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C37.94-over-IP Gateway

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The TC3846-2 links or extends up to 2 channels of C37.94 circuits across Layer 2/3 Ethernet/IP, CE, or MPLS networks. It is easy to configure, offers extremely low latency, and supports point-to-point and point-to multi-point topologies.

  • Extends 2 Channels of IEEE C37.94 interfaces over Ethernet (ideal for Teleprotection Relays)
  • Extremely Low Latency
  • Built-In Temperature & Power Sensors
  • Extreme Temp (-40°C to +80ºC) Optional
  • Meets or Exceeds IEC 61850-3, IEEE1613 & NEMA TS-2 Standards
  • Member of the JumboSwitch® Product Family

The JumboSwitch® series is a TDM over IP/Ethernet based solution designed to emulate time-division multiplexing over packet switched networks (PSN). TDM over IP/Ethernet is a TDM pseudowire (PW) technology making it possible to provision E1, T1, E3, T3, STS-1 and serial data services across PSN's such as IP, MPLS or layer 2 Ethernet Networks.


Typical applications include extending C37.94 circuits across Ethernet/IP, CE, or MPLS networks.

For example, the TC3846-2 is often used to extend C37.94 signals from one protection relay to another over an Ethernet/IP network.

Each C37.94 optical fiber channel is independent and transparent to protocols and signaling used. Clear channel and octet aligned modes are supported.

TC3846-2 - C37.94 IP Gateway, C3794 ip gateway, teleprotection relays
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Connection Capacity
  1. C37.942 Ports
  2. Ethernet2 Ports
Optical (C37.94)
  1. TransmitterLED/ELED
  2. ReceiverPIN Diode
  3. Wavelength850nm MM, 1300/1550nm SM
  4. Fiber Optic ConnectorST
  5. Loss Budget* - 850/1300/1550nm
  6. Multimode @ 62.5/125µm15dB
  7. Single Mode @ 9/125µm20dB
  1. StandardsIEEE 802.3, 802.3u
  2. ConnectorRJ45
  3. Console Port2.5mm Audio Jack
Standard Compliance
  1. CE, FCC Part 15, CISPR (EN55022) CLASS A, IEC 61850-3, IEEE 1613, NEMA TS-2, IEC 60834

Diagnostic Functions
  1. Local and Remote Loopback for C37.94

  1. Unit StatusPWR (A, B), Alarm Vcc, BP, MGM, BU, PL
  2. C37.94Signal, Link
  3. EthernetLink, Duplex
  1. Standard12VDC
  2. Optional24, -48 VDC 90-260 VAC, 50/60Hz
  3. Power Consumption< 10W
Operating Temperature
  1. Hi-Temp-20°C to 70°C
  2. Extreme Temp-40°C to 80°C
  1. Temperature-40°C to 90°C
  2. Humidity95% non-condensing
Physical (Standalone Unit)
  1. Height(3.89 cm) 1.53"
  2. Width(18.54 cm) 7.30"
  3. Depth(24.87 cm) 9.79"
  4. Weight(0.4 gm) 1.00 lb
*Contact factory for higher requirements


For more information

For assistance with this product or to request a user manual please contact Technical Support.