Eaton 5S700 700VA / 420W Standby UPS
- VA
- 700
- Watts
- 420
- Form
- Tower
- Topology
- Standby
- Outlets
- 8× NEMA 5-15R
Eaton standby UPS — 3S 550–700 VA and Ellipse ECO 500–1600 VA tower. The Eaton entry tier for desktop, modem, router, point-of-sale, and small-office electronics.
Standby (offline) UPS topology runs the load directly from utility power and switches to battery only during an outage or out-of-tolerance event. Transfer time typically 6–10 ms. Simplest topology, lowest cost, right fit for desktop, point-of-sale, small networking, security DVR, modem and router.
Eaton's standby tier covers the 3S series (550 / 700 VA tower) and the Ellipse ECO line (500–1600 VA tower with surge-only outlets). UPSPLUSBATTERY.CA stocks the line with matching Eaton replacement batteries. For server and pure-sine requirements, step up to Eaton line-interactive UPS (5P / 5PX). Full Eaton catalog at Eaton UPS.
| Series | VA range | Use | Output |
|---|---|---|---|
| 3S | 550 / 700 VA | Desktop, modem, router, small POS | (6) NEMA 5-15R or (4) IEC C13 + 4 surge |
| Ellipse ECO | 500 – 1600 VA | Workstation, home office, small AV | 4–8 IEC outlets, surge + battery |
All ship with USB shutdown port and simulated sine wave output on battery. Outlets typically split between battery-backed and surge-only. UL listed, RoHS compliant.
Standby is fine when utility is reasonably clean and load tolerates 6–10 ms transfer. Line-interactive (Eaton 5P, 5PX) adds AVR — boosts low voltage and bucks high voltage without going to battery, extending battery life. Topology comparison.
Add nameplate watts of every load, multiply by 1.25 buffer, pick UPS whose watt rating exceeds. Modem + router + small NAS ~50 W → 3S 550 with headroom. Workstation + 24" monitor ~120 W → Ellipse ECO 1200. UPS sizing guide.
3S and Ellipse ECO produce simulated (stepped-square) sine wave on battery. Acceptable for switching power supplies on desktops, monitors, modems, routers, switches, NVRs. Not appropriate for active-PFC server PSUs, lab instrumentation, medical equipment, or motors with high inrush.
| Model | Power | Outlets | Replacement battery |
|---|---|---|---|
| 3S550 | 550 VA / 330 W | (6) NEMA 5-15R, surge + battery | 3S Battery (Eaton P/N) |
| 3S700 | 700 VA / 420 W | (6) NEMA 5-15R, surge + battery | 3S Battery (Eaton P/N) |
| Ellipse ECO 800 IEC | 800 VA / 500 W | (4) IEC C13 | Ellipse ECO battery |
| Ellipse ECO 1600 IEC | 1600 VA / 1000 W | (8) IEC C13 | Ellipse ECO battery |
USB cable included for shutdown integration with Windows, macOS, Linux. Front-panel LED indicators on 3S; LCD on most Ellipse ECO models.
3S and Ellipse ECO use Eaton-spec internal SLA cartridges. Aftermarket replacements stocked as compatible — built to identical V, Ah, terminal, and connector spec. 1-year UPSPLUSBATTERY warranty. Browse Eaton replacement batteries.
All standby plug-and-play on standard NEMA 5-15P (3S, NA Ellipse) or IEC C14 (Ellipse IEC variants). Manufacturer warranty (USA and Canada) typically 2 years on 3S and Ellipse ECO. Coordinated through our Canadian team. Shipped from our Canadian warehouse. Replies within 1 business day.
Generally no. 3S and Ellipse ECO produce simulated sine on battery and have 6–10 ms transfer. For any server or NAS use 5P, 5PX, 9SX, or 9PX.
Stock runtime 5–15 minutes at half load depending on model. 3S and Ellipse ECO do not accept external battery packs.
Yes. Tool-less or screw-fastened battery door. How to install UPS battery.
Yes — ships with USB cable. Compatible with Eaton Intelligent Power Protector (IPP) free download — Windows, Linux, macOS. NUT compatible.
Most 3S and Ellipse ECO include 2–4 surge-only outlets in addition to battery-backed.
3–5 years SLA in 20–25 °C climate-controlled.
Yes — Eaton 3S and Ellipse ECO warranty covers USA and Canada. RMA does not require cross-border shipping.
Eaton standby UPS systems offer essential battery backup and surge protection for home offices, workstations, and non-critical equipment at an accessible price point. Eaton's standby units are known for their compact footprint and reliable performance in light commercial and home office environments.
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Our Canadian team has specified APC, Eaton, Tripp Lite, Vertiv, Mitsubishi, Toshiba, CyberPower, XPC, and Delta UPS for healthcare, data centres, and government. Enquiries answered in business hours.