Siemens ED43B110 - 110 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Engineered for dependable branch circuit protection, the Siemens ED43B110 is a 110A, 480V, 3-pole bolt-on molded case circuit breaker designed to guard panelboards and load centers from overcurrent and short circuits. This unit delivers a stable, repeatable protection profile that aligns with Siemens OEM systems, ensuring seamless integration across installations.

Key advantages

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, reducing movement and wear in demanding environments.
• Thermal-magnetic trip unit combines temperature-based overload protection with a fast magnetic trip for instantaneous short-circuit interruption, helping you avoid cascading failures.
• OEM-compatible design is engineered to work with matching Siemens OEM load centers and panelboards, simplifying upgrades and replacements.
• Three-pole, 480V configuration ideal for 3-phase electrical systems found in residential, commercial, and light industrial settings.

Technical specifications

• Manufacturer: Siemens
• Part Number: ED43B110
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 110A
• Voltage Rating: 480V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use scenarios

• Upgrading or expanding panelboards in light commercial spaces where 3-phase 480V power is standard.
• Replacing aging or failed breakers in Siemens-compatible OEM panels to restore reliable protection.
• Protecting critical circuits in office buildings, retail environments, data/telecom rooms, and light manufacturing facilities.

Compatibility and installation considerations

Designed for seamless integration, the ED43B110 is compatible with matching OEM load centers and panelboards. Its bolt-on mounting supports a secure, long-lasting connection, minimizing vibration-related wear in installations subject to movement or temperature cycling. When planning replacements or upgrades, verify that your enclosure supports 3-pole 480V molded case breakers and that the ED43B110’s amperage rating aligns with the protected circuit's requirements.

Why this matters

Choosing the Siemens ED43B110 means: - Clear protection for critical loads with a reliable thermal-magnetic trip that reduces nuisance trips while still delivering fast response to short circuits. - A design that fits neatly into existing Siemens panel ecosystems, lowering installation time and compatibility concerns. - Durable construction designed for ongoing service in environments subject to vibration and electrical stress, helping you minimize maintenance and downtime.