Siemens CJD63B250 - 250 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens CJD63B250 — a dependable 250 A, 600 V, 3-pole bolt-on molded case circuit breaker designed for robust branch circuit protection in panelboards and loadcenters. Its secure bolt-on mounting creates a rigid, vibration-resistant bus connection, helping maintain steady protection even in environments with equipment vibration or movement.

Why this breaker stands out

• Secure bolt-on mounting delivers a rigid, vibration-resistant connection to the bus, reducing loosening and ensuring consistent electrical performance over time.
• Thermal-magnetic trip unit provides stable, repeatable protection by combining thermal overload sensing with instantaneous magnetic trip for short-circuit events.
• OEM compatibility designed to work seamlessly with matching Siemens OEM loadcenters and panelboards, enabling straightforward installation and reliable integration into existing systems.
• Versatile application suited for residential, commercial, and light industrial settings where dependable branch circuit overcurrent and short-circuit protection is essential.

Technical snapshot

• Manufacturer: Siemens
• Part Number: CJD63B250
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 250A
• Voltage Rating: 600V
• Poles: 3
• Mounting Style: Bolt-on
• Applications: Branch circuit overcurrent and short-circuit protection
• Availability: Supplied by AmpState

Ideal use cases

Perfect for upgrading or equipping panelboards and loadcenters where a 3-pole, 250 A device is required. Residential projects with heavy electrical loads, commercial installations like small offices or retail spaces, and light industrial setups can benefit from the solid protection and reliable performance of this bolt-on MCCB. Its compatibility with Siemens OEM panels helps minimize modification needs and supports a clean, code-compliant installation.

What makes it practical

• Reliability in motion the bolt-on design minimizes loosening over time, helping prevent nuisance trips and maintaining protection levels during equipment operation.
• Clear protection logic the thermal-magnetic trip offers predictable response times, so you know when a fault will be interrupted and circuits will be safeguarded.
• Future-ready choice with OEM compatibility so you can confidently pair this breaker with Siemens panels for a cohesive, long-term solution.

Choose the Siemens CJD63B250 for a proven, high-capacity protective device that blends strong mechanical stability with precise electrical protection. Available from AmpState, it’s a practical, industry-standard choice for dependable distribution and safety in a variety of electrical environments.