Siemens | NNG3B800 | Circuit Breaker | 3-Pole

Siemens NNG3B800 3-Pole Circuit Breaker is a dependable protection solution designed for three-phase electrical systems. This 3-Pole unit is ideal for maintenance, retrofit, and replacement projects where exact compatibility with Siemens panels and components matters most.

Key reasons to choose the NNG3B800

• 3-Pole design provides synchronized protection across all three phases, helping prevent phase imbalance and safeguarding motors, drives, and other three-phase loads.
• Part number reference: NNG3B800 — using the exact part number ensures you’re selecting the correct form factor and compatibility for Siemens equipment.
• Compatibility-focused — this breaker is intended for environments where matching specs is essential. Before ordering, confirm fit and ratings to align with your panel and application.

Who is this product for?

• Maintenance technicians performing service on existing Siemens installations
• Retrofit projects that require a precise Siemens-compatible 3-pole breaker
• Replacement scenarios where a reliable, three-phase protective device is needed to maintain system safety and continuity

Functional benefits and practical use

• Suppresses fault currents across all three phases, helping protect wiring, contactors, and connected equipment.
• Designed to slot into compatible Siemens panels where a 3-pole breaker is specified, streamlining installation, testing, and system coordination.
• Using the correct part number simplifies ordering and reduces the risk of mismatched components during critical retrofit or replacement work.

How to verify compatibility

To ensure a precise match, start with the panel’s model and the breaker’s required electrical ratings. Use the part number NNG3B800 as the primary compatibility reference and cross-check it against your Siemens panel documentation. If you’re unsure, consult the equipment literature or a qualified electrician to confirm voltage, current, and trip characteristics align with your protected load.

Installation and safety notes

• Always de-energize and lock out the circuit before replacement or retrofit work.
• Follow local electrical codes and manufacturer guidelines for installation.
• Keep a record of the replacement part number (NNG3B800) and the panel model for future maintenance reference.