Vertiv Variable Speed FAN Controller - FTC103

Vertiv FTC103 Variable Speed Fan Controller

The Vertiv FTC103 is a variable speed fan controller designed for use with Vertiv wall-mount enclosure systems. Where the FTC101 delivers fixed-speed airflow management, the FTC103 gives you variable speed control — meaning fan RPM adjusts to actual thermal load rather than running at a constant rate. That distinction matters in deployments where heat output fluctuates and noise or power draw are factors worth managing.

Compatible Fan Assembly

The FTC103 pairs directly with the 7217WS fan assembly, which houses two 75 CFM fans. That assembly mounts across Vertiv's broad wall-mount enclosure line, so the FTC103 is a viable controller option across the following enclosure series: WMCM, WDX, WLP, NEMA, WM, WD, WE, 15WM, SR, and SRD. If you're running the 7217WS without a controller today and want to add variable speed capability, the FTC103 is the upgrade path — no new fan assembly required.

Enclosure Ecosystem Context

Vertiv's wall-mount enclosure line supports a full range of thermal and airflow accessories alongside the FTC103. Dust resistant kits (DK1 through DK4) protect fan filter assemblies across WD, WM, WMCM, and WDX series mounts. The FFK1 four-pack fan filters apply across the widest range of enclosures for routine maintenance. These accessories pair naturally with the FTC103-controlled fan setup to maintain clean, managed airflow in network enclosure deployments.

Frequently Asked Questions

Q: What is the difference between the FTC101 and the FTC103?

A: The FTC101 is a standard (fixed-speed) fan controller. The FTC103 is the variable speed variant — fan speed adjusts based on conditions rather than running at a fixed rate. Both are optional controllers for the 7217WS fan assembly.

Q: Which fan assembly does the FTC103 work with?

A: The FTC103 is compatible with the Vertiv 7217WS fan assembly, which includes two 75 CFM fans. The 7217WS is documented as compatible with WMCM, WDX, WLP, NEMA, WM, WD, and WE enclosure series.

Q: Do I need the FTC103 to run the 7217WS fan assembly?

A: No — the 7217WS fan assembly is listed as using the FTC101 or FTC103 as an optional controller. The assembly can operate without either controller; the FTC103 adds variable speed capability.

Q: Which Vertiv enclosure series support the FTC103 setup?

A: Via the 7217WS fan assembly, the FTC103 is applicable to WMCM, WDX, WLP, NEMA, WM, WD, WE, 15WM, SR, and SRD series wall-mount enclosures.

Ted Perry

The FTC103 comes up when a customer is already running the 7217WS fan assembly — two 75 CFM fans — and wants to move from the fixed-speed FTC101 to variable speed control. The upgrade case is straightforward: same fan assembly, different controller. The FTC103 gives you speed modulation rather than full-on operation regardless of enclosure temperature.

Technical Highlights:

• Variable Speed vs. Fixed: Unlike the FTC101, the FTC103 modulates fan speed — useful when thermal load varies and running fans at full speed continuously is unnecessary or too loud for the installation environment.
• 7217WS Compatibility: Documented explicitly as one of two optional controllers for the 7217WS, which delivers 150 CFM total across two fans. That's the ceiling you're managing airflow through — the FTC103 controls within that capacity.
• Broad Enclosure Coverage: The 7217WS installs across ten Vertiv wall-mount series (WMCM, WDX, WLP, NEMA, WM, WD, WE, 15WM, SR, SRD), so the FTC103 applies across a wide installed base of Vertiv enclosures.

Deployment Considerations:

• The available evidence does not include electrical ratings, dimensions, or mounting specifics for the FTC103 itself — confirm those details with Vertiv's product documentation before specifying in a design.
• The FTC103 is an optional add-on, not a requirement for the 7217WS to function. If variable speed control is not a requirement, the FTC101 is the simpler path.

Best fit for wall-mount enclosure deployments where thermal output is variable — telecommunications closets, light industrial control panels, or AV/network installations where fan noise management matters as much as cooling capacity.