ebm-papst K2S165-AA35-16 115V AC 165mm Rittal Cooling Fan

ebm-papst K2S165-AA35-16 115V AC Axial Cooling Fan (165mm) for Rittal Enclosures

The ebm-papst K2S165-AA35-16 is an industrial-grade, external-rotor AC axial cooling fan engineered specifically for high-static-pressure cabinet ventilation, marine electrical distribution switchboards, and OEM enclosure thermal management (most notably deployed inside Rittal TopTherm filter fan systems).

Designed around a rugged die-cast aluminum/steel housing with glass-fiber reinforced composite impellers, this 165mm unit delivers consistent volumetric airflow under continuous industrial duty cycles. The external rotor motor architecture maximizes magnetic flux efficiency while maintaining a slim axial depth, minimizing thermal resistance across densely packed switchboards, VFD cubicles, and automation racks.

Key Features

1. External Rotor Motor Topology: Direct integration of the impeller onto the rotor shell provides superior heat dissipation, compact axial dimensions, and vibration dampening.
2. Industrial Ball Bearing System: Precision greased and sealed dual ball bearings provide high L10 life expectancy exceeding 40,000 operating hours at 40°C under continuous duty.
3. Thermal Overload Protection: Integrated impedance or thermal cutoff protection protects against winding burnout during blocked-rotor conditions.
4. Direct Rittal Fitment: Exact mechanical bolt patterns and aerodynamic profile engineered as the OEM replacement core for Rittal 115V enclosure filter fan assemblies.

Industrial & Marine Applications

• Marine Switchgear & Motor Control Centers (MCC): Essential forced-air ventilation for low-voltage/medium-voltage distribution boards in ship engine control rooms (ECR).
• Automation & PLC Racks: Prevents localized hot-spots inside Allen-Bradley, Siemens, or Schneider industrial automation enclosures.
• Variable Frequency Drives (VFD): Cabinet-level exhaust cooling for heavy power converters, inverters, and braking choppers.
• Offshore & Marine Power Generation: Enclosure cooling for shipboard generator control panels subject to continuous vibration and ambient heat.

Frequently Asked Questions

Can the ebm-papst K2S165-AA35-16 be run on a 230V AC supply?

No. The K2S165-AA35-16 is strictly rated for 115V AC (100–125V AC operating window). Connecting this unit to a 230V line will cause catastrophic winding failure and trip the upstream breaker. If your enclosure supply is 230V AC, look for model series K2S165-AA75-06 or K2S165-AA17-05.

Is this fan a direct drop-in replacement for the Rittal SK 3240.110 filter fan blower?

Yes. The 165mm mounting footprint, impellor geometry, and 115V operating characteristics match the internal motorized blower installed in the Rittal SK 3240.110 filter fan series.

What is the expected service life under continuous industrial operation?

When maintained within the -25°C to +70°C operating window and free of particulate blockage, the dual-sealed precision ball bearings provide an L10 life expectancy exceeding 40,000 continuous run hours.

How is airflow direction determined on this unit?

Airflow draws intake over the mounting struts and exhausts past the external rotor. Check the directional arrows embossed on the side of the housing ring prior to torquing the chassis bolts.

What maintenance is required for marine electrical cabinet installations?

Because the motor bearings are factory-sealed and permanently lubricated, the motor requires no regreasing. Maintenance is limited to inspecting terminal connection torques during drydock or PM cycles and cleaning dust accumulation off the impeller blades to prevent dynamic unbalance.