The Siemens 3WT8161-6AA04-5AA2 / 5AX2 family belongs to the SENTRON 3WT8 series Air Circuit Breakers (ACB) used in industrial low-voltage power distribution systems.
The specific variant 3WT8161-6AA04-5AX2 is a configuration variant of the 1600A withdrawable ACB platform, used mainly in PCC, MCC, transformer incomers, and generator distribution panels.
• Siemens SENTRON 3WT8 series ACB
• Part Number: 3WT8161-6AA04-5AX2
• 3 Pole configuration
• Rated current: 1600A
• Breaking capacity: 66 kA @ 500V AC (3WT8 standard platform)
• Withdrawable (draw-out) type design
• Electronic trip unit: ETU37WT LSING (variant dependent)
• Protection functions: Overload, Short circuit, Earth fault
• Mechanical lockout + trip indication system
• Spring stored-energy operating mechanism (manual/motorized options depending on suffix)
• Auxiliary contacts / shunt release options vary by suffix (AA04 / AX2)
• IEC 60947-2 compliant design
| Parameter | Specification |
|---|---|
| Product Series | Siemens SENTRON 3WT8 |
| Part Number | 3WT8161-6AA04-5AX2 |
| Product Type | Air Circuit Breaker (ACB) |
| Rated Current | 1600A |
| Poles | 3 Pole |
| Breaking Capacity | 66 kA @ 500V AC |
| Trip Unit | ETU37WT LSING (typical platform) |
| Type | Withdrawable / Draw-out |
| Rated Voltage | Up to 500V AC |
| Frequency | 50/60 Hz |
| Standard | IEC 60947-2 |
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