Siemens SLD69500NGT - 500 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Introducing the Siemens SLD69500NGT, a purpose-built 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. With a 500A rating and a 600V maximum, it’s ready to handle demanding residential, commercial, and light industrial distribution needs. This unit pairs Siemens reliability with a mounting approach engineered for longevity, making it a strong backbone for your electrical infrastructure.

What makes the SLD69500NGT uniquely effective

• Secure bolt-on mounting for a rigid, vibration-resistant bus connection. This design minimizes connection wear and movement under continuous load, promoting consistent protection and reducing maintenance concerns over time.
• Thermal-magnetic trip unit delivers stable, repeatable protection performance. It responds to both gradual overloads and sudden short circuits, helping to prevent damage to downstream equipment and enabling predictable shutdown behavior for safer system operation.
• 3-pole configuration suited for 3-phase panelboards and loadcenters. Coordinated trip across all phases ensures simultaneous disconnection, preserving system balance and preventing phase-to-phase faults.
• High-current capability at 500A with a 600V rating, enabling robust protection for larger branch circuits and equipment while maintaining compatibility with standard electrical distribution gear.
• OEM-compatible design built to work with matching Siemens OEM loadcenters and panelboards, providing a straightforward, reliable replacement or upgrade path without compatibility surprises.

Technical snapshot

• Manufacturer: Siemens
• Part Number: SLD69500NGT
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 500A
• Voltage Rating: 600V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

This bolt-on breaker excels in panels and load centers where high-current protection is needed across multiple circuits. It’s a solid choice for upgrading existing commercial distribution gear, new-build panel installations in warehouses or light industrial facilities, and residential systems that demand robust protection for larger branch circuits. The Siemens SLD69500NGT is designed for environments where dependable, predictable protection and secure mechanical mounting are priorities.

Benefits that matter in practice

• Reliability in challenging environments: the bolt-on connection stands up to vibration and thermal cycling, reducing the chance of loose connections that can compromise protection.
• Consistent protection curves: the thermal-magnetic trip ensures accurate response to overloads and short circuits, helping you avoid unwanted nuisance trips while safeguarding equipment.
• Seamless integration: OEM compatibility means simpler stocking, faster replacements, and less downtime when coordinating with existing Siemens panelboards and load centers.

Practical tips for installation and operation

When installing the SLD69500NGT, follow the standard torque specifications provided by Siemens and ensure the mounting hardware is securely fastened to maintain a solid electrical connection. Plan for proper clearance and ventilation around the breaker to maintain thermal performance. For ongoing reliability, pair this breaker with compatible Siemens panelboard configurations to preserve coordinated protection across the distribution system.

Choosing the Siemens SLD69500NGT means opting for a high-capacity, dependable protection solution that aligns with OEM equipment and delivers consistent performance across residential, commercial, and light industrial applications. Available from AmpState, this 3-pole bolt-on breaker is designed to be a durable cornerstone of your electrical distribution strategy.