7NG4142-8AA SIEMENS

7NG4142-8AA Siemens Basis unit

Brand：SIEMENS Model number：7NG4142-8AA

Country of origin: Germany Product weight：0.55kg

HS code：8517623990

Product Details：

Product Dimensions：

This device is a 1-channel signal isolator housed in a compact rail-mounting case. Its primary function is to decouple current loops and prevent the transmission of interference or ground loops in process automation systems. Because it is an output-loop powered device, it draws the energy required for its internal electronics directly from the $4\text{ to }20\text{ mA}$ output signal, which significantly simplifies installation and reduces wiring costs by eliminating the need for additional power cables.

Product Parameters

Input Signal: $4\text{ to }20\text{ mA}$ DC (single channel)
Output Signal: $4\text{ to }20\text{ mA}$ DC (linear transmission)
Power Supply: None required (powered by the output loop)
Voltage Drop: Typically low, allowing for use in loops with limited voltage overhead
Isolation Voltage: $510\text{ V}$ AC test voltage between input and output
Housing Type: Compact rail housing for DIN rail mounting
Protection Class: IP20 (intended for installation in a protected control cabinet)
Accuracy: High transmission accuracy with minimal temperature drift
Number of Channels: 1 channel

Product Advantages

No Auxiliary Power Needed: Since the module is powered via the signal loop, there is no need for a separate power supply unit, reducing hardware costs and cabinet heat dissipation.
Galvanic Isolation: Provides effective protection against potential differences and ground loops, ensuring signal integrity between field devices and the control system.
Space-Saving Design: The compact form factor allows for high-density installation on standard DIN rails, making it ideal for retrofitting in crowded control panels.
Maintenance-Free: The solid-state design with no moving parts or batteries ensures a long service life with minimal maintenance requirements.
Simplified Wiring: Reduces the complexity of the wiring scheme, as only the input and output signal lines need to be connected.

Important Considerations

Load Limitations: As the device is powered by the output loop, it introduces a specific voltage drop into the circuit. You must ensure that the voltage source in the loop is sufficient to overcome the resistance of the isolator plus any other connected loads.
Qualified Personnel Only: Installation and commissioning should only be performed by personnel trained in electrical engineering and process automation to prevent equipment damage.
Environmental Conditions: Ensure the ambient temperature and humidity remain within the specified ranges for IP20-rated devices to prevent condensation or overheating.
Explosion Protection: Verify if the specific 8AA variant meets the hazardous area requirements (Intrinsic Safety) for your installation site before use.

6ES7972-0CB20-0XA0 SIEMENS

We have the same series of models in stock. If you don't find the model you need, please contact us and we will provide you with an official quotation！

SIEMENS6SE6440-2UD13-7AA1

SIEMENS6SL3224-0BE37-5AA0

SIEMENS6DD1684-0BC0

SIEMENS6DD1684-0AH0

SIEMENS6AV6542-0CA10-0AX0

SIEMENS3RT1044-1AG20

SIEMENS6AV6647-0AH11-3AX0

SIEMENS3RT2017-1AF01

SIEMENS6ES7321-1CH20-0AA0

SIEMENS6ES7331-7HF01-0AB0

SIEMENS6ES7195-7HA00-0XA0

SIEMENS6SE70386GL841JA1