The Siemens 3WT8105-6UA34-5AK2 is a SENTRON 3WT8 withdrawable Air Circuit Breaker (ACB) intended for high-current low-voltage power distribution and protection applications. Based on the supplied product configuration, this breaker is a 4-pole, Size 1 unit with a rated current of 1000 A, suitable for 500 V AC at 50/60 Hz, with a specified ultimate short-circuit breaking capacity (Icu) of 66 kA at 500 V AC.
The 3WT8105-6UA34-5AK2 features a withdrawable construction with guide frame, making it suitable for switchboards where breaker inspection, isolation, servicing and replacement are important. The withdrawable arrangement allows the ACB to be moved between its operating and withdrawn positions according to the applicable switchgear operating procedure.
The 1000 A rated current makes this circuit breaker suitable for high-capacity electrical distribution applications such as main incomers, feeders, generator distribution and industrial switchboards. Correct coordination with busbars, conductors, upstream and downstream protective devices and the actual prospective short-circuit current is essential during selection.
The specified 66 kA Icu at 500 V AC provides a high level of short-circuit interruption capability for suitable high-fault-level installations. The actual fault current at the installation point should always be checked against the breaker rating before commissioning.
The product configuration supplied also specifies a mechanical lockout device, tripped signalling switch and tripped indicators. These features can support controlled breaker operation, status indication and maintenance procedures in industrial switchgear.
The 3WT8 Size 1, 1000 A family is documented by Siemens with high short-circuit interruption capability at 500 V AC. However, I could not locate a publicly indexed Siemens record for the exact 3WT8105-6UA34-5AK2 MLFB during verification, so MLFB-specific details beyond the configuration you supplied have not been assumed.
| Specification | Details |
|---|---|
| Product | Siemens 3WT8105-6UA34-5AK2 |
| Product Type | Withdrawable Air Circuit Breaker |
| Series | SENTRON 3WT8 |
| Configuration | 4-Pole |
| Frame Size | Size 1 |
| Rated Current (In) | 1000 A |
| Operating Voltage | Up to 500 V AC |
| Frequency | 50/60 Hz |
| Ultimate Short-Circuit Breaking Capacity (Icu) | 66 kA at 500 V AC |
| Construction | Withdrawable |
| Guide Frame | Included as specified |
| Mechanical Lockout Device | Included as specified |
| Tripped Signalling Switch | Included as specified |
| Tripped Indicators | Included as specified |
| Application | High-current low-voltage power distribution |
Siemens 3WT8105-6UA34-5AK2
SENTRON 3WT8 Air Circuit Breaker
1000 A rated current
4-pole (4P) configuration
Size 1
Withdrawable circuit-breaker design
Guide frame
Suitable for applications up to 500 V AC
50/60 Hz AC operation
66 kA Icu at 500 V AC
Mechanical lockout device
Tripped signalling switch
Tripped indicators
Designed for high-capacity electrical distribution
Suitable for industrial switchboards
Suitable for main incomer and feeder applications
Suitable for professional low-voltage power protection
The Siemens 3WT8105-6UA34-5AK2 1000A 4-pole withdrawable ACB can be considered for:
Main low-voltage switchboards
Main incomer applications
Industrial power distribution
High-current feeder protection
Generator distribution systems
Large manufacturing plants
Process industries
Commercial building power distribution
Infrastructure power systems
Industrial electrical switchboards
OEM switchgear assemblies
Critical power-distribution systems
High-capacity electrical panels
Power-distribution sections
Industrial and commercial electrical infrastructure
The 1000 A rated current makes the 3WT8105-6UA34-5AK2 suitable for high-capacity low-voltage power-distribution systems where substantial electrical loads require reliable switching and protection.
The 66 kA Icu at 500 V AC provides high short-circuit interruption capability for suitable high-fault-level installations. Siemens documentation for the relevant 3WT8 Size 1, 1000 A family confirms the 66 kA interruption rating at 500 V AC. The actual prospective short-circuit current should always be evaluated before final selection.
