The Siemens 3WT8105-6UA18-5AB2 is a high-performance SENTRON 3WT Air Circuit Breaker (ACB) engineered for protection, control, and isolation of low-voltage power distribution systems. This 4-pole withdrawable Air Circuit Breaker is rated at 1000A and features an advanced ETU37WT Electronic Trip Unit with LSING protection functions for reliable overload, short-circuit, instantaneous, and ground-fault protection. Designed for critical industrial and commercial applications, the breaker offers a high breaking capacity of 66kA, motorized/manual operation, and a draw-out construction for easy maintenance and enhanced operational safety. It is ideally suited for PCC panels, MCC panels, generator incomers, transformer feeders, and main LT distribution systems.
• Siemens SENTRON 3WT Series Air Circuit Breaker (ACB)
• Part Number: 3WT8105-6UA18-5AB2
• 4-Pole withdrawable (draw-out) construction
• Rated current: 1000A
• Frame Size 1 design
• ETU37WT Electronic Trip Unit with display
• LSING protection functions
• Overload, short-circuit, instantaneous, and ground-fault protection
• High breaking capacity: 66kA at 500V AC
• Rated operational voltage up to 500V AC
• Rated insulation voltage: 1000V
• Motorized and manual stored-energy operating mechanism
• Mechanical lockout device for enhanced safety
• Tripped indication and signaling contacts provided
• Auxiliary switch configuration (2NO + 2NC)
• High short-time withstand current capability
• Guide frame for easy withdrawal and maintenance
• Compact and modular design for switchgear applications
• Suitable for industrial, commercial, and infrastructure projects
• Complies with IEC 60947-2 standards
• Long mechanical and electrical service life
• Ideal for PCC, MCC, generator, transformer, and main distribution applications
| Parameter | Specification |
|---|---|
| Product Series | Siemens SENTRON 3WT |
| Part Number | 3WT8105-6UA18-5AB2 |
| Product Type | Air Circuit Breaker (ACB) |
| Number of Poles | 4 Pole |
| Rated Current (In) | 1000A |
| Frame Size | Size 1 |
| Mounting Type | Withdrawable / Draw-Out |
| Trip Unit Type | ETU37WT Electronic Trip Unit |
| Protection Functions | LSING (Overload, Short Circuit, Instantaneous & Ground Fault) |
| Breaking Capacity (Icu) | 66kA at 500V AC |
| Short-Time Withstand Current (Icw) | 66kA |
| Rated Operational Voltage (Ue) | Up to 500V AC |
| Rated Insulation Voltage (Ui) | 1000V |
| Rated Impulse Withstand Voltage (Uimp) | 12kV |
| Frequency | 50/60 Hz |
| Operating Mechanism | Motorized / Manual Stored-Energy Mechanism |
| Auxiliary Contacts | 2NO + 2NC |
| Safety Features | Mechanical Lockout Device |
| Standard Compliance | IEC 60947-2 |
| Mechanical Life | Up to 16,000 Operations |
| Electrical Life | Up to 10,000 Operations |
| Application | PCC Panels, MCC Panels, LT Distribution Systems, Generator Protection, Transformer Feeders |
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