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Siemens 3VA9978-0BB27 - Under Voltage Release 440-480VAC

Siemens
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Siemens 3VA9978-0BB27 is an Under Voltage Release accessory from the Sentron Series, designed to automatically trip a circuit breaker when the supply voltage drops below a predetermined level. This unit operates within a control voltage range of 440 to 480 VAC, ensuring reliable protection for connected equipment. The component weighs 5 lb and is compatible with 3VA frames, featuring a robust construction rated for temperatures from -13°F to 158°F (-25°C to 70°C). It is UL Listed, confirming compliance with rigorous safety and performance standards for industrial electrical systems. This under voltage release is typically applied in manufacturing facilities, power distribution panels, and automated machinery to prevent equipment damage from undervoltage conditions.

Key Features & Specifications
  • Type: Under Voltage Release
  • Voltage Rating: 440-480 VAC
  • Control Voltage Minimum: 440 V
  • Control Voltage Maximum: 480 V
  • Temp Rating: -13°F to 158°F (-25°C to 70°C)
  • Standards: UL Listed
  • Certification: UL Listed
  • Compatible Frames: 3VA
  • Weight: 5 lb


Product Identification
  • UPC: 80476632341
  • GTIN: 00804766323416