Siemens | HGB2K090B | Circuit Breaker | 90A | 2-Pole | 600V | Bolt-On

Siemens HGB2K090B brings dependable overcurrent protection to your 90A, 600V circuits with a bolt-on mounting design that simplifies panel retrofits and replacements. Built for maintenance, retrofit, and new installations where exact compatibility is critical, this 2-pole breaker is ready to slot into compatible Siemens and other approved panels that accept bolt-on devices.

Key specifications

• Amperage: 90A
• Poles: 2-Pole
• Voltage rating: 600V
• Mounting type: Bolt-On
• Part number: HGB2K090B

What makes this breaker unique

• Premium Siemens reliability engineered into every mechanism, ensuring consistent tripping performance under fault conditions.
• Precisely matched to the HGB2K090B specification, making it the definitive choice for projects that require exact part integrity and electrical characteristics.
• Bolt-on mounting offers secure, vibration-resistant installation in compatible panels, reducing field wiring complexity and improving serviceability.
• Designed for real-world retrofit work—whether you’re upgrading older gear, expanding capacity, or replacing a failed unit, this breaker keeps your system protected without surprises.

Ideal use cases

• Panel retrofits and replacements in industrial control panels, commercial electrical rooms, and motor control centers where 90A branch protections are needed.
• New installations requiring a solid, 2-pole, 600V protection device with bolt-on mounting for quick, secure integration.
• Maintenance workflows where the exact part number is the best reference for compatibility and long-term spare strategy.

How to ensure the right fit

• Before ordering, verify that your enclosure or panel accepts bolt-on protective devices and that the available space matches a 2-pole, 90A, 600V profile.
• Use the part number HGB2K090B as the primary compatibility reference to avoid mismatches during replacement or retrofit projects.
• Check that your system’s protection scheme and upstream protections align with a 90A, 600V two-pole breaker to preserve coordinated protection.

Installation and practical considerations

• Power down the equipment and follow proper lockout/tagout procedures before handling any circuit protection device.
• Mount the breaker in a compatible panel with bolt-on hardware, ensuring secure fastening and proper seating for reliable contact.
• After installation, verify all electrical connections are tight and that the device clearly aligns with the circuit’s amperage and voltage requirements.

With the Siemens HGB2K090B, you gain a purpose-built, high-integrity circuit breaker designed to protect critical loads up to 90A in 600V environments. Its bolt-on design streamlines installation, while its exact specifications and part-number accuracy provide peace of mind during replacements, upgrades, or service work. If your project demands precise compatibility and dependable performance, this 2-pole bolt-on breaker is a smart, long-term solution for safeguarding your electrical system.