A6X30017721

Overview

The Siemens A6X30017721 is a three-pole molded case circuit breaker designed for industrial circuit protection. It features a rated current of 400 Amperes and an AC voltage rating of 600 Volts. The unit includes low lugs for simplified wiring connections. This component serves as a critical safety device within electrical distribution systems, providing overload and short-circuit protection for downstream equipment.

Feature Summary

• Three-pole configuration for multi-phase circuit interruption
• Molded case construction for robust physical protection
• Integrated low lugs to facilitate secure cable termination

Applications

• Industrial power distribution panels
• Commercial building electrical infrastructure
• Machine tool main power supply circuits

Procurement Notes

Verify the specific terminal lug configuration matches the existing busbar or cable setup. Confirm that the 400A current rating and 600VAC voltage class align with the system design requirements. Ensure compatibility with upstream protective devices to maintain proper coordination. Check for any regional certification marks required for installation compliance.

Selection Notes

Select this model when a 400A three-pole protection solution is required for 600VAC systems. Consider the physical dimensions and mounting style to ensure fit within the enclosure. Evaluate the breaking capacity against potential fault currents in the network. Compare against alternative brands if specific form-fit-function replacements are needed.

Part Context

This part number belongs to Siemens' lineup of molded case circuit breakers. These devices are engineered for reliable operation in demanding electrical environments. The product line emphasizes safety, durability, and ease of maintenance for industrial and commercial applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult official Siemens catalogs or authorized distributors for cross-reference data before replacing.