Siemens HED43B110L - 110 A, 480 V, 3-Pole Circuit Breaker | AmpState

Siemens HED43B110L is a 110A, 480V, 3-pole molded case circuit breaker designed to guard panelboards and loadcenters from overcurrent and short circuits. This compact device is built to tackle demanding branch circuits in residential, commercial, and light industrial environments, delivering reliable protection where it’s needed most.

• Compact molded-case design: maximizes usable panel space and simplifies installation in tight enclosures.
• Thermal-magnetic trip unit: provides stable, repeatable protection by coordinating overload detection with fast short-circuit interruption for consistent performance across temperatures.
• OEM compatibility: designed to pair with matching Siemens loadcenters and panelboards for a seamless fit and coordinated protection.
• Three-pole design for 480V systems: ideal for three-phase circuits; suitable for residential, commercial, and light industrial applications such as motor loads, HVAC equipment, and power distribution panels.

Technical specifications at a glance:

• Manufacturer: Siemens
• Part Number: HED43B110L
• Type: Thermal-magnetic molded case circuit breaker (MCCB)
• Amperage Rating: 110 A
• Voltage Rating: 480 V
• Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Why choose the Siemens HED43B110L? It combines a space-efficient form factor with dependable protection characteristics and straightforward compatibility with Siemens panelboards. For electricians upgrading or outfitting 480V three-phase systems in light commercial and residential settings, this 3-pole MCCB delivers reliable protection where it matters most, helping ensure safe, continuous operation of critical electrical equipment.