Vertiv VS3750 42U 7kW Integrated Cooling SmartCabinet
Overview
The Vertiv VS3750 is a 42U self-contained rack system with 7.0kW of integrated cooling capacity — purpose-built for edge deployments, remote equipment rooms, and satellite IT closets where installing a dedicated CRAC unit or precision cooling row is not practical. Rather than relying on ambient room air, the VS3750 manages its own thermal environment using a sealed R410A refrigerant circuit and 1,500 m³/h (882.9 CFM) of internal airflow, keeping IT loads within operating limits regardless of conditions in the surrounding room. For engineers planning network enclosures in warehouse edges, unmanned telecom rooms, or factory floors, this eliminates the dependency on building HVAC sizing — a meaningful constraint in retrofit and edge projects.
Key Features
- 7.0kW Cooling Capacity (23.9 kBtuh): Handles a fully loaded 42U cabinet's thermal output in a single self-contained unit. At double the capacity of the 3.5kW VS3350 variant, this is the correct model when your IT load density exceeds roughly 3–4kW and you cannot rely on supplemental room cooling.
- 1,500 m³/h (882.9 CFM) Airflow: Twice the internal air movement of the 24U model. High-density switch and server loads produce non-uniform heat — this airflow rate supports consistent hot-spot suppression across a fully populated 42U chassis without dead zones.
- 0–100% Capacity Modulation: The cooling compressor scales continuously rather than cycling on/off at fixed stages. In lightly loaded or transitional states, this prevents overcooling and compressor wear from short-cycling — relevant when your rack load varies across shifts or seasonal demand.
- R410A Refrigerant Circuit: The sealed DX refrigerant loop rejects heat to the surrounding environment without requiring chilled water, glycol piping, or a raised floor. Installation requires an electrical connection and a condensate drain — no HVAC coordination beyond that.
- iCOM™ Edge Controls and Monitoring: Onboard controller provides real-time thermal telemetry, alarm management, and remote connectivity. Integrators deploying UPS and power distribution alongside this unit can pull environmental data into a common monitoring stack without adding separate sensors.
- IP54 Protection Rating: Dust-partial and splash-resistant enclosure. Appropriate for industrial edges, light manufacturing, and warehouse environments where ambient dust or occasional moisture is present — not rated for outdoor exposure or wash-down environments.
- UL / CE, RoHS, ISTA 3B Certified: UL and CE cover safety and EMC for North American and European deployments. ISTA 3B certification validates the unit survived transit stress testing — less obvious but relevant if the cabinet ships pre-loaded to a remote site.
- Liebert GXT5 UPS and Geist rPDU Integration: Factory-matched power options mean you can spec a complete power-protect-cool stack from a single product family, reducing compatibility validation work and simplifying service escalation. Review the full Vertiv product line to match UPS sizing to your load.
Integration and Compatibility
The VS3750 is designed around a 208–230V single-phase 60Hz supply at the 42U / 7kW configuration. Confirm your local circuit can supply sufficient amperage before ordering — a 7kW cooling load plus IT equipment draws will typically require a 30A or larger dedicated circuit. For structured planning, consult a data center cooling selection resource to validate cooling-to-IT-load ratios for your site. The VS3750 weighs 661.4 lb (300 kg) fully assembled; floor load capacity must be confirmed in advance for any elevated or mezzanine installation.
Frequently Asked Questions
Q: What is the cooling capacity of the VS3750, and how does it compare to the smaller SmartCabinet models?
A: The VS3750 delivers 7.0kW (23.9 kBtuh) of integrated cooling — exactly double the 3.5kW output of the VS3354 and VS3350 variants. It also provides 1,500 m³/h (882.9 CFM) of internal airflow versus 750 m³/h on the 3.5kW models, making it the correct selection when IT load density exceeds approximately 3–4kW in a 42U footprint.
Q: Does the VS3750 require a dedicated chilled water supply or raised floor?
A: No. The VS3750 uses a sealed R410A refrigerant circuit for heat rejection — no chilled water, glycol loop, or raised floor plenum is required. Primary installation dependencies are a 208–230V/1Ph/60Hz electrical circuit and a condensate drain path.
Q: What is the IP rating on the VS3750, and is it suitable for light industrial or warehouse environments?
A: The VS3750 carries an IP54 rating, which covers partial dust ingress protection and splash resistance from any direction. It is appropriate for light industrial, warehouse-edge, and factory-floor IT closets with ambient dust and occasional moisture — it is not rated for outdoor installation or wash-down conditions.
Q: What monitoring and control system is included with the VS3750?
A: The VS3750 ships with iCOM™ Edge onboard controls, which handle real-time thermal monitoring, alarm management, and remote connectivity. This allows the unit to feed environmental telemetry into broader infrastructure monitoring platforms without requiring separate sensors or third-party controllers.
Q: Can the VS3750 be integrated with a UPS or intelligent PDU?
A: Yes. Vertiv lists the Liebert® GXT5 UPS and Geist™ rPDU as validated key options for the VS3750 platform. These are factory-matched integrations, which reduces compatibility validation effort when building a complete power-protect-cool stack for an edge site.
Q: What certifications does the VS3750 hold?
A: The VS3750 carries UL and CE certifications (safety and EMC for North American and European deployments), RoHS compliance, and ISTA 3B transit testing certification.
The VS3750 is the model I recommend when a site has a confirmed 42U IT load above 4kW and no realistic path to a dedicated precision cooling unit — the 7.0kW integrated DX circuit covers the full thermal envelope without any HVAC coordination, which cuts weeks off a remote-site deployment schedule. The 1,500 m³/h airflow figure is not marketing headroom; it is what you need to suppress hot spots across a fully loaded high-density switch and server configuration at this rack depth.
Technical Highlights:
- 7.0kW / 23.9 kBtuh Cooling: Sized for dense 42U loads — roughly twice what the 3.5kW VS3350 handles. If your calculated IT load is 5–6kW with room for growth, this is the tier to buy, not an oversized 3.5kW unit running at its ceiling.
- 0–100% Continuous Capacity Modulation: Avoids the short-cycling compressor wear that comes with staged on/off cooling. In edge sites where load varies between business hours and off-hours, this extends compressor service life meaningfully.
- IP54 Enclosure: Dust-partial and splash-rated — the specification that makes this deployable on a warehouse floor or light manufacturing edge without an additional protective enclosure around the cabinet itself.
Deployment Considerations:
- At 300 kg (661.4 lb) assembled, floor load capacity is a hard prerequisite — verify this before committing the unit to a mezzanine, raised platform, or older facility with unknown slab ratings.
- The 208–230V/1Ph/60Hz input means this does not run on a standard 120V branch circuit. A dedicated 30A or larger single-phase circuit is typically required; confirm with your electrician before the unit ships.
This cabinet is best positioned for unmanned telecom rooms, warehouse-edge server closets, and remote branch sites where conditioning the entire room is cost-prohibitive and a self-contained thermal solution is the only practical path to keeping IT loads within operating spec.
