Siemens ED42B110 - 110 A, 480 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Designed for reliable branch circuit protection in commercial, residential, and light-industrial installations, the Siemens ED42B110 is a 110 A, 480 V, 2-pole bolt-on molded case circuit breaker. Built for durability in panelboards and load centers, it delivers consistent protection in demanding electrical environments.

• Secure bolt-on mounting: a rigid, vibration-resistant connection to the bus for long-term reliability.
• Thermal-magnetic trip unit: combines thermal overload sensing with instantaneous magnetic tripping for fast, predictable response to both overloads and short circuits.
• OEM panel compatibility: engineered to pair with matching Siemens OEM load centers and panelboards, ensuring proper fit, UL compatibility, and streamlined service replacement.
• Versatile application: ideal for residential, commercial, and light industrial circuits requiring reliable 110 A protection at up to 480 V.

Key specifications

• Amperage rating: 110 A
• Voltage rating: 480 V
• Number of poles: 2
• Mounting style: Bolt-on
• Type: Thermal-magnetic molded case circuit breaker

Practical uses and scenarios:

• Replacing a failed breaker in Siemens-compatible panelboards/loadcenters to restore reliable protection without rewiring.
• Protecting a 480 V feeder circuit serving motors, heaters, or distribution panels in light commercial spaces.
• Upgrading aging protection to a bolt-on design that resists vibration in busy equipment rooms or industrial environments.

Who this is for: electrical contractors, facility managers, maintenance teams, and property owners who need dependable, easy-to-install 110 A protection for 480 V circuits in panelboards and load centers.

Compared to other protection options, the ED42B110’s bolt-on mounting reduces bus connection looseness due to vibration, while its thermal-magnetic trip ensures both gradual and rapid protection as conditions change—delivering repeatable protection performance over time.