Siemens HGB1K025B 25A 1-Pole 347 V Circuit Breaker

Siemens HGB1K025B delivers reliable overcurrent protection for 347 V electrical systems with a compact 1-Pole design. Rated at 25 A, this breaker guards a single hot conductor, helping prevent wiring damage and electrical fires while keeping your panel organized and accessible.

• Current rating: 25 A
• Poles: 1
• Voltage rating: 347 V
• Part number: HGB1K025B
• Brand: Siemens

Why this model stands out

• Single-pole protection tailored for a dedicated branch circuit in commercial or industrial environments that use 347 V distribution.
• Versatile for lighting, power distribution, or control circuit applications where precise 25 A protection is required.
• Compact form factor simplifies panel layout and reduces the risk of space constraints during upgrades or repairs.
• Designed for straightforward installation and replacement within compatible Siemens panels, helping minimize downtime when service is needed.

Practical use cases

• Upgrading a lighting run on a 347 V circuit in a retail or office building, ensuring safe current limits for wiring and fixtures.
• Replacing a failed breaker on a dedicated 25 A branch circuit such as vending, pumps, or generic receptacle circuits within a Siemens panel.
• Part of a controlled sequence in a small control panel where a 1-pole, 25 A protection device is appropriate.

Key considerations for installation

• Verify that your electrical system operates at 347 V and that a single-pole, 25 A device meets the protection needs of the circuit.
• Confirm physical and electrical compatibility with your existing Siemens panel and bus connection before replacement.
• Follow all safety guidelines and local electrical codes during installation or replacement.

Notes

For installers and procurement teams, the Siemens HGB1K025B is the precise part number to specify when sourcing a 25 A, 1-Pole 347 V circuit breaker for Siemens-based electrical infrastructure. Using the exact model helps ensure consistent performance and compatibility across Siemens-branded panels and components.