Siemens NGB2B125 - 125A, Circuit Breaker

Siemens NGB2B125 — a 125A circuit breaker crafted for serious protection in demanding electrical systems. Built to safeguard panelboards, switchboards, control panels, and OEM equipment, this breaker delivers dependable overcurrent protection where uptime matters most.

• 125 A current rating provides robust protection for feeders and branch circuits in distributed panels.
• Designed for industrial, commercial, and OEM installations, including motor control centers and distribution panels.
• Part of the Siemens NGB2 family, ensuring compatibility with established Siemens protection schemes and easy integration into existing panels.
• Reliable protection and safe operation under fault conditions, helping to minimize equipment damage and downtime.
• Simple installation and replacement in compatible panelboard configurations, reducing maintenance time.

Use cases and ideal environments

• Industrial facilities with heavy-load feeders and motor-driven equipment
• Commercial buildings with large distribution panels and critical control circuits
• OEM equipment builds that require proven overcurrent protection with standardized components
• Retrofit projects updating legacy protection to Siemens NGB2B125 specifications

Why this matters

In any distribution scheme, protecting conductors and devices from overcurrent is essential. The Siemens NGB2B125 delivers a balanced combination of protective performance, ease of integration, and long-term reliability that helps keep systems safe and productive without unnecessary downtime or complex retrofits.

Specifications at a glance

• Current rating: 125 A
• Breaker type: Circuit Breaker
• Applications: panelboards, switchboards, control panels, OEM equipment
• Ideal for: industrial, commercial, and OEM applications requiring dependable overcurrent protection in distribution panels and motor control centers