Industrial 273USNT Solid State AC Current Monitor

Description:

The Time Mark 273 Solid State AC Current Monitor is designed to continuously monitor single-phase AC current and provide reliable overcurrent or undercurrent detection with an adjustable trip point for industrial control systems. Commonly installed in motor control panels, pumps, conveyors, compressors, and process equipment where continuous current monitoring helps prevent equipment damage and improve system reliability. Maintenance teams, OEMs, and system integrators use the Time Mark 273 for replacement, repair, retrofit, and preventive maintenance in industrial automation applications.

Applications:

The Time Mark Model 273 is a solid-state single-phase current monitor that can be configured for either overcurrent or undercurrent sensing depending on the wiring configuration. It is widely used in industrial automation, HVAC equipment, conveyors, pumps, compressors, machine tools, and process control systems where accurate AC current monitoring helps detect abnormal operating conditions, protect motors, and reduce costly equipment downtime.

Technical Specifications:

• Manufacturer: Time Mark Corporation
• Manufacturer Part Number (MPN): 273 (Various Models: 273-5-24, 273-5-120, 273-10-24, 273-10-120)
• Product Type: Solid State AC Current Monitor
• Monitoring Type: Single-Phase AC Current Monitor
• Current Range: 0.5–5 A or 2–10 A (model dependent)
• Supply Voltage: 24 VAC or 120 VAC (model dependent)
• Frequency: 50–400 Hz
• Sensing Function: Overcurrent or Undercurrent
• Trip Point: Adjustable
• Repeat Accuracy: 1% Maximum
• Dead Band: 4% Maximum
• Output Contacts: SPDT, 10 A at 240 VAC Resistive
• Reset: Automatic
• Power Consumption: 1 W Maximum
• VA Burden: Less than 0.5 VA
• Mounting: Standard 8-Pin Socket
• Operating Temperature: -20°F to +131°F (-29°C to +55°C)
• Enclosure Material: ABS Plastic
• Certifications: UL Recognized and CSA Certified (273-5 Models)
• Application: Industrial motor protection, conveyor systems, pumps, compressors, HVAC equipment, and process monitoring.

Common Replacements:

• Time Mark 2732 Current Monitor
• Time Mark 2734 Current Sensitive Relay
• Time Mark 273-10-120