The Siemens 3WT8105-8KW68-5BC2 is part of the SENTRON 3WT8 series Air Circuit Breaker (ACB) range, designed for high-performance low-voltage power distribution, protection, and isolation. It is engineered for critical industrial environments where high fault level protection, reliability, and advanced electronic control are required.
This model is typically used in PCC panels, MCC panels, transformer feeders, generator incomers, and large industrial distribution systems.
• Siemens SENTRON 3WT8 Series ACB
• Part Number: 3WT8105-8KW68-5BC2
• 4-Pole withdrawable (draw-out) design
• Rated current: 1000A
• Frame size: Size 1
• Breaking capacity: 66 kA @ 500V AC (typical 3WT8105 platform rating)
• Advanced electronic trip unit (ETU series, LSING protection depending on configuration)
• Protection functions: Overload, Short circuit, Instantaneous, Earth fault
• High short-time withstand capability (Icw up to 66kA/s)
• Motorized + manual stored-energy operating mechanism
• Withdrawable design for easy maintenance and racking
• Mechanical lockout system for safety
• Auxiliary signaling contacts for status indication
• Guide frame system for smooth operation
• IEC 60947-2 compliant
• Designed for heavy industrial duty applications
| Parameter | Specification |
|---|---|
| Product Series | Siemens SENTRON 3WT8 |
| Part Number | 3WT8105-8KW68-5BC2 |
| Product Type | Air Circuit Breaker (ACB) |
| Number of Poles | 4 Pole |
| Rated Current (In) | 1000A |
| Frame Size | Size 1 |
| Breaking Capacity (Icu) | Up to 66 kA @ 500V AC (platform dependent) |
| Short-Time Withstand (Icw) | Up to 66 kA/s |
| Trip Unit | ETU-based electronic protection (LSING depending on variant) |
| Protection | Overload, Short Circuit, Instantaneous, Earth Fault |
| Rated Voltage (Ue) | Up to 500V AC |
| Insulation Voltage (Ui) | 1000V |
| Frequency | 50/60 Hz |
| Mounting Type | Withdrawable / Draw-out |
| Operating Mechanism | Manual + Motorized stored energy |
| Standard | IEC 60947-2 |
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