Siemens | EH3A040 | Circuit Breaker | 3-Pole | 480V | Bolt-On

Introducing the Siemens EH3A040 Circuit Breaker — a precise, reliable solution for 480V three-phase systems. This 3-pole, bolt-on breaker is designed for maintenance, retrofit, and replacement projects where exact compatibility matters, ensuring you keep critical electrical infrastructure protected and ready.

• Poles: 3-Pole
• Voltage rating: 480V
• Mounting: Bolt-On
• Reference: Part number EH3A040

Whether you’re upgrading an aging panel, conducting routine maintenance, or replacing a failed unit, the EH3A040 delivers dependable performance in demanding environments. The bolt-on design provides secure, durable mounting for steady operation in vibration-prone applications, helping minimize service interruptions.

Why this Siemens breaker stands out:

• Exact compatibility through the part number EH3A040 — reduces guesswork and ensures you’re ordering the right unit for your panel or enclosure.
• Three-pole configuration supports complete disconnection of all three phases, enhancing safety during maintenance and fault isolation in 480V systems.
• Bolt-on installation offers a solid, field-friendly mounting method that’s well-suited to retrofit projects and refurbished equipment.
• Designed for demanding industrial environments and applications where reliable overcurrent protection is essential, from manufacturing lines to large commercial facilities.

This model is ideal for electrical professionals, facilities engineers, and maintenance teams who need a trusted Siemens solution that integrates smoothly with existing 480V, three-phase infrastructure. It’s particularly well-suited for spare-part inventories, retrofit programs, and service-ready replacements where uptime matters.

Important note: always confirm fit and ratings before ordering. Cross-check panel catalogs and electrical diagrams to ensure EH3A040 matches your equipment’s specifications and bus-bar configuration. With the right match, this 3-Pole, 480V bolt-on breaker helps you maintain safe, compliant, and efficient power distribution.

If you’re assembling parts for a planned retrofit or planning a routine maintenance cycle, the Siemens EH3A040 is a dependable, purpose-built choice that aligns with standard Siemens drafting and compatibility practices—delivering peace of mind when it counts.