Vertiv PowerIT VA4N21A2 Rack Transfer Switch 20A 120V 1.9kW – Monitored
by Vertiv
Ensure redundant power protection for single-corded devices with the Vertiv PowerIT VA4N21A2 Rack Transfer Switch (RTS). Designed for 20A, 120V loads, this intelligent, horizontal 19" rackmount rPDU features 10 NEMA 5-20R outlets and dual L5-20P input plugs. It offers automated switching within 4–8ms, power monitoring, and optional environmental sensing to maintain uptime in critical IT environments. Built with fault-tolerant daisy chaining, dual Ethernet, and a local high-visibility display, it supports scalable deployment with up to 50 devices on one IP address.
| Specification | Details |
|---|---|
| Model Number | VA4N21A2 |
| Product Type | Rack Transfer Switch (Monitored, Unit Level) |
| Power Capacity | 20A, 120V, 1.9kW |
| Mounting | Horizontal 19" Rackmount (Adjustable 4-post 24"–37"; 2-post compatible) |
| Receptacle Type & Qty | (10) NEMA 5-20R |
| Plug Type | (2) NEMA L5-20P (Twistlock) |
| Transfer Time | < 4–8 milliseconds |
| Auto Power Switching | Yes (out-of-phase transfers supported) |
| Monitoring | Input power monitoring (V, A, PF, W, VA, kWh); local LED + remote |
| Network Connectivity | Dual Ethernet 10/100/1000 Mbps, Daisy Chain up to 50 devices |
| Protocols Supported | DHCP, SNMP, Modbus TCP, HTTPS, Syslog, etc. |
| Environmental Monitoring | Yes (via optional sensors; up to 16) |
| USB / Serial | USB, RS232 via RJ45 |
| Data Access Formats | CSV, JSON API, JSON datalog |
| Dimensions (HxWxD) | 1.72" x 17" x 18" (44mm x 432mm x 457mm) |
| Weight | 10 lbs (4.54 kg) |
| Finish | Black Powder Coat |
| Operating Temp | Max 60°C (140°F) |
| Warranty | 5-Year Limited (with registration) |
| Certifications | UL & c-UL 62368-1, RoHS, FCC Part 15 Class A |