Siemens 3VA5290-7EC41-0AA0 Molded-Case Circuit Breaker

Key Selection Trade-offs for the 3VA52 Series

1. Four-pole configuration vs. panel space: The 4-pole unit provides simultaneous switching of all phases including neutral, which matters in systems requiring confirmed neutral disconnection. Panel builders must verify width clearance against DIN rail mounting spacing; the 4-pole frame is wider than equivalent 3-pole variants, potentially affecting enclosure layout in space-constrained installations.

2. Fixed 90 A trip vs. future load flexibility: The FTAM (Fixed Thermal Magnetic, Type 4) breaker delivers 90 A without user adjustment. For applications expecting load growth, the fixed rating offers no field-adjustability—upgrade paths require replacement rather than recalibration, which affects long-term maintenance planning.

3. No integral auxiliary contact vs. remote status monitoring: The base unit lacks factory-fitted auxiliary contacts. When remote indication or SCADA integration is required, panel builders must plan for external mounting kits or separate monitoring modules, adding wiring and component cost that some alternatives bundle in the same MPN suffix position.

4. 100 kA interrupt rating vs. downstream coordination: The 100 kA rating accommodates high prospective short-circuit levels, useful in mains-fed panels with transformer-limited fault currents. This spec should be cross-checked against calculated prospective fault levels at the installation point—overspecifying adds cost if the local fault level is lower.

5. RoHS non-compliant vs. global procurement: The unit carries no RoHS conformity marking. For projects requiring REACH/RoHS documentation or European market compliance, this variant requires substitution or a formal deviation approval; the alternate 3VA5290-7EC31-0AA0 shares this status, not a differentiating factor.

---

Poles, Rating, and Packaging Comparison

The primary unit and its parametric siblings share 90 A, lever actuation, DIN rail mounting, and 100 kA at identical specifications. The differences lie in pole count, package quantity, and approval scope.

The three-pole variant (3VA5290-7EC31-0AA0) matches the primary on approvals and packaging but omits neutral switching. For three-phase loads without neutral interruption requirement, this reduces cost and panel space. The bulk-packed alternate (3VA5290-7EC41-2AA0) suits stock-ordering for larger projects where unit packaging overhead is unwanted, though its approval coverage is limited to UL only—verify this against project jurisdiction requirements. The 2(3)-pole variant (3VA5290-7EC61-0AA0) provides a middle option where 2-pole plus switchable neutral or a third pole can be applied flexibly, though the dual designation warrants confirmation of exact pole configuration from datasheet.

---

Functional Ratings and Agency Coverage

The multi-agency listing (CCC, CE, CSA, EAC, UL489) provides broad geographic coverage for equipment destined for global markets, reducing the need for region-specific variant sourcing in many projects. The SENTRON family branding identifies this within Siemens' commercial/industrial building-protection portfolio rather than the heavier Power MC series.

---

Engineering Verification Checklist

• Confirm panel short-circuit withstand rating ≥ 100 kA at the point of installation
• Verify DIN rail clearance for 4-pole width in the selected enclosure
• Check prospective fault current calculation against 100 kA interrupt rating
• Confirm neutral switching requirement—4-pole may be unnecessary for three-phase without neutral断开
• Evaluate whether RoHS non-compliance requires deviation approval for the project
• Review alternative 3VA5290-7EC31-0AA0 if neutral pole is not required (reduces cost and space)
• Assess auxiliary contact need and budget for add-on kit if remote status is specified
• Verify local authority having jurisdiction (AHJ) accepts all five agency marks for the installation region

---