Siemens Residual-Current Transformer for Residual Current Monitoring – 3UL2302-1A
The Siemens 3UL2302-1A is a high-precision residual-current transformer designed for use with Siemens SIRIUS residual current monitoring relays. It is used for detecting leakage and residual currents in industrial electrical systems, helping improve electrical safety, prevent insulation faults, reduce fire hazards, and minimize equipment downtime.
This toroidal current transformer is specifically engineered for compatibility with Siemens 3UG46 and 3UG48 residual current monitoring relays. It provides reliable differential current sensing for industrial automation systems, motor protection circuits, switchboards, and power distribution applications. Its compact construction and DIN-compliant design ensure easy integration into modern electrical installations.
Key Features:
• Residual-current transformer for leakage current monitoring
• Compatible with Siemens 3UG46 and 3UG48 monitoring relays
• High-accuracy differential current sensing
• Toroidal compact construction
• Reliable insulation fault detection
• Supports industrial electrical safety systems
• Easy panel integration
• Durable industrial-grade design
• Suitable for AC residual current monitoring
• Maintenance-free operation
• Long operational service life
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Technical Specifications
|
Parameter |
Specification |
|
Product Model |
3UL2302-1A |
|
Brand |
Siemens |
|
Product Series |
SIRIUS 3UL23 |
|
Product Type |
Residual-Current Transformer |
|
Transformer Type |
Toroidal Current Transformer |
|
Application |
Residual / Leakage Current
Monitoring |
|
Compatible Relays |
Siemens 3UG46 / 3UG48 Series |
|
Inner Diameter |
Approx. 35 mm |
|
Measuring Principle |
Differential Current Detection |
|
Installation Type |
Cable / Conductor Pass-Through |
|
Mounting Type |
Panel Mounting |
|
Housing Material |
Industrial Thermoplastic |
|
Frequency Range |
50/60 Hz |
|
Protection Class |
IP20 |
|
Operating Temperature |
-25°C to +55°C |
|
Standards & Approvals |
IEC, CE |
|
Maintenance Requirement |
Maintenance-Free |
|
Product Lifecycle |
Active Product |
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