Siemens B315 - 15 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Siemens B315 is a reliable 15A, 240V, 3-pole bolt-on molded case circuit breaker designed to protect your electrical system where it matters most. Built for dependable branch-circuit overcurrent and short-circuit protection in panelboards and load centers, this breaker delivers consistent performance you can trust in everyday residential, commercial, and light industrial settings.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection that stays put through steady use and equipment movement.
• Thermal-magnetic trip unit delivers stable, repeatable protection across varying temperatures and load conditions, snapping open quickly on short circuits and sustained overloads.
• 3-pole at 240V is ideal for three-phase feeders and multi-pole circuits within Siemens-compatible panelboards and load centers.
• 15A rating protects circuits such as lighting, outlets, and small motors without unnecessary nuisance trips.
• OEM-compatible designed to fit matching Siemens load centers and panelboards for a seamless, Code-compliant installation.

Whether you’re upgrading an aging panel, stocking a commercial electrical room, or equipping a light industrial installation, the B315 delivers clear protection with a straightforward, durable mounting solution. It’s particularly well-suited for applications where vibration and long-term reliability matter—industrial panels, equipment enclosures, and service entrances alike.

Technical specifications

• Manufacturer: Siemens
• Part Number: B315
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 15A
• Voltage Rating: 240V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection