3VA5211-6EF31-0AA0 - HFAS 110 Amp Circuit Breaker

3VA5211-6EF31-0AA0 - HFAS 110 Amp Circuit Breaker

The Siemens 3VA5211-6EF31-0AA0 is a solid, no-nonsense circuit breaker built for everyday reliability in commercial and industrial setups. Rated at 110 amps with a 3-pole design, it’s made to protect three-phase systems from overloads and short circuits without overcomplicating the job. If you’re looking for something dependable that installs easily and just works, this one checks those boxes.

This breaker uses a thermal magnetic trip unit, which means it reacts to both long-term overloads and sudden faults. The settings are factory-fixed, so there’s no need to dial anything in on-site—what you get is consistent, predictable protection right out of the box. With a 35kA interrupting rating at 480V, it’s ready to handle serious fault conditions without hesitation. It’s also housed in a compact 250 frame, so it won’t take up more panel space than necessary.

In short, this is the kind of breaker you install once and don’t have to think about again.

Key Features and Benefits

• 110 Amp rating – Well-suited for a wide range of commercial and industrial circuits
• Thermal magnetic protection – Covers both overloads and short circuits
• 35kA @ 480V interrupting capacity – Handles high fault currents with confidence
• 3-pole configuration – Designed for three-phase systems
• Fixed trip settings – No adjustments needed, fewer installation variables
• Compact frame size (250) – Saves space inside panels
• Consistent performance – Built for long-term, everyday use

Technical Specifications

• Manufacturer: Siemens
• Part Number: 3VA5211-6EF31-0AA0
• Series: 3VA52
• Poles: 3
• Amperage: 110A
• Interrupting Rating: 35kA @ 480V
• Frame Size: 250
• Trip Unit: Thermal Magnetic (TM240, ATAM)
• Overload Protection (Ir): 110A (fixed)
• Short-Circuit Protection (Ii): 10 × In (fixed)
• Dimensions:
  • Height: 9.65 in
  • Width: 6.3 in
  • Depth: 5.9 in

Material Compliance and Certifications

• UL Standards: This breaker is built to meet UL standards, so it aligns with widely accepted safety and performance requirements in the U.S. electrical industry. Siemens designs these units with dependable materials and tested performance in mind, which is critical when you’re dealing with power distribution and equipment protection. Reliable, clearly documented specifications are a key part of building trust in electrical components .

Where It Works Best

• You’ll typically see this breaker used in commercial buildings, industrial facilities, and OEM equipment panels. It’s a good fit for distribution panels, motor protection, and general three-phase applications where you need straightforward, dependable protection without extra complexity.