Siemens HGG1B030L 30A 1P 277V Circuit Breaker | AmpState

Engineered for commercial electrical distribution, the Siemens HGG1B030L 30A 1P 277V circuit breaker delivers precise overcurrent protection for panelboards, load centers, and distribution panels. This single-pole design is purpose-built for 277-volt circuits, a common setup in commercial lighting and power distribution systems, making it a smart choice for retrofit projects and routine maintenance where the part number must stay consistent.

With its Siemens lineage, the HGG1B030L ensures seamless replacement in compatible assemblies, reduced downtime, and predictable performance across years of service. Keeping the exact part number on hand simplifies ordering, documentation, and field service when updating existing installations.

Key details

• Part Number: HGG1B030L
• Manufacturer: Siemens
• Amperage: 30 A
• Poles: 1
• Voltage: 277 V
• Product Type: Circuit Breaker
• Applications: Panelboards, Load Centers, Electrical Distribution

Where it shines

The HGG1B030L is ideal for:

• New installations in commercial buildings with 277V circuits requiring reliable protection.
• Retrofit work where maintaining the same part number avoids compatibility headaches during panel upgrades.
• Maintenance planning where fast, known-good replacements minimize downtime in electrical distribution systems.

Key benefits and outcomes

• Consistent part number across upgrades, enabling easier procurement and field service.
• Robust 30-amp protection that safeguards wiring and equipment against overload conditions without nuisance tripping for normal loads.
• Designed for straightforward replacement in Siemens-compatible panelboards and load centers, reducing installation complexity.

Compatibility support

Need help confirming fit? AmpState offers the Siemens HGG1B030L and can assist with compatibility checks and part-number matching to ensure the breaker will integrate with your existing panel or distribution system.