Description
Protect mission-critical IT loads with the APC Symmetra RM SYH4K6RMT—a modular, double-conversion online UPS that grows with your business. Start at 4 kVA and scale to 6 kVA N+1 redundancy simply by adding hot-swappable power and battery modules, all while your equipment stays online.
Key benefits
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Always-on power – True double-conversion isolates equipment from surges, sags & noise.
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Scalable & redundant – Four power-module slots (2 pre-installed) deliver 4 kVA capacity today, 6 kVA N+1 tomorrow.
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Extended runtime – Add up to two extra battery packs for longer outages.
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Smart management – Built-in Network Management Card 2 with environmental monitoring and APC EcoStruxure™ readiness.
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Data-center-friendly – Only 8 U high, front-mount rails included, 89 % efficiency at full load, and quiet 60 dBA operation.
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Peace of mind – 2-year repair/replace warranty, CSA / UL 1778 compliance, and full APC global support.
| Category | Specification |
|---|---|
| SKU / Model | SYH4K6RMT |
| Topology | Double-Conversion Online |
| Power Capacity | 4 kVA / 2 800 W (scalable to 6 kVA / 4 200 W) |
| Redundancy | N+1 with hot-swappable power modules |
| Input | 208 V (configurable 208 / 240 V) | 50/60 Hz auto-sensing | NEMA L6-30P |
| Power Factor (Full Load) | 0.98 |
| Output | 208 V pure sine wave (configurable 208 / 240 V) |
| Outlets | 2 × NEMA L6-20R, 1 × NEMA L6-30R (hard-wired bypass available) |
| Max. Runtime @ Full Load | 12 min 43 s (extendable with extra battery packs) |
| Battery Type / Qty | Lead-acid; 2 × hot-swappable battery modules (2 empty slots) |
| Recharge Time | 4 h to 90 % |
| Efficiency | 89 % (AC-AC, full load) |
| Network & Alarms | 1 SmartSlot (pre-installed NMC 2); LCD panel; audible & configurable alarms; EPO port |
| Dimensions (H × W × D) | 14.02 × 19.02 × 28.74 in (35.6 × 48.3 × 73 cm) — 8 U |
| Net Weight | 229.5 lb / 104.1 kg |
| Environmental | 0 – 40 °C operating; 0 – 95 % RH (non-condensing) |
| Certifications | CSA, UL 1778, FCC Class A |
| Warranty | 2-year repair/replace (extended & on-site options available) |
| GTIN | 731304740186 |
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
