Siemens | CJ3B225 | Circuit Breaker | 225A | 3-Pole | 600V | 100kA | Bolt-On

Meet the Siemens CJ3B225 Circuit Breaker — a purpose-built, three-pole protection solution engineered for 600 V systems. With a 225 A rating and an impressive 100 kA interrupting capacity, this bolt-on breaker is designed for reliability in maintenance, retrofit, and replacement projects where exact specs matter.

Why choose the CJ3B225 for your panel or switchgear?

• Exact spec alignment — 225 A, 3-Pole, 600 V, 100 kA interrupting capacity. This combination delivers synchronized protection across all three phases, helping safeguard motors, drives, and downstream equipment from severe fault currents.
• Bolt-On mounting — A secure, straightforward installation method that minimizes panel modification while ensuring robust mechanical and electrical contact in crowded or demanding panels.
• Clear compatibility reference — The CJ3B225 part number is the best guide for compatibility. Always verify fit and ratings against your panel documentation before ordering.
• Ideal for retrofit and replacement — When upgrading aging protection or standardizing a spare parts catalog, this 3-pole breaker delivers consistent performance with existing Siemens or compatible gear.
• Protects critical systems under fault conditions — The 100 kA interrupting capability provides stronger short-circuit protection for connected wiring, bus, and equipment, reducing the risk of downstream damage.

Typical use scenarios include upgrading legacy switchgear in manufacturing lines, retrofitting control panels in data centers, or replacing failing breakers in service and distribution panels that require a 225 A, 3-pole, 600 V solution.

Notes: Confirm fit and ratings before ordering. The CJ3B225 part number is the most reliable reference for compatibility with your equipment setup.