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Critical Cooling motors

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The Baldor-RelianceĀ® Critical Cooling motors are designed to reliably increase uptime and decrease maintenance of critical HVAC applications in data centers, hospitals, and both commercial and industrial buildings These motors are designed for Inverter Duty with either NEMA PremiumĀ® (IE3) or ultra-premium (IE5+) efficiency levels. When used with variable speed drives, Critical Cooling motors offer the highest level of bearing protection in the industry with lifetime warranty from shaft currents.
Critical cooling motors


• Hybrid ceramic bearings installed on both ends of the motor
• Five-year motor warranty
• Lifetime warranty on bearing failures caused by shaft currents
• Suitable for inverter use per NEMA MG1 Part
• TEAO and TEFC design
• Highly efficient

• NEMA Premium®/IE3 1-30 Hp (0.75 – 22 kW)

• Ultra-premium/IE5+ 1 – 20 Hp (0.75 – 15kW)

• IP54 protection rating
• Color coded numbered leads for easy identification

Common industries

  • Data centers
  • Hospitals
  • Commercial and industrial buildings
  • Cleanrooms

Common applications

  • Variable speed applications
  • Direct drive equipment
  • Belt-driven equipment
  • HVAC systems
  • Air handling
  • Fan array
  • CRAC (computer room AC)