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Cutler Hammer AA21A - Thermal Overload Relay 26.3-45A

Cutler Hammer
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Cutler Hammer AA21A is a thermal overload relay designed for motor protection in industrial control circuits. It provides reliable overcurrent protection with an adjustable current range from 26.3 to 45 amps, suitable for a variety of motor loads. The relay is constructed in a compact, durable housing measuring 5.2 x 2 x 3.8 inches (L x H x W) and weighing 0.5 lb, and it complies with major industry standards including UL and CSA certification. As part of the A200 Series, this USA-made component is typically applied in motor starter assemblies, machinery, and HVAC systems to prevent motor damage from prolonged overload conditions.

Key Features & Specifications
  • Type: Thermal overload relay, Type A, manual reset
  • Current Rating: Adjustable, 26.3 - 45 Amps
  • Dimensions: 5.2 in (L) x 2 in (H) x 3.8 in (W)
  • Weight: 0.5 lb
  • Standards: UL Listed, CSA Certified
  • Applications: Motor protection in starters, industrial machinery, HVAC systems
  • Relay Style: Thermal
  • Family: A200 Series
  • Country of Origin: United States


Product Identification
  • UPC: 078667822403
  • GTIN: 00786678224039