Siemens QJ23B060 - 60 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Introducing the Siemens QJ23B060 60A, 240V, 3-Pole Bolt-On Molded Case Circuit Breaker—a purpose-built solution for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers.

Built to withstand vibration and demanding service conditions, this breaker uses secure bolt-on mounting that delivers a rigid, vibration-resistant bus connection, helping maintain steady electrical performance over time.

• Thermal-magnetic trip unit: combines a precise thermal element for overload detection with a fast-acting magnetic element for immediate response to short circuits, delivering stable, repeatable protection performance.
• 3-pole, 60 A, 240 V: ideal for three-phase circuits and distribution feeders common in commercial and light-industrial applications.
• OEM panel compatibility: designed to pair with Siemens OEM load centers and panelboards, ensuring seamless integration and field upgradeability.
• Bolt-on mounting: simplifies installation and servicing in existing panels, with robust bus connections that resist vibration and arcing wear over time.

Where this breaker shines

• Residential and light commercial panels requiring reliable three-phase protection for lighting, receptacle circuits, small motors, and HVAC feeders.
• Panel retrofits or upgrades in older systems that need a rugged, easy-to-service bolt-on breaker with predictable trip behavior.
• Industrial-leaning circuits in small machinery or control panels where space is constrained and panel punch-throughs benefit from a compact molded-case design.

Technical notes

• Manufacturer: Siemens
• Part number: QJ23B060
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 60 A
• Voltage rating: 240 V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical tips for best results

• Confirm panelboard compatibility with Siemens QJ series load centers before installation to ensure a perfect fit and bus alignment.
• Use the bolt-on mounting in panels designed for bolt-on breakers to maintain secure, vibration-resistant connections in environments with equipment vibration or thermal cycling.
• Consider the thermal-magnetic trip curve to evaluate coordination with upstream protective devices and downstream branch circuits for clean, predictable tripping behavior.