
IVT 3 Series current measurement sensors for DC applications, with scalable safety and monitoring features from ASIL C to ASIL B.
IVT 3 Series current measurement sensors from Isabellenhütte deliver high-precision performance tailored for demanding DC applications. Built on a compact and modular platform, these sensors integrate easily into battery management systems, electric vehicles, renewable energy installations, and industrial automation environments. Moreover, their flexible design allows users to add advanced features like voltage sensing and insulation monitoring, depending on specific project needs.
Importantly, each model complies with ISO 26262:2018 requirements for functional safety. The IVT 3 Base focuses on essential current sensing functions. It includes temperature monitoring, CAN 2.0B communication, and UDS diagnostics, enabling both seamless integration and remote firmware updates. As a result, this version fits systems that require accurate current measurement without additional monitoring layers.
In contrast, the IVT 3 Pro extends functionality by adding three or six high-voltage measurement channels and active insulation monitoring. Consequently, it enhances both system safety and diagnostic depth—particularly in high-voltage or safety-critical applications.
Both models maintain reliable performance across extreme temperatures, ranging from –40°C to +125°C. They deliver a total accuracy of ±0.4% of reading plus 0.1 A, covering a nominal range of ±1,000 A and an extended range of ±4,000 A. Thanks to CAN 2.0B support, integration into BMS and industrial systems is straightforward. Additionally, UDS enables over-the-air diagnostics and software updates, enhancing long-term system adaptability.
Furthermore, the IVT 3 Series current measurement sensors supports a wide range of use cases. It suits hybrid and electric vehicles, uninterruptible power supplies, stationary energy storage systems, fuel cell platforms, and industrial DC power control. With 12 V and 24 V supply voltage options, it adapts easily to different architectures. Ultimately, this sensor series brings together precision, scalability, and safety in one powerful solution.
The IVT 3 Series is engineered to monitor current, voltage, and insulation across a variety of DC-powered systems, such as:
Hybrid & Battery Electric Vehicles (EV/HEV): Ensures safe and efficient power monitoring
Stationary Energy Storage Systems (BESS): Supports long-term battery health and reliability
Uninterruptible Power Supply (UPS) Systems: Delivers high-reliability backup power
Battery & Storage-Based Applications: Provides accurate energy tracking and diagnostics
Fuel Cell Systems: Optimized for alternative energy and green mobility
Industrial Power & Automation: Designed for DC-based industrial power control and automation
| Specification | IVT 3 Base | IVT 3 Pro |
|---|---|---|
| Current Measurement | Yes (ASIL C) | Yes (ASIL C) |
| Voltage Measurement Channels | Not available | 3 or 6 channels (ASIL B) |
| Insulation Monitoring | Not available | Yes (ASIL B) |
| Temperature Monitoring | Yes | Yes |
| Nominal Current Range | ±1,000 A | ±1,000 A |
| Extended Current Range | ±4,000 A | ±4,000 A |
| Total Accuracy | ±0.4% of reading + 0.1 A | ±0.4% of reading + 0.1 A |
| Operating Temperature | -40°C to +125°C | -40°C to +125°C |
| Voltage Measurement Range | – | Up to 1,200 V |
| Communication Interface | CAN 2.0B | CAN 2.0B |
| Diagnostics & Firmware Updates | UDS (OBD) | UDS (OBD) |
| Supply Voltage | 24 V | 12 V or 24 V |
| ISO Compliance (Isolation) | ISO 60664 (Basic Isolation) | ISO 60664 (Basic Isolation) |
| Optional Features | Analog channel, sleep mode | Analog channel, sleep mode |
| Safety Standard | ISO 26262:2018 (ASIL C) | ISO 26262:2018 (ASIL C/B) |

