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Time Mark 258B 3-Phase Monitoring Relay

This 3-phase monitor relay detects phase loss, low voltage, and phase reversal, ensuring reliable operation of motors and power systems. Equipped with solid-state voltage and phase-angle sensing, it activates an electro-mechanical relay when conditions are normal and de-energizes during faults. It supports both automatic and manual reset options, does not require a neutral connection, and is compatible with Wye or Delta systems. Its wide voltage adjustment range, indicator lights for trip and normal conditions, and robust construction make it ideal for industrial power monitoring, with UL and CSA approvals ensuring safety.

Authorized Distributors
Part No:258-B
Stock:0
Inv Date:06-11-2026
Price: Unit price: $2.11
Buy/RFQ:
Part No:258B
Stock:6
Inv Date:06-11-2026
Price: Unit price: $142.26
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Part No:258-B
Stock:0
Inv Date:06-11-2026
Price: Unit price: $1.91
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Part No:258B
Stock:118
Inv Date:06-11-2026
Price: Unit price: $1.78
Buy/RFQ:
Part No:258-B
Stock:0
Inv Date:06-11-2026
Price: Unit price: $1.91
Buy/RFQ:
Part No:258B
Stock:118
Inv Date:06-11-2026
Price: Unit price: $1.78
Buy/RFQ:

Time Mark 258B 3-Phase Monitoring Relay Specifications:

  • Coil Voltage: 208/240 VAC
  • Contact Configuration: SPDT (1 Form C)
  • Current Rating: 10 amps resistive
  • Mounting: 8-pin octal socket
  • Response Time: 50 milliseconds
  • Transient Protection: 2500 VAG for 10 ms
  • Operating Temperature: -40°F to 131°F
  • Humidity Tolerance: 0% to 97% RH, no condensation
  • Enclosure Material: Dust cover made of ABS plastic
  • Agency Certifications: UL Recognized, CSA Certified

Buy the Buy Time Mark 3-Phase Monitor Part Number 258B Online

Ensure continuous, safe operation of your industrial motors with the Time Mark 258B 3-Phase Monitor. This relay detects phase loss, reversal, and low voltage, providing reliable protection. It features quick response time, robust construction, and wide voltage adjustment for flexible installation. The device supports automatic and manual reset modes, making it suitable for various applications. With UL recognition and CSA certification, you can trust its safety and performance. Purchase online today for improved system reliability and peace of mind.

Buy Time Mark 258B 3-Phase Monitor now and ensure your power system’s reliability with precise phase and voltage monitoring in industrial applications.

Frequently Asked Questions

Where can I buy Time Mark 258B?

You can click on the BUY or RFQ button to purchase 258B from an authorized Time Mark distributor.

How do I troubleshoot issues or seek technical support for part 258B?

You can download the 258B datasheet or visit the Time Mark website for support.

Who is the manufacturer of 258B?

Time Mark

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