reliable interruption performance when faults occur.

Practical scenarios and benefits

Use the HED43B100L to protect three-phase feeders in commercial office buildings, light manufacturing floors, or HVAC motor circuits where reliable interruption and quick fault clearing are critical. Its bolt-on design makes it a solid choice for panel upgrades or replacements in Siemens-based systems, helping maintain consistent trip curves and predictable operating behavior across the distribution network.

Technical snapshot

• Amperage rating: 100 A
• Voltage rating: 480 V
• Number of poles: 3
• Mounting style: Bolt-on
• Type: Thermal-magnetic molded case circuit breaker
• Application: Branch circuit overcurrent and short-circuit protection

Choosing the Siemens HED43B100L means investing in a durable, purpose-built protection device that harmonizes with your Siemens infrastructure, minimizes downtime, and provides precise, reliable performance across a range of commercial and light industrial applications.