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Littelfuse 102A Voltage Monitor

The 102A Series is a versatile 3-phase voltage and phase monitor designed to safeguard motors operating between 190-480VAC at 50/60Hz. Equipped with microcontroller-based circuitry, it constantly monitors voltage levels and phase conditions, automatically switching between 200V and 400V ranges for convenience. The device offers adjustable trip and restart delays, comprehensive LED diagnostics for fault identification, and high-voltage protection features, ensuring reliable motor operation and quick fault detection with minimal nuisance tripping. Suitable for industrial applications requiring precise voltage and phase supervision.

Authorized Distributors
Source:Newark
Part No:102A
Stock:1
Inv Date:05-28-2026
Price: Unit price: $268.43
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Source:DigiKey
Part No:102A
Stock:100
Inv Date:05-28-2026
Price: Unit price: $2.14
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Source:DigiKey
Part No:102A
Stock:20
Inv Date:05-28-2026
Price: Unit price: $287.41
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Part No:102A
Stock:0
Inv Date:05-29-2026
Price: Unit price: $1.7
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Part No:102A
Stock:0
Inv Date:05-29-2026
Price: Unit price: $257.48
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Part No:102A
Stock:0
Inv Date:05-28-2026
Price: Unit price: $274.55
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Part No:102A
Stock:0
Inv Date:05-28-2026
Price: Unit price: $1.112
Buy/RFQ:
Part No:102A
Stock:0
Inv Date:05-28-2026
Price: Unit price: $199.47
Buy/RFQ:
Part No:102A
Stock:0
Inv Date:05-28-2026
Price: Unit price: $1.112
Buy/RFQ:
Authorized Distributors
Part No:102A
Stock:0
Inv Date:05-28-2026
Price: Unit price: $199.47
Buy/RFQ:

Littelfuse 102A Voltage Monitor Specifications:

  • Frequency: 50°/60Hz
  • Low Voltage Trip: 90% of setpoint
  • Reset: 93% of setpoint
  • Voltage Unbalance Trip: 6%
  • Reset: 45%
  • Trip Delay Time: 4 seconds (standard)
  • Restart Delay Time: 2 seconds (standard)
  • Output Contact Rating: 480VA @ 240VAC, 10A @ 240VAC
  • Ambient Temperature Range - Operating: -40° to 70°C
  • Storage: -40° to 80°C
  • Trip & Reset Accuracy: 21%
  • Maximum Input Power: 5W
  • Terminal Torque: Not specified
  • Wire Size: 12-18 AWG
  • Standards Passed: UL508, CSA, IEC 61000-4-2, IEC 61000-4-4, IEC 61000-4-5, IEC 60947-6-2
  • Dimensions: H 74.4 mm, W 133.9 mm, D 74.9 mm
  • Weight: 1.05 lbs.
  • Mounting Method: Screws

Buy the Littelfuse Series 102A Voltage Monitor: 102A

Upgrade your motor protective systems with the Littelfuse 102A voltage and phase monitor. Designed for 190-480VAC applications, it provides precise voltage and phase monitoring, quick fault detection, and customizable trip delays. Featuring advanced LED diagnostics for easy fault identification, high-voltage protection, and compliance with industry standards, this device ensures your equipment runs smoothly and safely. Order online now to experience reliable, efficient motor protection for industrial environments, backed by trusted quality and technical reliability.

Get Littelfuse 102A voltage and phase monitor today—built for reliable motor protection with adjustable delays and advanced diagnostics.

Frequently Asked Questions

Where can I buy Littelfuse 102A?

You can click on the BUY or RFQ button to purchase 102A from an authorized Littelfuse distributor.

How do I troubleshoot issues or seek technical support for part 102A?

You can download the 102A datasheet or visit the Littelfuse website for support.

Who is the manufacturer of 102A?

Littelfuse

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