Overview：
GSI127-021 244-127-000-021 A2-B01 Galvanic Separation Unit
The GSI127-021 244-127-000-021 A2-B01 electrical isolation unit is an industrial-grade electrical isolation module used for signal and power electrical isolation in industrial automation systems. It employs magnetic coupling isolation technology to block ground loops, suppress electromagnetic interference/radio frequency interference, and protect PLCs, DCSs, and other control devices from voltage transients and surges. It provides isolation voltages up to 4000V RMS between the sensor and monitoring sides and up to 50V RMS between the power supply and output sides, supporting 4-20mA and 0-10V signal transmission, making it suitable for harsh industrial and hazardous environments.
The GSI127-021 244-127-000-021 A2-B01 electrical isolation unit integrates seamlessly with Siemens S7-1500, HIMA, ABB, and Rockwell control systems without the need for additional converters.
Ordering information：
| Parameter | Details |
|---|---|
| Model Number |
GSI127-021 244-127-000-021 A2-B01 |
|
Type |
Galvanic Separation Unit , Ex version |
|
Isolation Voltage |
4000V RMS (sensor side to monitor side); 50V RMS (power supply to output signal) |
|
Operating Voltage |
24VDC (±10% tolerance), 21mA maximum current consumption |
|
Response Time |
≤1ms |
|
Operating Temperature |
-20°C to +60°C |
|
Protection Class |
IP20 |
|
HS Code |
85437099 |
| Product Net Length | 85mm |
| Product Net Height | 32mm |
| Product Net Width | 55mm |
| Product Net Weight |
Approx. 120g (excluding mounting accessories) |
Function & Features：
- High Isolation Voltage: 4000V RMS electrical isolation between the sensor and monitoring sides, and 50V RMS electrical isolation between the power supply and output signal sides, effectively blocking high-voltage transients and protecting downstream control equipment from damage.
- Wide Input/Output Range: Supports 4-20mA current signals and 0-10V voltage signals, featuring long-distance current signal transmission conversion from μA to mV and short-distance voltage signal transmission conversion from V to V, compatible with various industrial sensors and transmitters.
- Industrial-Grade Stability: Operating temperature range of -20°C to +60°C, storage temperature range of -40°C to +85°C, and IP20 protection rating. Maintains stable performance even in dusty, humid, and temperature-fluctuating industrial environments, ensuring long-term continuous operation.
- Fast Response Time: Response time ≤1ms, ensuring zero signal transmission delay and maintaining high-precision control in industrial automation systems. Suitable for high-frequency signal transmission scenarios such as vibration monitoring and real-time control. Explosion-proof certification support: Equipped with explosion-proof certification, suitable for potentially explosive environments (hazardous areas), meeting the safety requirements of industries with explosion risks such as petrochemicals and pharmaceuticals.
- Reverse polarity protection: Built-in reverse polarity protection circuit to prevent equipment damage caused by incorrect wiring during installation, reducing maintenance costs and installation error rate.
Questions & Answers
💡 FAQ
Q: Can the isolation voltage and input/output interfaces of GSI127-021 A2-B01 be customized?
A: Customization is supported. The isolation voltage is adjustable within the range of 1000V-5000V RMS, and the input/output interfaces can be modified according to your equipment. Customization will extend the delivery time by 1-2 business days.
Q: Is GSI127-021 244-127-000-021 compatible with Siemens S7-1500, ABB, and HIMA DCS/PLC systems?
A: Fully compatible. This device outputs standard 4-20mA current signals and 0-10V voltage signals, allowing direct connection to the analog input modules of these systems without additional signal converters. Detailed wiring diagrams can be provided upon request.
Q: What is the isolation voltage? Can it withstand transient high-voltage surges?
A: The isolation voltage between the sensor side and the monitoring side is 4000V RMS, and the isolation voltage between the power supply side and the output signal side is 50V RMS. It can withstand transient high voltages up to 6000V (1ms), effectively protecting downstream control equipment from surge damage.
Q: What material is the housing made of? Is it corrosion-resistant and interference-resistant?
A:The housing is made of flame-retardant ABS plastic, which has good corrosion resistance and can resist the erosion of common industrial chemicals. The internal circuit adopts EMI/RFI shielding design to effectively suppress electromagnetic interference and ensure stable signal output.
Q: What is the payment method?
A: T/T
Q: Is technical support available?
A: Yes, we have a professional technical team to address technical issues.
Q: What is the warranty?
A: 1 year
Q: What is the return and exchange policy?
A: Returns or exchanges are accepted within 7 days of receiving the goods if there are any quality issues, excluding damage caused by human error or misuse.
Q:What are the available shipping methods?
A: FedEx, DHL, UPS, and others.
Contact us
Our address
Room 1904, Building B, Diamond Coast, No. 96 Lujiang Road, Siming District, Xiamen, Fujian, China
Phone Number
+86 18059276824
sales7@nseauto.com
why choose us?
We specialize in providing industrial automation and control solutions, including ABB, GE, Bently Nevada, and other critical DCS/PLC components. Here's why customers trust us for their industrial automation needs:
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