Siemens | FJ63B200 | Circuit Breaker | 200A | 3-Pole | 600V | 18kA

Experience reliable overcurrent protection with the Siemens FJ63B200 circuit breaker. Engineered for demanding electrical rooms, this 200A, 3-pole unit delivers robust performance in 600V systems and handles high fault currents with an 18kA rating.

Whether you're performing a maintenance, retrofit, or replacement, this Siemens part is designed to drop into compatible panels with minimal fuss, keeping your electrical distribution secure and compliant.

Key specifications

• Amperage: 200A
• Poles: 3-Pole
• Voltage: 600V
• Short-circuit rating: 18kA

Designed for professional applications

This breaker is ideal for three-phase feeders, service entrances, and panel upgrades where a reliable, Siemens-branded solution is preferred. Use in commercial facilities, manufacturing floors, or data centers where consistent trip performance protects equipment and personnel.

Why choose the FJ63B200?

• Direct-fit replacement: Aligns with existing Siemens panels and compatible enclosures to simplify retrofits.
• Clear compatibility reference: The part number FJ63B200 is the best guide for matching hardware and ratings.
• High interrupting capacity: 18kA rating provides protection against high-energy faults typical in industrial environments.
• 600V system readiness: Designed for standard industrial electrical distributions operating up to 600V.

Before you order

Confirm fit and ratings before ordering. Use the part number FJ63B200 as the primary reference to ensure compatibility with your panel, bus, and wiring configuration. This reduces the risk of mis-match and ensures reliable protection from day one.

Installation and maintenance tips

Power down the panel and follow lockout/tagout procedures before work. Verify your panel's rating and conductor sizes match the breaker requirements. For retrofit projects, plan for any minor panel modifications or adapter requirements and consult the panel manufacturer's guidelines to preserve warranty and safety standards.