Siemens 3VA5110-4EF31-0AA0 Circuit Breaker, 125A, 3-Pole, 480V

Introducing the Siemens 3VA5110-4EF31-0AA0 circuit breaker — a rugged, three-pole protective device built for industrial electrical service, maintenance, and replacement projects operating on 480V three-phase power. With a 125 A current rating, it delivers reliable overcurrent protection for feeders and critical machinery while integrating smoothly with compatible Siemens switchgear and control panels.

Why this model stands out

• Three-pole design provides balanced protection across all three phases, simplifying wiring for 480V systems and reducing the risk of phase imbalances.
• 125 A rating offers scalable protection for mid-range feeders and equipment, helping prevent damage from overloads without frequent nuisance trips.
• Exact part number 3VA5110-4EF31-0AA0 ensures compatibility with Siemens infrastructure—use this number to confirm fit against your specific application requirements.
• Designed for straightforward maintenance and reliable replacement in ongoing service environments, minimizing downtime during panel upgrades or retrofits.
• Ideal for industrial facilities, manufacturing lines, and process environments where robust, dependable protection for 480V three-phase power is essential.

Notes: Verify fit by part number and application requirements. Need help matching a part number or confirming compatibility? Message us and we'll help you confirm whether this 3VA5110-4EF31-0AA0 fits your exact panel or switchgear setup.

Practical applications and scenarios

• New installations in 480V three-phase control panels where Siemens breakers are the standard.
• Retrofits and replacements in aging equipment where maintaining consistent protection is critical to uptime.
• Maintenance cycles for manufacturing lines that require quick, reliable part identification to minimize downtime.

With the Siemens 3VA5110-4EF31-0AA0, you’re selecting a proven, industry-aligned solution that prioritizes reliability, compatibility, and straightforward integration — helping you protect your systems, extend equipment life, and keep operations running smoothly.