Legrand (USystems ColdLogik)

Legrand's data center arm sells USystems ColdLogik rear-door coolers, passive and active, rated up to 200 kW per rack on the CL23 HPC model.

Rear door HQ Limoges, France Owned by Legrand Checked 9 Nov 2026

Max per rack: 200 kW Legrand data center cooling, 9 Nov 2026
Rear door: 200 kW Legrand data center cooling, 9 Nov 2026

Rating conditions

Up to 200 kW per rack (CL23). CL20 maximum duty 93 kW with 14°C inlet water (6-fan).

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Datasheet

Source on every value

Technologies Liquid cooling product types the vendor sells today. 'Liquid-to-air CDU' is a sidecar unit or heat dissipation unit that needs no facility water. 'Two-phase cold plate' boils a refrigerant or dielectric on the chip.: Rear door 1
Smallest CDU kW Rated cooling capacity of the smallest shipping CDU in the line, as the vendor publishes it. Rating conditions (approach temperature, fluid) are in the spec notes. Blank when not published.: Not published
Largest CDU kW Rated cooling capacity of the largest shipping CDU, as the vendor publishes it. Prototypes and announced-only units are left out and named in the spec notes. Blank when not published.: Not published
GPU platforms (vendor-stated) GPU or rack platforms the vendor itself names as supported, certified or targeted, such as NVIDIA GB200 NVL72 or Vera Rubin. Vendor statements only, each with a source. Blank when the vendor names none.: Not published
Level Where the products sit: in the server, in the rack, in the row, or at facility scale (skid or facility distribution unit).: In-rack 1
Coolant Coolant on the IT side: water-glycol (PG25 and similar), single-phase dielectric (oils, GTL, synthetic hydrocarbons) or two-phase dielectric or refrigerant.: Water-glycol 1
Max per rack kW Highest rack density the vendor publishes for its own system (immersion tank, in-rack CDU, rear door or OEM rack). Filled only when the vendor states a per-rack figure.: 200 1
Rear door max kW Highest published heat removal of the vendor's rear-door heat exchanger, per rack.: 200 1
Vendor type Liquid cooling specialist, thermal and HVAC major, power and data center infrastructure major, server OEM, component maker (cold plates, connectors, CDUs sold to OEMs) or fluid supplier.: Power and infrastructure major 1
Parent company Owner or controlling shareholder when the vendor sits inside a larger group, such as CoolIT under Ecolab or Motivair under Schneider Electric.: Legrand 1
HQ region Region of the vendor's (or brand owner's) headquarters.: Europe 1
HQ country Country of the vendor's (or brand owner's) headquarters.: France 1
Headquarters Headquarters city and country as the vendor states it.: Limoges, France 1
Manufacturing Regions or sites where the vendor says it builds liquid cooling products. Blank when not published.: Not published
Key products Main product lines and model names for data center liquid cooling.: ColdLogik CL20 ProActive, CL21 Smart Passive, CL23 HPC rear-door coolers 1
Spec notes Rating conditions behind the numbers (approach temperature, water temperature, fluid), conflicting figures, and prototypes left out of the ranges.: Up to 200 kW per rack (CL23). CL20 maximum duty 93 kW with 14°C inlet water (6-fan). 1

Sources

Legrand data center cooling accessed 2026-11-09
ColdLogik CL20 datasheet accessed 2026-11-09

Legrand alternatives

Largest CDU

Motivair by Schneider Electric 2,500 kW1
nVent 2,000 kW1
Dell Technologies (PowerCool) CDU, Cold plate, Rear door, Server OEM

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