Siemens | HE43B100 | Circuit Breaker | 100A | 3-Pole | 480V | Bolt-On

Meet Siemens HE43B100, a 100A, three-pole bolt-on circuit breaker crafted for robust protection in 480V three-phase systems. This unit is designed for maintenance, retrofit, and replacement projects, ensuring Siemens-compatible panels stay protected, compliant, and ready for operation.

• Amperage: 100A — precise protection for crucial branch circuits in demanding industrial environments.
• Poles: 3-Pole — comprehensive protection across all three phases to maintain balanced system performance.
• Voltage rating: 480V — suited for high-voltage, three-phase applications typical in manufacturing, facilities, and heavy equipment setups.
• Mounting: Bolt-On — straightforward field installation with reliable mechanical retention, minimizing panel downtime during replacement.
• Part reference: HE43B100 — the best compatibility reference to ensure a proper fit in Siemens panels.
• Ideal use cases: Maintenance, retrofit, and replacement where exact specifications must be met for safe, compliant operation.

Why this matters: matching amperage, voltage, pole configuration, and mounting method is essential for correct trip coordination, equipment protection, and panel integrity. The HE43B100 is engineered to slot into Siemens frames that accept bolt-on, three-pole breakers, delivering predictable performance and straightforward serviceability.

Practical guidance for choosing and installing:

• Always confirm fit using the part number HE43B100 as your primary reference before ordering.
• Verify your panel’s rating and ensure it accepts bolt-on, 3-pole 480V breakers at 100A for proper coordination and safety.
• During installation, power down the system and follow standard lockout/tagout procedures; handle the breaker carefully to protect the trip mechanism and mounting points.
• For retrofit projects, check bus configuration and mounting frame compatibility to ensure a clean, seamless replacement.

Choosing the Siemens HE43B100 means lean downtime and reliable protection for critical equipment, backed by Siemens’ trusted engineering. It’s a thoughtful, exact-fit solution for industrial electrical systems that demand precise specs and dependable performance.