Server Technology C4W36RA-DQBD2FE1 Switched Rack PDU

Overview

The Server Technology C4W36RA-DQBD2FE1 is a 3-phase switched rack PDU rated for 17.3kW at 208V, built for data center and colocation racks where per-outlet control and circuit-level visibility matter more than a basic power strip. It draws on a 208V Delta 60A IEC 60309 3P+G 9Hr input plug and distributes power across 36 total outlets — 12 C13 and 24 HDOT Cx positions — enough density to power a fully populated server rack, network switches, and out-of-band management gear from a single vertical unit. C4W36RA-DQBD2FE1 (often searched as C4W36RA DQBD2FE1) is built around Server Technology's PRO4X switched platform, which means every outlet can be individually switched on/off and monitored rather than treated as a single aggregate load.

Key Features

• HDOT Cx Outlets (24x): Cx is a UL-tested hybrid outlet that accepts both C14 and C20 plugs, so you're not locked into matching cord types across every device in the rack — a real time-saver when a rack mixes 1U servers and higher-draw switches.
• 12x C13 Outlets: Standard C13 positions cover the bulk of typical server and network appliance power cords without needing adapters.
• 45-Degree Angled Infeed: The angled input improves accessibility in tight cable trays, adds strain relief, and its bend radius is sized for 60A-rated cords — reduces stress on the inlet connector over years of rack service.
• Per-Inlet Power Sensing (PIPS): Monitors current, voltage, power, apparent power, crest factor, and power factor at the inlet — gives facilities teams the data to catch overloaded circuits before a breaker trips.
• Power Quality Measurements: Tracks harmonics, voltage dips and swells, and crest factor at the outlet or load level — useful for diagnosing intermittent equipment faults tied to dirty power rather than hardware failure.
• Waveform Capture: Captures voltage and current waveforms automatically or on demand, which shortens root-cause analysis when a power event trips an alarm.
• Branch Circuit Protection (UL489 2-pole, 20A): Each branch is individually protected, so a fault on one outlet group doesn't take down the whole PDU — isolates the blast radius of a short or overload.
• Multi-Unit Linking & Cascading: Daisy-chain up to 16 PDUs from a primary unit over a single USB or Ethernet connection and one IP address — cuts down on the number of network drops and IP addresses needed per row.
• Dual Gigabit Ethernet (10/100/1000 Mbps): Two ports support redundant network paths or a management/cascade split, reducing single points of failure for remote monitoring.
• Environmental Monitoring: Supports up to 12 daisy-chained DX2-series SmartSensors with SNMP alerts and email notifications — lets you tie temperature/humidity sensing into the same monitoring path as power data.
• Hot-Swappable Controller: The controller — housing compute, display, and connectivity — can be replaced without powering down the outlet bus, which matters when you can't schedule a maintenance window on a live rack.
• RamLock Locking Outlets: A mechanical lock secures C14 and C20 plugs in place, cutting down on accidental disconnects in racks with frequent cable churn.

Integration & Compatibility

Network access covers HTTP(S), SSH, Telnet, SNMP, (S)FTP, SMTP, Syslog, LDAP(S), and RS-232 serial — enough protocol coverage to fit into most existing data center monitoring stacks without a dedicated gateway. Input measurement accuracy is rated at ±0.2% for both voltage and current on input and output, which is tight enough for billing-grade or SLA-driven power reporting in colocation environments. Operating range is 0°C to 60°C at 5–90% RH, and storage extends to -40°C to 85°C — wide enough for most data center and edge computing environments outlined in Server Technology's Server Technology catalog. For planning a full rack power budget, see this site's power and PoE planning guide. This unit belongs in the broader power supplies and PDU category, and pairs naturally with rack network switches and structured cabling hardware in the same cabinet. If you're comparing 3-phase options across a multi-rack deployment, review Server Technology's infrastructure architecture guide before standardizing on a single PDU model.

Frequently Asked Questions

Q: What is the input configuration on the C4W36RA-DQBD2FE1?

A: It uses a 208V Delta 60A IEC 60309 3P+G 9Hr plug, rated for 60A input current with a 48A rated current draw and 17.3kW input capacity.

Q: How many outlets does the C4W36RA-DQBD2FE1 have?

A: 36 total: 12 C13 outlets plus 24 HDOT Cx outlets that accept both C14 and C20 plugs.

Q: Can I monitor individual outlets remotely?

A: Yes. It supports Per-Inlet Power Sensing (PIPS) and outlet-level power quality measurements, accessible via HTTP(S), SSH, SNMP, Telnet, and several other network protocols through its two Gigabit Ethernet ports.

Q: What is the branch circuit protection rating?

A: UL489 2-pole branch circuit protection at 20A per branch, with a 10 kAIC interrupt rating.

Q: What are the operating temperature and humidity limits?

A: Operating range is 0°C to 60°C at 5% to 90% RH; storage range is -40°C to 85°C at 20% to 90% RH.

Q: Can multiple C4W36RA-DQBD2FE1 units be linked together?

A: Yes, up to 16 PDUs can be daisy-chained from a primary unit using a single USB or Ethernet connection and one IP address.

Karl Wilson

What stands out on the C4W36RA-DQBD2FE1 is the outlet density-to-footprint ratio: 36 total outlets (12 C13 + 24 HDOT Cx) off a single 60A 208V Delta 3-phase feed, in a 70-inch vertical form factor that's only 2.2 x 2.5 inches in cross-section. That's a lot of switched, monitored capacity for the rack space it actually consumes.

Technical Highlights:

• 17.3kW input capacity at 48A rated current: gives real headroom over typical mixed server/switch loads in a single rack without tripping into the 60A max input rating.
• ±0.2% measurement accuracy (input and output, voltage and current): tight enough that the power data this PDU reports can be used for real capacity planning, not just rough alerting.
• UL489 20A branch protection with 10 kAIC interrupt rating: isolates faults at the branch level instead of risking a whole-PDU trip, which matters when 36 outlets' worth of gear share the same unit.

Deployment Considerations:

• The 208V Delta 60A IEC 60309 3P+G 9Hr plug is a specific connector — confirm your rack's whip and receptacle match before ordering, since 3-phase infeeds aren't interchangeable across configurations.
• Dual Gigabit Ethernet ports are useful for redundant monitoring paths, but if you're cascading up to 16 units per IP, plan your IP addressing and VLAN segmentation before the rack build, not after.

This is the right call for a colocation or hyperscale row where you need per-outlet switching and billing-grade power accuracy on a dense multi-phase rack, not a single-server closet deployment where a basic PDU would do the job for less.