Siemens 5SN3G40A - 40A, 380VAC / 415VAC, Circuit Breaker

Siemens 5SN3G40A is a robust 40A circuit breaker built for demanding industrial power systems. Rated for up to 380V and 415V, it delivers dependable overcurrent protection where it matters most—in distribution panels, switchboards, control panels, and OEM equipment. When reliability and safe operation are non-negotiable, this Siemens breaker is designed to perform load-after-load in challenging environments.

• 40A current rating provides precise protection for medium-to-high demand circuits, helping prevent damage from overloads without unnecessary interruptions.
• Voltage tolerance of 380VAC / 415VAC makes it compatible with common three-phase industrial networks, easing integration into existing systems.
• Versatile installation suitable for panelboards, switchboards, control panels, and OEM equipment, supporting a wide range of industrial and commercial applications.
• Reliable overcurrent protection safeguards critical equipment and wiring in distribution panels and motor control centers, reducing downtime and repair costs.
• Siemens engineering and durability backed by a long-standing track record in electrical protection, delivering consistent performance in demanding environments.
• Ideal for industrial, commercial, and OEM applications where robust protection and safe operation are essential for uptime and equipment longevity.

Practical use cases

• Protect feeder circuits in switchboards powering conveyors, pumps, and automated processes within factory floors.
• Safeguard critical sections of motor control centers, preventing damage from short circuits or overloads while keeping production moving.
• Integrate into OEM equipment builds that require reliable, up-to-spec overcurrent protection for 380–415V systems.

Why choose the Siemens 5SN3G40A

• Purpose-built for panels and assemblies where uninterrupted protection and quick, predictable tripping are essential.
• Clear alignment with 380–415V industrial power distributions, simplifying design and maintenance planning.
• Part of a trusted Siemens protection lineup, offering consistent performance across a range of industrial applications.

Whether you’re upgrading an existing distribution network or designing a new control architecture, the Siemens 5SN3G40A delivers focused protection that keeps systems running smoothly. Its combination of a solid 40A rating and 380/415V compatibility makes it a reliable choice for mid-range loads in demanding environments.