TIME MARK 3-PHASE 208 240VAC POWER MONITOR B263

Description:

The Time Mark Corporation B263 3-Phase Power Monitor is designed to continuously monitor 208/240 VAC three-phase power systems for phase loss, phase reversal, and undervoltage conditions to protect motors and industrial equipment. Commonly installed in motor control centers, HVAC systems, pumps, compressors, conveyors, and manufacturing equipment where dependable three-phase power monitoring is essential. Maintenance teams, OEMs, and system integrators use the B263 for replacement, repair, retrofit, and preventive maintenance to minimize equipment damage and reduce unplanned downtime.

Applications:

The Time Mark B263 is a solid-state three-phase power monitor that continuously supervises Wye or Delta power systems without requiring a neutral connection and de-energizes its output relay whenever phase loss, phase reversal, or undervoltage conditions are detected. It is widely used in industrial automation systems, water and wastewater facilities, motor control panels, compressors, conveyors, HVAC equipment, and process machinery where reliable three-phase power monitoring helps prevent costly electrical failures and production interruptions.

Technical Specifications:

• Manufacturer: Time Mark Corporation
• Manufacturer Part Number (MPN): B263
• Product Type: 3-Phase Power Monitor
• Nominal Voltage: 208/240 VAC (Phase-to-Phase)
• Voltage Adjustment Range: 160–240 VAC
• Frequency: 60 Hz
• Power Consumption: 1.5 W
• Monitoring Functions: Phase Loss, Phase Reversal, Undervoltage
• Output Contacts: SPDT, 10 A at 240 VAC Resistive
• Response Time: 50 ms
• Reset Type: Automatic
• Repeat Accuracy: ±0.1% of Set Point
• Dead Band: Approximately 2%
• Mounting: Surface Mount
• 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, compressor, pump, HVAC, conveyor, and industrial equipment protection.

Common Replacements:

• Time Mark B263M
• Time Mark B263SG