Siemens 5SP4280-7 Circuit Breaker, 80A, 2-Pole, 400V

The Siemens 5SP4280-7 circuit breaker is built for rugged industrial service, delivering dependable overcurrent protection where reliability matters most. With an 80 A rating and a two-pole design for 400 V systems, this breaker is ready to safeguard motor drives, control panels, and distribution boards during both operation and maintenance work.

Why this 5SP4280-7 stands out

• Proven Siemens protection—a trusted trip mechanism designed to respond to overloads and short circuits, helping minimize downtime and equipment damage.
• Two-pole, 400 V compatibility—optimized for standard industrial 400 V networks, providing reliable protection across paired conductors in demanding environments.
• 48-year-ready compatibility—the exact part number 5SP4280-7 supports streamlined replacements and service updates in existing Siemens installations.
• Ease of replacement—engineered for straightforward swap-ins in panels and equipment that require robust, field-ready circuit protection.

Specifications at a glance

• Part Number: 5SP4280-7
• Product Type: Circuit Breaker
• Amperage: 80 A
• Poles: 2
• Voltage: 400 V

Ideal use cases

• Industrial electrical service panels that require reliable 80 A, 2-pole protection for 400 V circuits.
• Maintenance and replacement projects where compatibility with the Siemens 5SP family accelerates installation and testing.
• Motor control centers and distribution boards in manufacturing settings where downtime costs matter.

Compatibility and installation considerations

To ensure a perfect fit, verify the application requirements align with the 5SP4280-7 specifications. The part number is your quickest confirmation of compatibility with your panel or equipment. If you need help matching a part number or confirming compatibility, send us a message and we’ll assist you in validating fit for your exact setup.

With the Siemens 5SP4280-7 in your inventory, you gain a reliable, field-proven solution for protecting critical 400 V circuits, reducing risk during maintenance, and keeping industrial systems running smoothly.