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Square D FA11127 - Undervoltage Release 24VDC (Plug-in)

Square D
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Square D FA11127 is an undervoltage release accessory designed to automatically trip a compatible circuit breaker when the control circuit voltage falls below a safe threshold, protecting downstream equipment from damage due to brownout conditions. This unit operates at a control voltage of 24 VDC and is engineered for use with Square D FA, FAF, FAL, FAP, FH, FHF, FHL, and FHP circuit breaker frames. The plug-in mounting design allows for straightforward installation within the breaker assembly, and the component weighs 2 lb. It is UL Listed, meeting recognized safety standards for industrial electrical systems. This undervoltage release is typically applied in manufacturing facilities, commercial power distribution panels, and motor control centers where automatic disconnection during undervoltage events is required.

Key Features & Specifications
  • Type: Undervoltage Release
  • Manufacturer: Square D
  • Family: Square D Series
  • Series: FA
  • Part Number: FA11127
  • Control Voltage: 24 VDC
  • Control Voltage Minimum: 24 V
  • Control Voltage Maximum: 24 V
  • Compatible Frames: FA, FAF, FAL, FAP, FH, FHF, FHL, FHP
  • Function: Undervoltage Trip
  • Threshold Tripping Voltage: 0.35...0.7 Un
  • Mounting Type: Plug-in
  • Weight: 2 lb
  • Standards: UL Listed