APC Back-UPS CS 350VA - BK350 - Standby UPS, 120 V, Tower, Step Wave, 120 V AC, NEMA 5-15P, Back-UPS CS, 23.70 Minute, 6.60 Minute, 350 VA
- VA
- 350
- Watts
- 210
- Form
- Tower
- Topology
- Standby
- Outlets
- 3× NEMA 5-15R
General-purpose APC UPS for office, retail, and small business — Back-UPS Pro, Smart-UPS C (SMC), Smart-UPS (SMT), Smart-UPS X (SMX). 700 VA to 3 kVA on 120 V. AVR, pure sine on Smart-UPS, USB / SNMP, 3-year factory warranty (USA & Canada).
The general-purpose tier covers any APC UPS that doesn't sit at the extremes of the catalog — not entry-only Back-UPS standby, not three-phase Galaxy industrial, not high-density Symmetra modular, not medical-grade SRT online. The middle: workstation-to-small-server, retail back-of-house, branch-office IT, point-of-sale, AV equipment, security DVR. The vast majority of APC purchases land here.
UPSPLUSBATTERY.CA stocks the general-purpose range from Back-UPS Pro through Smart-UPS X with matching APCRBC replacement batteries. For the topology-specific browse pages see APC line-interactive UPS, APC double-conversion online UPS, and APC standby UPS. Full APC catalog at APC UPS.
| Family | VA range | Topology | Form factor | Typical use |
|---|---|---|---|---|
| Back-UPS Pro (BR / BX) | 900 – 1500 VA | Line-interactive | Tower | Workstation, gaming PC, small AV |
| Smart-UPS C (SMC) | 1000 – 3000 VA | Line-interactive | Tower or 2U rack | Branch IT, single-server office, retail back-of-house |
| Smart-UPS (SMT) | 750 – 3000 VA | Line-interactive | Tower, 2U rack, convertible | Server rack, network closet, mid-office IT |
| Smart-UPS X (SMX) | 750 – 3000 VA | Line-interactive, extended runtime | Convertible 4U | Dense closet, extended-runtime requirement |
For most general-purpose deployments the shortlist is SMC or SMT. Step up to SMX when stock runtime is insufficient and external battery packs are needed.
Single workstation, gaming PC, modem/router/AV — Back-UPS Pro BR or BX (900–1500 VA, line-interactive, AVR). Office or branch with a single server, small NAS, switch — Smart-UPS C SMC1000-2UC or SMC1500-2UC (entry server tier with SmartConnect cloud monitoring). Server rack with 2+ servers, switch, storage — Smart-UPS SMT1500RM2UC or SMT2200RMI2U (full-featured business workhorse). Extended runtime — Smart-UPS X SMX2200HV with XLBP packs.
Add nameplate watts of all loads, multiply by 1.25 buffer, pick UPS whose watt rating exceeds. Workstation + dual monitor + dock ~250 W → BR1500G (865 W) with headroom. 1U server + switch + NAS ~520 W → SMT1000 (700 W) marginal, SMT1500RM2UC (1000 W) better. Two 1U servers + switch + storage ~800 W → SMT1500 / SMC1500-2UC. Sizing guide.
SmartConnect (SMC -2UC variants, SMT1500C) provides cloud-based UPS health and event reporting from any browser without installing software. PowerChute Business Edition (full SMT line) provides VMware / Hyper-V shutdown automation, scheduled self-tests, and SNMP integration via the AP9641 NMC. Choose SmartConnect for simple visibility; PowerChute + AP9641 for managed environments.
| Model | Power | Topology | Form factor | Replacement battery |
|---|---|---|---|---|
| BR1500G | 1500 VA / 865 W | Line-interactive | Tower | APCRBC124 |
| SMC1000-2UC | 1000 VA / 600 W | Line-interactive | 2U rack/tower | APCRBC132 |
| SMC1500-2UC | 1500 VA / 900 W | Line-interactive | 2U rack/tower | APCRBC133 |
| SMT1500RM2UC | 1500 VA / 1000 W | Line-interactive | 2U rack/tower | APCRBC133 |
| SMT2200RMI2U | 2200 VA / 1980 W | Line-interactive | 2U rack/tower | RBC43 |
| SMT3000RMI2U | 3000 VA / 2700 W | Line-interactive | 2U rack/tower | RBC43 |
| SMX2200HV | 2200 VA / 1980 W | Line-interactive, extended runtime | Rack/tower convertible | APCRBC143 |
Cartridge spec is on the unit label and listed in the user manual. We stock both genuine APC and compatible aftermarket equivalents — same V, Ah, terminal, and connector spec as factory cells. 1-year UPSPLUSBATTERY warranty on aftermarket. APC RBC batteries collection.
Up to 1500 VA: NEMA 5-15P plug-and-play. 2200 / 3000 VA: typically L5-30P or NEMA 5-20P. Warranty (USA and Canada): 3 years electronics + 2 years battery on Smart-UPS SMT, SMX, SMC; 3 years on Back-UPS Pro. Coordinated through our Canadian team. Shipped from our Canadian warehouse — see shipping policy for rates and timing. Replies within 1 business day.
SMT1500RM2UC (1500 VA / 1000 W, 2U rack, NEMA 5-15P) is the workhorse for Canadian SMB server closets — fits standard 19-inch racks, covers one or two 1U servers plus a switch, and uses the widely-available APCRBC133 replacement cartridge.
SMC = entry-tier, pure sine, simpler firmware. SMT = full-featured, supports AP9641 NMC, deeper PowerChute integration, longer feature list. For a single-server office, SMC is sufficient. For a managed rack with VMware / Hyper-V automation, choose SMT.
Yes on every current Smart-UPS C, Smart-UPS, Smart-UPS X, and Back-UPS Pro. Cartridge swaps in under 5 minutes while UPS continues to protect the load. Reset install date via front panel afterward.
SMX accepts XLBP external packs. SMT and SMC do not. If extended runtime needed in SMT VA range, step up to SMX equivalent.
SMT and SMX have SmartSlot bay accepting AP9641 Network Management Card 3 — SNMP v1/v2c/v3, web management, integration with VMware / Hyper-V / Linux / Windows. SMC -2UC variants ship with SmartConnect cloud monitoring built-in.
SLA 3–5 years climate-controlled. Replace promptly when PowerChute or front-panel flags battery. When to replace UPS battery.
Yes — APC general-purpose family factory warranty terms cover USA and Canada. RMA does not require cross-border shipping. Shipped from our Canadian warehouse.
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.