Siemens B280HH - 80 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

The Siemens B280HH from AmpState is a rugged, 2-pole bolt-on molded case circuit breaker engineered to deliver dependable branch circuit overcurrent and short-circuit protection at 80 A and 240 V. Built for a secure, vibration-resistant connection, it’s the reliable choice for residential panels, commercial load centers, and light industrial panelboards.

• Secure bolt-on mounting: Designed to lock firmly onto the bus, delivering a rigid, vibration-resistant connection that minimizes loosening risks in demanding environments.
• Thermal-magnetic trip unit: Combines precise thermal overload sensing with an instantaneous magnetic trip for fast, repeatable protection during short circuits and surges.
• OEM-compatible design: Made to harmonize with matching Siemens OEM load centers and panelboards, ensuring straightforward integration and reliable performance.
• Versatile for multiple spaces: Ideal for residential service panels, commercial distribution, and light industrial applications where robust, dependable protection is required.

Key specifications at a glance

• Manufacturer: Siemens
• Part number: B280HH
• Type: Thermal-magnetic molded case circuit breaker
• Amperage: 80 A
• Voltage: 240 V
• Poles: 2
• Mounting: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Use cases and who benefits most

• Home electrical panels requiring reliable 80 A protection for feeder or subfeed circuits.
• Small to mid-size commercial panels where a durable, bolt-on breaker helps maintain a clean, secure bus connection.
• Load centers and panelboards in light industrial settings that demand consistent, repeatable trip performance under varying loads.
• Retrofits or replacements in Siemens-enabled systems where OEM compatibility simplifies installation and reduces troubleshooting.

Why it matters in real-world installations

Electrical protection isn’t just about breaking the circuit—it’s about predictable behavior when it matters most. The B280HH’s thermal-magnetic mechanism provides a well-defined response curve, so overloads and faults trip at the right thresholds, helping prevent damage to wiring, devices, and appliances. The bolt-on design keeps bus connections tight even in environments with temperature swings or vibration, reducing nuisance trips and service calls.

Installation and compatibility tips

Pair this breaker with Siemens OEM load centers and panelboards to maintain overall system integrity. Ensure the panel specifies bolt-on molded-case breakers of the same family for optimal fit and performance. When planning upgrades or replacements, confirm that an 80 A, 240 V, 2-pole configuration aligns with your feeder sizing and downstream loads. For maintenance, inspect the mounting hardware and bus connection periodically to verify a secure fit and trip accuracy.