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Siemens 3VA9978-0BB20 - Under Voltage Release 24 VAC

Siemens
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Siemens 3VA9978-0BB20 is an Under Voltage Release accessory for the Sentron Series 3VA circuit breakers, designed to automatically trip the breaker when the control voltage drops below a specified threshold. This unit operates with a maximum control voltage of 24 VAC and is rated for a temperature range of -13°F to 158°F (-25°C to 70°C). The component weighs 5 lb and is constructed for direct integration into compatible 3VA frames, ensuring reliable protection in industrial power distribution systems. It is UL Listed and certified, meeting stringent safety and performance standards for electrical installations. Typical applications include motor control centers, switchboards, and distribution panels where undervoltage protection is critical to prevent equipment damage or unsafe operation.

Key Features & Specifications
  • Type: Under Voltage Release
  • Voltage Rating: 24 VAC
  • Control Voltage Maximum: 24 VAC
  • Temp Rating: -13°F to 158°F (-25°C to 70°C)
  • Weight: 5 lb
  • Standards: UL Listed
  • Certification: UL Listed
  • Compatible Frames: 3VA
  • Family: Sentron Series


Product Identification
  • UPC: 804766323386
  • GTIN: 0804766323386