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Cutler Hammer AA43PB - Thermal Overload Relay 19-135A (NEMA A200)

Cutler Hammer
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Cutler Hammer AA43PB is a NEMA A200 three-pole thermal overload relay designed for motor protection in industrial applications, providing reliable Class 20 trip characteristics to safeguard motors from sustained overcurrent conditions. This panel-mounted device operates with an amperage range of 19 to 135 A and features one normally closed auxiliary contact for alarm signaling, with an interrupt rating of 100 kA. The relay measures 8.3 in x 5 in x 6.1 in (Length/Depth x Height x Width) and weighs 2.4 lb, constructed as a robust thermal-type unit with ambient compensation for demanding environments. It is UL Listed and CSA Certified, ensuring compliance with North American safety and performance standards. Typical applications include motor control in manufacturing, processing, and heavy machinery systems where precise overload protection is required.

Key Features & Specifications
  • Type: NEMA A200 Thermal Overload Relay
  • Poles: 3
  • Mounting: Panel Mount
  • Class: 20
  • Contacts: 1NC Auxiliary (Form C)
  • Interrupt Rating: 100 kA
  • Relay Style: Thermal
  • Amperage Minimum: 19 A
  • Amperage Maximum: 135 A
  • Certification: CSA Certified, UL Listed
  • Country of Origin: United States


Product Identification
  • UPC: 782114185544
  • GTIN: 00782114000000