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Bard 8201-174BX - 3 Phase Line Monitor

Bard 8201-174BX is an OEM 3-phase line monitor used in Bard HVAC equipment to help protect the system by verifying proper three-phase power conditions before allowing operation. This monitor watches for issues like incorrect phase sequence, phase loss, and out-of-range conditions that can lead to nuisance shutdowns or serious damage to compressors and motors. Designed for 50/60 Hz applications and commonly listed for 180 to 600 VAC three-phase systems, it is a reliable replacement when troubleshooting repeated lockouts or electrical faults on compatible Bard wall-mounted units. Confirm voltage and model compatibility with your unit wiring diagram or service manual before ordering.


  • Technical Specifications
  • Product number: 8201-174BX
  • Manufacturer description: 3PH Line Monitor 50/60Hz-Boxed
  • Weight: 0.500 lbs
  • HTS Code: "9032.89.6025"

  • Previous Versions
  • 8201-126BX (Obsolete, superseded by 8201-174BX)
  • 8201-174 (Obsolete, superseded by 8201-174BX)
  • 8201-126 (Obsolete, superseded by 8201-126BX)
  • S8201-126 (Obsolete, superseded by 8201-126BX)
  • 8201-085 (Obsolete, superseded by 8201-126)

$109.00

What does the "BX" suffix mean?

Bard uses suffixes like "BX" to manage parts internally. These do not change the physical form or function of the part.

A part number ending in "BX" simply means it is packaged in a box for shipping, rather than for internal assembly use.

Example: 8406-142BX is physically identical to 8406-142.

This Part is Used in These Models ℹ️