CH390ST | Circuit Breaker | 3-Pole

Meet the CH390ST, a rugged industrial circuit breaker designed to deliver reliable protection for three-phase systems. This 3-Pole model is identified by its part number, making it a precise choice for maintenance, retrofit, and replacement projects where exact compatibility matters.

Why the CH390ST stands out

• Three-pole configuration provides coordinated protection across all three phases, helping safeguard wiring and equipment in electrical panels.
• Part-number precision simplifies sourcing and eliminates guesswork during upgrades or service calls.
• Built for demanding industrial environments, offering dependable performance through routine maintenance cycles and extended use.

Key details to know

Poles: 3-Pole. Important: Confirm fit and ratings before ordering. The CH390ST part number is the best reference for compatibility with your existing equipment.

Ideal use cases

• Maintenance: Replace aging or worn breakers with a model that matches your current setup using the CH390ST reference.
• Retrofit: Upgrade three-phase circuits with a compatible breaker that preserves original protection characteristics.
• Replacement: Quick, dependable swap-in for failed CH390ST or similar three-pole breakers in industrial control rooms.

Practical buying guidance

To ensure a smooth installation, rely on the CH390ST part number as your primary compatibility reference and verify that the breaker’s fit aligns with your panel or equipment’s form factor. Keeping your original documentation or panel labeling handy can help confirm the correct match for a trouble-free upgrade or maintenance swap.