3VA5322-5EF31-0AA0 - 225A Class MJAS 3-Pole Circuit Breaker

3VA5322-5EF31-0AA0 - 225A Class MJAS 3-Pole Circuit Breaker

If you’re looking for a circuit breaker that does its job without fuss—but with serious reliability behind it—the Siemens 3VA5322-5EF31-0AA0 is a solid choice. Built for real-world electrical demands, this 225A, 3-pole molded-case circuit breaker keeps your systems protected and running smoothly. Whether you’re managing a commercial facility or an industrial setup, this breaker gives you the confidence that overloads and short circuits won’t turn into costly downtime. With its thermal magnetic trip unit, you get fast, accurate response when it matters most, plus the flexibility to fine-tune protection settings to match your application.

Key Features and Benefits

• Dependable 225A Circuit Protection – Handles medium-capacity electrical loads with consistency.
• Thermal Magnetic Trip Unit (TM240) – Provides both overload and instantaneous short-circuit protection in one efficient design.
• Adjustable Protection Settings – Overload range from 180A to 225A and instantaneous trip from 5–10x rated current for tailored performance.
• High Interrupting Capacity – Rated at 35 kA @ 480V AC (Class M), helping protect equipment from severe fault conditions.
• 3-Pole Design – Ideal for three-phase power distribution systems.
• Space-Saving 400A Frame – Compact footprint without sacrificing capability.
• Built for Demanding Environments – Designed to handle the everyday realities of commercial and industrial use.

Technical Specifications

• Series / Type: Siemens 3VA5 (3VA53)
• Part Number: 3VA5322-5EF31-0AA0
• Poles: 3
• Amperage: 225A
• Frame Size: 400A
• Interrupting Rating: 35 kA @ 480V AC
• Trip Unit: Thermal Magnetic (TM240, ATAM)
• Overload Range (Ir): 180A – 225A
• Instantaneous Trip (Ii): 5–10x In
• Dimensions: 9.8" H × 6.3" W × 5.9" D
• Lugs: Not included

Material Compliance and Certifications

• UL Standards: This breaker is manufactured to meet UL standards, aligning with the strict safety and performance requirements for molded-case circuit breakers. That means you’re not just getting protection—you’re getting equipment that meets recognized industry benchmarks for reliability and compliance.

Where It Works Best

• You’ll typically find this breaker in commercial buildings, industrial panels, and power distribution systems where dependable protection is non-negotiable. It’s a great fit for manufacturing facilities, mechanical equipment protection, and infrastructure projects—especially where adjustable trip settings help fine-tune system performance without overcomplicating installation.