Time Mark Corporation C263 Three-Phase Monitor

Description:

The Time Mark Corporation C263 3-Phase Monitor is designed to continuously monitor 380–480 VAC three-phase power systems for phase loss, phase reversal, and low-voltage conditions to protect motors and industrial equipment from electrical faults. Commonly installed in motor control panels, HVAC systems, pumps, compressors, conveyors, and manufacturing equipment where dependable three-phase power monitoring is essential. Maintenance teams, OEMs, and system integrators use the C263 for replacement, repair, and preventive maintenance to improve system reliability and reduce costly downtime.

Applications:

The Time Mark C263 is a solid-state three-phase monitor that supervises Wye or Delta power systems without requiring a neutral connection and automatically de-energizes its output relay whenever phase loss, phase reversal, or undervoltage conditions are detected. Featuring panel (surface) mounting, screw terminal connections, adjustable voltage settings, and a 10 A output relay, it is widely used in industrial automation, motor control centers, HVAC equipment, compressors, pumps, conveyors, and other three-phase machinery requiring continuous power monitoring and motor protection.

Technical Specifications:

• Manufacturer: Time Mark Corporation
• Manufacturer Part Number (MPN): C263
• Product Type: 3-Phase Monitor Relay
• Series: 263 Series
• Nominal Input Voltage: 480 VAC (Phase-to-Phase)
• Voltage Adjustment Range: 380–480 VAC
• Frequency: 60 Hz
• Monitoring Functions: Phase Loss, Phase Reversal, Low Voltage
• Output Contacts: SPDT, 10 A at 240 VAC Resistive
• Relay Type: Electromechanical Relay with Solid-State Sensing Circuit
• Repeat Accuracy: ±0.1% of Set Point
• Response Time: 50 ms
• Dead Band: Approximately 2%
• Power Consumption: 4.5 W
• Transient Protection: 2500 VRMS for 10 ms
• Reset: Automatic (manual reset version also available)
• Indicators: NORMAL and TRIP LEDs
• Mounting: Surface/Panel Mount
• Terminal Type: Screw Terminals
• Enclosure Material: ABS Plastic
• Operating Temperature: -20°F to +131°F (-29°C to +55°C)
• Certifications: UL Recognized, CSA Certified
• Application: Three-phase motor protection, industrial automation, HVAC systems, pumps, compressors, conveyors, and process equipment.

Common Replacements:

• Time Mark C263M
• Time Mark C269
• Time Mark C265