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Westinghouse 8SPB300 - Rating Plug 300A (SPB Series)

Westinghouse
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Westinghouse 8SPB300 Circuit Breaker The Westinghouse 8SPB300 is a 300 amp rating plug designed for use with Pow-R Trip and Pow-R Trip 7 trip units on Westinghouse SPB series circuit breakers. This rating plug facilitates precise current rating settings for the trip unit, ensuring reliable circuit protection and coordination within the SPB breaker family. It is compatible specifically with SPB-50 and SPB-100 frames, enabling accurate trip unit adjustments for 800A frame size breakers. The component weighs 1 lb and is constructed as a Type SPB accessory for insulated case circuit breakers.

Key Features & Specifications
  • Manufacturer: Westinghouse
  • Part Number: 8SPB300
  • Type: Rating Plug
  • Family: SPB Series
  • Amperage Rating: 300A
  • Compatible Trip Units: Pow-R Trip and Pow-R Trip 7
  • Breaker Frame Size: 800A SPB
  • Compatible Frames: SPB-50, SPB-100
  • Application: Rating plug for circuit breaker trip unit
  • Mounting: Used within SPB breaker assembly
  • Weight: 1 lb