CAN Bus 3kV Isolator

$199.00

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SKU: GC-CAN-3KV-ISOLATOR

MPN: GC-CAN-3KV-ISOLATOR

Manufacturer: Grid Connect Inc.

Stock Status: In stock

Delivery: Ships same or next business day
Qualifies for Free shipping to the continental US

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Product Information

Product Description

Assembled in the USA

The GC-CAN-3KV-ISOLATOR is an inline Controller Area Network (CAN) bus isolator that places 3 kV of galvanic isolation between your CAN transceiver and the rest of the network. It installs in seconds using standard DB9 connectors, requires no software driver, and is powered by a single USB-C cable — making it the fastest path to a protected, noise-immune CAN segment.

CAN bus networks in automotive and industrial environments face three persistent threats: electromagnetic interference (EMI), ground loops, and high-voltage transients. Any one of them can corrupt frames or destroy hardware. The GC-CAN-3KV-ISOLATOR addresses all three at once:

  • EMI and RFI immunity: 3 kV isolation keeps CAN_H and CAN_L signals clean regardless of what is happening electrically in the surrounding system.
  • Ground loop elimination: The isolator breaks the ground path between the CAN transceiver and the host system, removing the voltage differentials that cause unwanted current flow and noise.
  • Voltage surge protection: The isolated barrier withstands transients up to 3 kV, protecting the transceiver and every device behind it.

Installing the isolator requires no network redesign. It drops in-line between your existing CAN cable and device using one male and one female DB9 connector. Protocol support covers the full ISO 11898-2 High Speed CAN specification:

  • CAN FD (Flexible Data Rate) — bit rates from 5 kbit/s up to 5 Mbit/s
  • Classical CAN — bit rates from 5 kbit/s to 1 Mbit/s

The transceiver is the Texas Instruments TCAN1462, paired with the TI ISO6721 digital isolator — both established components with strong track records in industrial and automotive applications. A 120 Ohm termination resistor is fixed on the primary side; the secondary side is unterminated, so your network termination scheme stays under your control.

+5VDC provided by host CAN device or by external power source using Micro USB cable/connector (optional). No driver installation or firmware configuration is required — connect USB-C power, install inline, and the blue status LED confirms the unit is live. Always install or remove the isolator with device power off; connecting to a live CAN network can damage the isolator and attached hardware.

The unit is built for the temperature and humidity conditions common in automotive and industrial deployments:

  • Operating temperature: −40°C to +85°C
  • Storage temperature: −40°C to +100°C
  • Relative humidity: 15–90%, non-condensing
  • Compact plastic enclosure: 2.66" × 1.4" × 0.74", 10 g

CAN DB9 Connector Pinout

Pin 1: NC / Optional +5V for powering the CAN 3kV Isolator
Pin 2: CAN_L
Pin 3: GND
Pin 4: NC
Pin 5: NC
Pin 6: GND
Pin 7: CAN_H
Pin 8: NC
Pin 9: NC

 

NOTE: A 3kV isolator must be added to each device you want to protect on the CAN Bus network.

Features

  • 3 kV galvanic isolation protects CAN transceivers and connected equipment from voltage transients and surges
  • Eliminates ground loops by breaking the ground connection between the CAN transceiver and the host system

  • ISO 11898-2 compliant — supports CAN 2.0A (standard), CAN 2.0B (extended), and CAN FD

  • Bit rates from 5 kbit/s to 1 Mbit/s (classical CAN); up to 5 Mbit/s with CAN FD

  • Texas Instruments ISO6721 digital isolator and TCAN1462 transceiver — proven in industrial and automotive applications

  • Powered via USB-C at +5 V DC — no dedicated power rail required (USB-C cable sold separately)

  • No software driver required — installs inline between any CAN cable and device using DB9 connectors (1 male, 1 female)

  • 120 Ohm termination on the primary side; secondary side unterminated for full user control

  • Blue status LED confirms supply voltage at a glance

  • Operating range −40°C to +85°C; storage to +100°C — rated for automotive and industrial environments

  • Compact at 2.66" × 1.4" × 0.74" and 10 g — minimal footprint for space-constrained installations

  • Applications: Automotive electronics, CAN bus isolation, EV battery systems, fuel cells, industrial control, medical equipment

Documents and Drivers

Documentation

CAN 3kV Isolator Product Brief

CAN Bus Isolation Comparison Chart

Specifications

USB Interface

Power Only

USB-C cable (not included)

CAN Interface

• CAN Standard

ISO 11898-2 High speed CAN 2.0A (standard format), 2.0B (extended format) and CAN FD (Flexible Data Rate)

• Bit rates

5 kbit/s to 1Mbit/s (with CAN FD up to 5 Mbit/s)

• Transceiver

TCAN1462

• Termination

120 Ohm on the primary side, none on the secondary side

Electrical Characteristics

• Input voltage range

5V

• Input current

MAX 500 mA

• Isolation voltage

3kV

LED

Status for supply voltage indication

Package

• Enclosure

Plastic

• Connectors

2 DB9, 1 Female & 1 Male

• Size (W x H x D)

67 x 36 x 18 mm (2.6 x 1. x 0.74 in)

• Weight

10 g (0.02 lb)

Environment

• Operating temperature

-40°C ~ 85°C (-40°F ~ 185°F)

• Storage temperature

-40°C ~ 100°C (-40°F ~ 212°F)

• Humidity

15 to 90% relative humidity non condensing

Installation warning

Add the 3kV Isolator to a CAN bus network with device power OFF. Damage can occur if done live.

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