The 4-pole configuration provides coordinated protection and switching for compatible four-pole AC systems. This can be useful where four-pole circuit interruption is required by the electrical distribution design.
The withdrawable construction with guide frame provides flexibility for switchboard maintenance and service operations. It allows the breaker to be withdrawn according to the prescribed operating procedure, which can simplify inspection and replacement activities.
The mechanical lockout device supports controlled breaker operation and can form part of defined electrical isolation and maintenance procedures.
The tripped signalling switch and tripped indicators provide useful breaker-status information for operators and maintenance personnel. These functions can help identify a tripped condition and support troubleshooting during electrical system restoration.
The Siemens SENTRON 3WT8 platform is designed for professional low-voltage power-distribution applications, making this ACB relevant for OEMs, EPC contractors, panel builders, electrical contractors, system integrators and industrial maintenance teams.
The Siemens 1000A 4P 66kA withdrawable ACB can be considered for suitable projects across Faridabad, Delhi NCR, Noida, Gurgaon/Gurugram, Ghaziabad, Punjab, Mumbai, Pune, Ahmedabad, Hyderabad, Bengaluru/Bangalore, Chennai, Kolkata, Jaipur, Chandigarh, Ludhiana and other major industrial and commercial locations across India.
Before installation or replacement, verify the complete MLFB configuration, protection-release details, guide-frame compatibility, busbar arrangement, prospective fault current, control requirements and switchboard dimensions.
SB Smart supplies Siemens ACBs, circuit breakers, switchgear and industrial electrical products for OEMs, EPC contractors, panel builders, electrical contractors, system integrators and industrial maintenance teams across India.
The Siemens 3WT8105-6UA34-5AK2 1000A 4-pole withdrawable ACB is suitable for customers looking for high-capacity Siemens circuit protection for main distribution boards, industrial switchboards, high-current feeders, generator systems and infrastructure power-distribution applications.
SB Smart supports Siemens product sourcing across Faridabad, Delhi NCR, Noida, Gurgaon/Gurugram, Mumbai, Pune, Ahmedabad, Hyderabad, Bengaluru/Bangalore, Chennai, Kolkata, Chandigarh, Ludhiana and other major Indian industrial markets.
1. What is Siemens 3WT8105-6UA34-5AK2?
It is a Siemens SENTRON 3WT8 withdrawable Air Circuit Breaker specified as a 4-pole, Size 1, 1000 A breaker.
2. What is the rated current?
The rated current is 1000 A.
3. What is the short-circuit breaking capacity?
The specified Icu is 66 kA at 500 V AC for the supplied configuration and relevant 3WT8 Size 1, 1000 A family.
4. What is the rated voltage?
The stated application rating is up to 500 V AC at 50/60 Hz.
5. Is this circuit breaker withdrawable?
Yes. The supplied configuration specifies a withdrawable circuit breaker with guide frame.
6. How many poles does it have?
The specified configuration is 4-pole (4P).
7. What safety and indication features are included?
The supplied configuration includes a mechanical lockout device, tripped signalling switch and tripped indicators.
8. Where can this ACB be used?
It can be considered for suitable main switchboards, industrial power distribution, high-current feeders, generator systems, large electrical panels and infrastructure power-distribution applications.
| Parameter | Specification |
|---|---|
| Product Series | Siemens SENTRON 3WT8 |
| Part Number | 3WT8105-6UA34-5AK2 |
| Product Type | Air Circuit Breaker (ACB) |
| Number of Poles | 4 Pole |
| Rated Current (In) | 1000A |
| Frame Size | Size 1 |
| Breaking Capacity (Icu) | 66 kA @ 500V AC |
| Short-Time Withstand (Icw) | 66 kA/s |
| Trip Unit | ETU37WT (Microprocessor-based) |
| Protection | LSING (Overload, Short, 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 | Motorized + Manual stored energy |
| Standard | IEC 60947-2 |
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