Siemens | CJ2B150 | Circuit Breaker | 2-Pole | 240V | Bolt-On

Meet the Siemens CJ2B150—a 2-pole, 240V bolt-on circuit breaker designed for reliable protection in industrial and commercial electrical distributions. Built to align with the CJ2 family, this unit is the smart choice for maintenance, retrofit, and replacement projects that demand exact specifications and dependable performance.

Key specifications

• Poles: 2-Pole
• Voltage: 240V
• Mounting: Bolt-On
• Reference: CJ2B150 (best compatibility reference)

Why this CJ2B150 matters for your system

Exact spec alignment matters when protecting circuits that run at 240V. The CJ2B150 provides robust, compatible protection for dual-line applications, ensuring coordinated disconnection and reliable fault isolation in your panel. The bolt-on design enables secure mounting in compatible Siemens enclosures, supporting straightforward field service and future upgrades.

Ideal use cases

• Maintenance on existing Siemens CJ2B-compatible panels to restore original protection
• Retrofit projects that require a precise match to legacy CJ2B150 specifications
• Replacement of aging or failed breakers in systems designed for 240V dual-line protection

Compatibility and ordering tips

Before ordering, confirm fit and ratings to ensure a seamless swap. The CJ2B150 part number is the best reference for compatibility, helping you verify the exact form, mounting, and electrical characteristics match your panel and application.