Siemens | NGB2K070B | Circuit Breaker | 70A | 2-Pole | 600V | Bolt-On

Siemens NGB2K070B is a dependable 70A, 2-pole circuit breaker designed for 600V systems. With its bolt-on mounting, this unit delivers a secure, clean installation that’s ideal for maintenance, retrofit, and replacement projects where exact specifications matter. Built by Siemens, it pairs precise protection with reliable performance in demanding electrical environments.

Key specifications

• Amperage: 70A
• Poles: 2-Pole
• Voltage rating: 600V
• Mounting: Bolt-On
• Part number: NGB2K070B

What sets this breaker apart

• Precise compatibility: Specifically identified by part number NGB2K070B, making it a reliable match for panels and switchgear that require this exact specification.
• Secure, quick installation: Bolt-on mounting simplifies mounting and ensures a robust connection that stands up to vibration and long-term use.
• Clear protection at high voltage: Rated for up to 600V, this breaker provides dependable overcurrent protection in medium- and high-voltage DC/AC applications within its design limits.
• Maintenance-friendly: Designed for retrofit or replacement scenarios, helping technicians minimize downtime and keep systems compliant.

Ideal use cases

• Maintenance work on existing electrical panels where a 70A, 2-pole, 600V bolt-on breaker is required.
• Retrofit projects upgrading legacy gear to meet current protection standards and load requirements.
• Replacement installations that demand exact part-number compatibility to avoid unnecessary aftermarket adjustments.

Installation and compatibility tips

Before ordering, confirm fit and ratings for your panel or switchgear. The part number is your best reference for compatibility, so match NGB2K070B to the panel documentation and labeling. For seamless installation, ensure the mounting footprint aligns with the existing bolt pattern and that the panel’s voltage class supports a 600V device. If you’re updating a legacy system, verify any code or manufacturer requirements related to breaker replacement to maintain code compliance and system safety.