Description
The Eaton SPD Max Series Surge Protection Device is engineered to deliver high-capacity, enterprise-grade protection for critical electrical systems. Designed for demanding commercial and industrial environments, this solution provides 400 kA per phase surge protection with a robust dual-module architecture, ensuring superior performance against transient voltage events.
Built for 277/480V Wye (4W+G) systems, this SPD safeguards sensitive equipment, reduces downtime, and enhances operational continuity. The integrated surge counter enables real-time monitoring of surge activity, while the NEMA 4 enclosure with an internal circuit breaker ensures durability and protection in harsh environments. With industry-leading reliability and extended warranty coverage, the Eaton SPD Max Series is an essential component for resilient power infrastructure.
| Specification | Details |
|---|---|
| Brand | Eaton |
| Product Type | Surge Protection Device |
| Series | SPD Max Series |
| Catalog Number | SPM400480Y3S |
| Surge Current Capacity | 400 kA per phase |
| Configuration | Two-module design |
| Voltage Rating | 277/480V Wye (4W+G) |
| Enclosure Type | NEMA 4 |
| Circuit Protection | Internal circuit breaker included |
| Monitoring Feature | Integrated surge counter |
| Compliance | RoHS compliant |
| Certifications | UL 1449, UL 1283, CSA Electrical Notice No. 516, CSA Std. C22.2 No. 8 |
| Dimensions (L x W x H) | 9.3 in x 14.91 in x 17.5 in |
| Product Weight | 50 lb |
| Warranty | 15 years standard, 20 years with registration |
| Application | Commercial and industrial power protection |
Payment & Security
Your payment information is processed securely, and we do not store credit card details or access your credit card information.
Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
From Scope to Sign-Off
A structured delivery process designed to reduce risk and keep projects moving.
Plan
Discovery, site review, requirements gathering, and project alignment. We define scope, constraints, and success criteria before any design work begins.
- Discovery calls & stakeholder interviews
- On-site survey & infrastructure review
- Requirements & use-case documentation
- Project scope, timeline & milestone alignment
Engineer
System design, schematics, signal flow, BOM development, and documentation. Every project leaves this phase with a complete engineering package.
- AV system design & signal flow diagrams
- Equipment selection & BOM development
- Rack layout & control system design
- As-built documentation package
Deploy
Procurement, logistics, installation, programming, commissioning, and training. We own the delivery from first shipment to final handoff.
- Authorized procurement & logistics coordination
- Physical installation & cable management
- Control system programming & configuration
- Commissioning, testing & end-user training
Support
Monitoring, maintenance, lifecycle planning, and long-term service agreements. We stay engaged long after project close.
- 24/7 remote system monitoring
- Preventive & reactive maintenance
- Technology lifecycle & refresh planning
- Long-term service level agreements
A decade of delivery — trusted by 275+ clients across industries
