Siemens | NGB1K015B | Circuit Breaker | 15A | 1-Pole | 347V

Introducing Siemens NGB1K015B — a 15A, 1-Pole circuit breaker designed for 347V applications. This unit is tailored for maintenance, retrofit, and replacement tasks where exact specifications matter, delivering reliable protection for single‑phase circuits.

Key to its value is the part number itself: NGB1K015B is the best reference for compatibility. Always verify fit and ratings before ordering to avoid mismatches in panel or bus compatibility.

Key specifications

• Amperage: 15 A
• Poles: 1-Pole
• Voltage: 347 V
• Compatible reference: NGB1K015B (use this as the reference when checking compatibility)

What makes it stand out

Unlike generic substitutes, this Siemens breaker is designed to slot into systems that require 347V single-pole protection and an exact 15A rating. Using the NGB1K015B ensures mechanical fit, proper mounting, and alignment with Siemens’ bus connections, simplifying replacements in older panels or retrofit projects.

Ideal use cases

• Maintenance: swap in a direct, 15A, 1-Pole unit for a failed breaker in 347V circuits
• Retrofit: updates to panels that rely on Siemens NGB1K015B specifications
• Replacement: quick, accurate replacement in commercial or industrial installations that use a 347V single‑phase system

Practical tips for a successful install

• Confirm fit and ratings before ordering—the part number NGB1K015B is the most reliable compatibility reference
• Check your panel labeling to ensure it supports a 1-Pole, 347V circuit breaker of 15A
• Have a qualified electrician perform installation in accordance with local electrical codes and the panel manual