Intelligent Power Distribution Units (3)
Network-managed Smart PDUs that scale from inlet-level aggregate metering to full per-outlet metering and switching. Pick the metering depth your racks need.
Sort by:
Aggregate Metering (AM)
3 categories
Inlet-level aggregate energy metering for the whole PDU.
Individual Metering (IM)
2 categories
Per-outlet energy metering across every receptacle.
Individual Metering & Switching (IMIS)
2 categories
Per-outlet metering plus per-outlet remote switching.
Feature comparison
How ES, ESS & ESS G2 compare
Every feature across the range, side by side — hover any feature name to see what it does.
| Feature | ES | ESS | ESS G2 |
|---|---|---|---|
| CB MonitoringCB MonitoringEvery input circuit breaker is watched in real time. The PDU reports whether each breaker is closed or tripped and fires an instant alert the moment one opens, naming the exact breaker and feed affected. That turns a silent loss of power into an actionable notification your team sees within seconds — not after the racks have already gone dark. | Only single phase | ||
| Daisy ChainingDaisy ChainingConnect multiple PDUs together in a chain and manage the whole group through a single network uplink and IP address. One master unit talks to the network while the rest ride the chain, so an entire row of racks is monitored and controlled as one logical system. The number shown is how many units a single connection can carry. | |||
| Electrical LogElectrical LogThe PDU records time-stamped voltage, current, power and energy readings in its own memory. That history lets you trend load growth over weeks, prove uptime against SLAs, and reconstruct exactly what the power looked like in the moments before an incident — all without a separate data collector or polling server running alongside it. | |||
| PDU LogPDU LogA rolling audit trail captures every event, alarm and user login on the unit, in order and time-stamped. You can see who connected, what settings changed and which alarms fired, and when. It is the first place to look when troubleshooting an odd reading and exactly the record auditors ask to see. | |||
| Redfish APIRedfish APIThe PDU exposes the DMTF Redfish REST API — the modern, vendor-neutral standard for data-centre hardware. DCIM platforms and automation scripts read telemetry and issue commands over plain HTTPS and JSON, so the PDU drops into existing tooling without custom drivers or proprietary connectors, and stays interoperable as your stack evolves. | |||
| SSHSSHSecure Shell gives administrators and scripts an encrypted command line into the PDU over the network. Status can be queried and settings changed remotely while credentials and traffic stay protected end to end — the standard, secure way to manage infrastructure at scale instead of exposing an open console. | |||
| Sensor CascadingSensor CascadingA single sensor port drives a whole chain of environmental probes rather than just one. Temperature, humidity, door-position, smoke and leak sensors daisy-chain off one PDU, so an entire rack's environment is covered from a single unit — no extra gateways, no separate monitoring appliance. | |||
| Modbus RTUModbus RTUSerial Modbus over RS-485 lets the PDU talk to building-management systems and older DCIM or SCADA gear that expect a fieldbus. Where an Ethernet-based protocol simply isn't an option, Modbus RTU bridges the PDU's readings into that existing infrastructure over a robust two-wire link. | Optional (V3) | — | |
| TLS 1.2 / 1.3TLS 1.2 / 1.3All web-UI and API traffic is encrypted with modern TLS (1.2 and 1.3). Management sessions, passwords and telemetry travel over an authenticated, encrypted channel, so credentials can't be sniffed on the management network — satisfying the security-hardening rules most data centres now enforce. | |||
| Residual Current MonitoringResidual Current MonitoringThe PDU continuously measures residual (earth-leakage) current on the supply — RCM type A or B depending on the model. A slow rise in leakage is an early sign of failing insulation, so you can schedule maintenance on your terms instead of waiting for a protective device to trip and drop the whole load without warning. | — | Optional | Optional |
| Input HarmonicsInput HarmonicsThe PDU measures total harmonic distortion (THD) and the individual harmonic content on the input feed. Harmonics quietly overheat transformers and neutral conductors and shorten the life of connected equipment; seeing them lets you spot power-quality problems and act before they cause real damage downstream. | — | Optional | Optional |
| Sensor SupportSensor SupportThe PDU accepts a full set of environmental sensors — TH sensor, door position, smoke detection, water-leak detection. One unit therefore watches the conditions that most often precede an outage: rising heat, humidity swings, an open door, smoke, or a coolant leak. Alarms fire while the problem is still small, giving you time to react before it becomes downtime. | |||
| JSON-RPCJSON-RPCA lightweight JSON-RPC interface exposes the PDU to scripts and custom tools. It's an easy, low-overhead way to automate reads and control actions from in-house code — handy when you want quick integration without adopting a heavier framework or SDK. | |||
| Power Sharing Over PortPower Sharing Over PortThe cascade port carries power as well as data. A downstream PDU or a sensor hub can draw what it needs straight from the chain, so you don't have to run a separate supply to every linked device — fewer power bricks, cleaner cabling and one less thing to fail between units. | — | — |
Connectivity & ports
Ports & connectivity by series
The physical ports and on-board connectivity available on each controller.
ES
- Load indicator LED
- User interactive display for local access
- Gigabit Ethernet port10/100/1000
- Sensor portTemperature/Humidity, door position, smoke detection, water detection
- RS485 portNetwork port sharing up to 16 PDUs
- Ethernet port10/100
- USB-AFirmware upgrades, Mass configuration
ESS
- Load indicator LED
- User interactive display for local access
- Gigabit Ethernet port10/100/1000
- Ethernet port10/100
- USB-AFirmware upgrades, Mass configuration
- Sensor portTemperature/Humidity, door position, smoke detection, water detection, air flow
ESS G2
- Load indicator LED
- User interactive display for local access
- USB-CFuture proof, Console port
- 2X Gigabit Ethernet port10/100/1000
- USB-AFirmware upgrades, Mass configuration
- Sensor portTemperature/Humidity, door position, smoke detection, water detection, air flow
- Feature portPower sharing