Siemens HGB3B015B - 15 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Introducing Siemens HGB3B015B—a 15A, 600V, 3-pole bolt-on molded case circuit breaker engineered to deliver reliable branch circuit overcurrent and short-circuit protection in panelboards and load centers. This unit is built to perform where it matters most, keeping electrical systems safe and dependable.

Key features are designed to enhance installation reliability and protection performance in real-world settings. The secure bolt-on mounting creates a rigid, vibration-resistant bus connection, reducing the risk of loose connections that can lead to heat buildup or intermittent tripping. Pair it with Siemens OEM load centers for seamless compatibility and streamlined replacements.

• Bolt-on mounting for a sturdy, vibration-resistant connection to the bus
• Thermal-magnetic trip unit delivers stable, repeatable protection across temperature variations
• 3-pole design with common-trip functionality ideal for 3-phase systems
• 15A, 600V rating tailored for branch circuits requiring reliable protection
• OEM compatibility designed to work with matching Siemens load centers and panelboards

Who is this breaker for? It’s a versatile choice for residential, commercial, and light industrial installations where dependable protection and easy serviceability matter. Use it to safeguard motors, lighting, and general-purpose 3-phase loads, or as a ready-to-install replacement part in existing Siemens panels to minimize downtime and service complexity.

Technical specifications

• Manufacturer: Siemens
• Part number: HGB3B015B
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 15A
• Voltage rating: 600V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical notes for use: install by following standard electrical codes and the panelboard’s installation guidelines. This unit is positioned as a ready-to-install, OEM-compatible solution that helps maintain system reliability and safety with predictable trip behavior and robust mechanical mounting.