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7UT6121-4EB20-1AA0

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Overview of Siemens 7UT6121-4EB20-1AA0 Digital Differential Protection Relay

The Siemens 7UT6121-4EB20-1AA0 is a digital differential protection relay designed to protect transformers, generators, motors, and short cable systems. It features a 4-line alphanumeric backlit display and advanced programmable functions for precise fault detection and system reliability.

Key Features of Siemens 7UT6121-4EB20-1AA0 Protection Relay

  • Digital Differential Protection: Provides sensitive and selective protection against internal faults.
  • Display: 4-line alphanumeric backlit display for clear visualization of system status and fault data.
  • Programmable Functions: 7 programmable binary inputs and 4 programmable binary outputs for flexible system integration.
  • Current Transformers Support: Compatible with 1 A current transformers.
  • Supply Voltage: Operates on DC 110 V to 250 V or AC 115 V to 230 V for versatile application.
  • Relay Outputs: 3 binary inputs, 4 binary outputs, and 1 watchdog contact for comprehensive control.
  • Case Size: 1/3 19” rack mount, suitable for standard industrial panels.

Technical Specs of Siemens 7UT6121-4EB20-1AA0 Differential Protection Relay

Specification Details
Model Number 7UT6121-4EB20-1AA0
Function Digital Differential Protection
Display 4-line Alphanumeric Backlit
Programmable Inputs 7 Binary Inputs
Programmable Outputs 4 Binary Outputs
Watchdog Contact 1
Current Transformer 1 A
Supply Voltage DC 110 V - 250 V / AC 115 V - 230 V
Mounting 1/3 19” Rack Mount

Applications / Use Case

The 7UT6121-4EB20-1AA0 relay is used for differential protection of critical electrical assets such as transformers and generators, offering precise fault detection and reliable system protection for industrial power networks.

Siemens ensures this relay meets strict reliability, safety, and performance standards for demanding power system applications.

7UT6121-4EB20-1AA0

$0.00

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Does it come with a warranty?

Yes, All products are offered wth 1-Year warranty.

What is the condition of the product?

All products sold are New & Unused.

How fast is shipping?

All products are delivered within 2-8 business days depending on our stock location.

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