Siemens HJX3P400 - 1213-4A, Circuit Breaker

Meet the Siemens HJX3P400 - 1213-4A, a purpose-built circuit breaker engineered for robust overcurrent protection in demanding electrical environments. Designed to keep critical systems reliable, it providesFast, predictable response to faults in today’s complex panel setups.

This Siemens circuit breaker is suitable for use in panelboards, switchboards, control panels, and OEM equipment. Whether you’re upgrading an existing installation or integrating a new solution, the HJX3P400 delivers dependable protection where it matters most—across industrial, commercial, and OEM applications.

Key specifications

• Current rating: 1213-4A
• Breaker type: Circuit Breaker

Where it fits best

Ideal for distribution panels and motor control centers, this unit is purposefully designed for environments that demand consistent protection and safe operation. It aligns with panelboards, switchboards, control panels, and OEM equipment, helping to streamline installation and maintenance within a Siemens-backed ecosystem.

Why the HJX3P400 stands out

In high-stakes electrical applications, reliability is non-negotiable. The HJX3P400 from Siemens offers solid overcurrent protection that helps prevent damage to wiring, transformers, and downstream equipment, while supporting safe and predictable shutdowns during fault events. By leveraging Siemens’ proven design and compatibility with existing Siemens components, it reduces integration risk and simplifies spare-part planning for service teams.

Use cases and scenarios

• New installations in panelboards, switchboards, and control panels where compact, dependable protection is required.
• OEM equipment builds that demand a trusted protection device with proven performance characteristics.
• Repairs or upgrades to motor control centers, where consistent fault interruption minimizing downtime is critical.
• Industrial processes with varying load profiles, where rapid current interruption protects motors and drives from electrical faults.

Practical tips for getting the most from your purchase

• Confirm the current rating (1213-4A) matches your circuit’s protection needs to ensure proper coordination with upstream protection devices.
• Plan for a seamless replacement by checking enclosure compatibility and mounting requirements within your existing Siemens installation.
• Keep a spare unit in your maintenance stock to minimize downtime during panel servicing or replacements.

With the Siemens HJX3P400 - 1213-4A, you’re selecting a protected, future-ready solution that supports continuous operation, safer distributions, and straightforward maintenance across industrial, commercial, and OEM environments.