The Siemens 3WT8161-6AA04-5AB2 is a SENTRON 3WT8 series Air Circuit Breaker (ACB) used for high-capacity low-voltage power distribution systems. It is mainly installed as a main incomer or feeder breaker in PCC, MCC, transformer and generator panels for industrial applications.
This model belongs to the 1600A frame class and provides high fault protection up to 66 kA, making it suitable for heavy industrial electrical networks.
• Siemens SENTRON 3WT8 series ACB
• Part Number: 3WT8161-6AA04-5AB2
• 3 Pole configuration
• Rated current: 1600A
• Breaking capacity: 66 kA @ 500V AC
• Withdrawable (draw-out) type design
• Electronic trip unit: ETU37WT LSING (microprocessor based)
• Protection functions: Overload, Short circuit, Earth fault
• Mechanical lockout + trip indication system
• Spring-charged operating mechanism (manual/motorized depending on variant)
• Auxiliary contacts and shunt release options (variant dependent)
• High short-time withstand capability (ICW up to 66kA)
• IEC 60947-2 compliant design
| Parameter | Specification |
|---|---|
| Product Series | Siemens SENTRON 3WT8 |
| Part Number | 3WT8161-6AA04-5AB2 |
| Product Type | Air Circuit Breaker (ACB) |
| Number of Poles | 3 Pole |
| Rated Current | 1600A |
| Rated Voltage | Up to 500V AC |
| Breaking Capacity (Icu) | 66 kA @ 500V AC |
| Protection Unit | ETU37WT LSING |
| Protection Functions | Overload, Short Circuit, Earth Fault |
| Type | Withdrawable / Draw-out |
| Frequency | 50/60 Hz |
| Mounting Type | Fixed base with draw-out mechanism |
| Standard | IEC 60947-2 |
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