Siemens HED43B030 - 30 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens HED43B030 is a 30A, 480V, 3-pole bolt-on molded case circuit breaker purpose-built to protect your distribution system. Engineered for dependable branch circuit overcurrent and short-circuit protection, it fits seamlessly into panelboards and loadcenters that rely on Siemens’ matched engineering for consistent performance.

Secure bolt-on mounting for a rugged, vibration-resistant connection

The bolt-on mounting style delivers a firm, vibration-resistant bus connection, helping maintain reliable electrical continuity in environments where equipment may experience movement or vibration. This means fewer loose connections and steadier protection over time.

Thermal-magnetic trip unit for stable, repeatable protection

Equipped with a thermal-magnetic trip mechanism, this breaker provides coordinated protection against both overloads and short circuits. The thermal element handles gradual heating, while the magnetic element provides instantaneous response to high-current faults, delivering precise protection without nuisance trips.

Designed to work within Siemens OEM ecosystems

Compatible with matching OEM loadcenters and panelboards, the HED43B030 ensures consistent trip characteristics and a clean, unified protection scheme across your electrical distribution. This compatibility minimizes installation guesswork and maximizes reliability.

Ideal applications and use cases

Specifically suited for residential, commercial, and light industrial settings that require robust 30A protection on three-phase 480V systems. Use it to safeguard feeders, equipment circuits, or motor-driven loads in compact to mid-size facilities, where dependable protection and quick fault isolation are essential.

Key specifications at a glance

• Manufacturer: Siemens
• Part number: HED43B030
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 30A
• Voltage rating: 480V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

With Siemens HED43B030, you’re choosing a solution built to deliver consistent protection, durable performance, and straightforward compatibility across your three-phase, high-voltage distribution needs. It’s a purposeful choice for professionals who value precise protection, reliable operation, and a clean, integrated electrical system.