The Siemens 7UG0995 Core Balance Current Transformer (CBCT) is a dedicated earth leakage monitoring accessory designed for use in Earth Fault and Earth Leakage Protection systems associated with SENTRON 3VA Moulded Case Circuit Breakers (MCCBs). The CBCT continuously monitors residual current flowing through electrical conductors and helps detect earth leakage faults before they develop into serious safety hazards, equipment failures, or fire risks.
The 7UG0995 is a 310 mm diameter Core Balance Current Transformer, specifically developed for use with Siemens Earth Leakage Relays such as the 7UG0842 series. It forms an essential part of a complete earth leakage protection system by sensing leakage current and transmitting the signal to the monitoring relay for analysis and protective action.
Earth leakage protection is a critical requirement in modern electrical distribution systems because it helps:
These benefits make the Siemens 7UG0995 CBCT an important component in industrial, commercial, and infrastructure power systems.
The CBCT operates by measuring the vector sum of currents flowing through all conductors passing through its core. Under normal conditions, the sum is zero. If leakage current flows to earth due to insulation breakdown or wiring faults, the CBCT detects the imbalance and signals the earth leakage relay, which can then initiate tripping of an MCCB, ACB, OCB, or other protective device.
One of the major advantages of the 7UG0995 is its large 310 mm internal diameter, making it suitable for installations with larger cable bundles, high-current feeders, busbar systems, and industrial power distribution circuits. This larger aperture allows easy installation where smaller CBCTs may not accommodate conductor sizes.
The Siemens 7UG0995 is designed for compatibility with Siemens Earth Leakage Relays and SENTRON protection systems. When used together, these devices provide reliable leakage current detection, fault indication, and protective tripping functions for electrical networks. Siemens recommends that all phase conductors and neutral pass through the CBCT while the earth conductor must not pass through the transformer opening.
Manufactured to Siemens quality standards, the CBCT provides dependable performance, long service life, and reliable operation even in demanding industrial environments. It is commonly used in manufacturing plants, utility installations, motor control centers, commercial buildings, process industries, and critical infrastructure projects.
At SB Smart (SBSmart.in), we provide genuine Siemens protection and monitoring components for industrial electrical systems. The Siemens 7UG0995 CBCT offers dependable earth leakage detection and seamless integration with Siemens SENTRON protection solutions, helping improve safety and operational reliability.
Whether you are implementing a new earth leakage monitoring system or upgrading an existing power distribution installation, the Siemens 7UG0995 delivers the performance, safety, and reliability expected from Siemens electrical protection products.
| Specification | Details |
|---|---|
| Product Name | Core Balance Current Transformer (CBCT) |
| Part Number | 7UG0995 |
| SKU | 7UG0995 |
| Brand | Siemens |
| Product Family | SENTRON |
| Product Type | CBCT for Earth Leakage Relay |
| Function | Earth Leakage Monitoring |
| Application | Earth Fault & Earth Leakage Protection |
| Internal Diameter | 310 mm |
| Current Monitoring Range | 10 mA – 30 A |
| Compatible Relay Series | Siemens 7UG0842 Earth Leakage Relay |
| Compatible MCCB Series | SENTRON 3VA MCCB |
| Installation Type | Panel Mounted |
| Certification | CE, RoHS |
| Color | Black |
| Country of Origin | India |
| Manufacturer | Siemens |
No reviews yet.