Time Mark Corporation A2644 Three-Phase Monitor

Description:

The Time Mark Corporation A2644 3-Phase Monitor is designed to continuously monitor 120 VAC three-phase Wye or Delta power systems for phase loss, phase reversal, and undervoltage conditions to protect motors and industrial equipment. Commonly installed in motor control centers, HVAC systems, compressors, pumps, refrigeration equipment, and manufacturing machinery where dependable three-phase power monitoring is essential. Maintenance teams, OEMs, and system integrators use the A2644 for replacement, repair, retrofit, and preventive maintenance to reduce equipment damage and minimize unplanned downtime.

Applications:

The Time Mark A2644 is a solid-state three-phase monitor that continuously supervises Wye or Delta power systems and operates an internal DPDT relay when abnormal conditions such as phase loss, phase reversal, or low voltage are detected. Its adjustable trip delay minimizes nuisance trips during motor startup, while the optional restart delay is ideal for compressors and refrigeration equipment, making it well suited for industrial automation, HVAC systems, water and wastewater facilities, conveyors, pumps, and process machinery.

Technical Specifications:

• Manufacturer: Time Mark Corporation
• Manufacturer Part Number (MPN): A2644
• Product Type: 3-Phase Monitor
• Nominal Voltage: 120 VAC (Phase-to-Phase)
• Voltage Adjustment Range: 85–120 VAC
• Frequency: 60 Hz
• Phase Sensing: Phase Loss and Phase Reversal
• Voltage Protection: Undervoltage Monitoring
• Output Contacts: DPDT, 10 A at 240 VAC Resistive
• Trip Delay: Adjustable 0.2–20 Seconds
• Restart Delay: Optional Fixed 3.5 Minutes (Restart Delay Models)
• Reset: Automatic (Manual Reset Version Available)
• Visual Indicators: TRIP and NORM LEDs
• Mounting: Surface Mount
• Enclosure Material: ABS Plastic
• Operating Temperature: -20°F to +131°F (-29°C to +55°C)
• Humidity: 0–97% Non-Condensing
• Certifications: UL Recognized, CSA Certified
• Application: Three-phase motor, compressor, HVAC, refrigeration, pump, and industrial equipment protection.

Common Replacements:

• Time Mark A2644M
• Time Mark A2644R
• Time Mark A2642