Product Description

Siemens 3WT8085-6UA38-5AP2 800A 4-Pole Withdrawable Air Circuit Breaker 66kA

The Siemens 3WT8085-6UA38-5AP2 is a SENTRON 3WT8 withdrawable Air Circuit Breaker (ACB) intended for high-current low-voltage power distribution and protection applications. The supplied configuration specifies a 4-pole, Size 1 circuit breaker with a rated current of 800 A, suitable for operation up to 500 V AC at 50/60 Hz, with an ultimate short-circuit breaking capacity (Icu) of 66 kA at 500 V AC.

The 3WT8085-6UA38-5AP2 features a withdrawable construction with guide frame, making it suitable for switchboards where controlled isolation, inspection, servicing and breaker replacement are important. A withdrawable arrangement allows the breaker to be moved between its connected and withdrawn positions according to the applicable switchgear operating procedure.

The 800 A rated current makes this ACB suitable for high-capacity electrical distribution systems such as industrial main feeders, incomers, generator distribution systems, large electrical panels and low-voltage switchboards. Correct coordination with busbars, conductors, upstream and downstream protective devices and the actual prospective short-circuit current should always be verified before installation.

The specified 66 kA Icu at 500 V AC provides high short-circuit interruption capability for suitable high-fault-level installations. Siemens documentation confirms that the corresponding 3WT8 Size 1, 800 A family is available with 66 kA Icu at 500 V AC and 50 kA short-time current strength, depending on configuration.

The supplied configuration includes a mechanical lockout device, tripped signalling switch, tripped indicators and guide frame, providing useful operational and status functions for professional switchgear.

The closely matching 3WT8085-6UA38/6UA34 family is documented with the ETU37WT LSING electronic overcurrent release with display, motorized/manual operating mechanism, auxiliary releases and auxiliary contacts in applicable MLFB configurations.

MLFB verification note: I could not locate a directly indexed Siemens record for the exact 3WT8085-6UA38-5AP2 during verification. Therefore, exact MLFB-specific details beyond the configuration supplied by you have not been assumed.

Technical Specifications

Key Features

• Siemens 3WT8085-6UA38-5AP2

• SENTRON 3WT8 Air Circuit Breaker

• 800 A rated current

• 4-pole (4P) configuration

• Size 1

• Withdrawable circuit-breaker construction

• 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

• Suitable for high-capacity electrical distribution

• Suitable for industrial switchboards

• Suitable for main feeder and incomer applications

• Professional low-voltage power protection solution

Applications

The Siemens 3WT8085-6UA38-5AP2 800A 4-pole withdrawable ACB can be considered for:

• Main low-voltage switchboards

• Industrial power distribution

• High-current feeder protection

• Main incomer applications

• 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

Benefits

The 800 A rated current makes the 3WT8085-6UA38-5AP2 suitable for high-capacity low-voltage 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. The corresponding Siemens 3WT8 Size 1, 800 A family is documented with this interruption rating at 500 V AC. The actual prospective short-circuit current at the installation point should always be evaluated before final selection.

The 4-pole construction provides coordinated protection and switching for compatible four-pole AC systems. This can be useful in distribution systems where four-pole circuit interruption is required by the electrical design.

The withdrawable construction with guide frame provides operational flexibility for inspection, servicing and controlled isolation. The breaker can be withdrawn according to the prescribed switchgear operating procedure, supporting maintenance and replacement activities.

The mechanical lockout device supports controlled breaker operation during defined electrical isolation and maintenance procedures. The tripped signalling switch and tripped indicators provide useful status information for operators and maintenance personnel.

The corresponding ETU37WT LSING configuration provides electronic overcurrent protection and display functionality in applicable 3WT8085 withdrawable variants.

The Siemens SENTRON 3WT8 platform is designed for professional low-voltage power distribution, making this ACB suitable for OEMs, EPC contractors, panel builders, electrical contractors, system integrators and industrial maintenance teams.

The Siemens 800A 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, control requirements, guide-frame compatibility, busbar arrangement, prospective fault current, switchboard dimensions and protection coordination.

Why Buy Siemens 3WT8085-6UA38-5AP2 from SB Smart?

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 3WT8085-6UA38-5AP2 800A 4-pole withdrawable ACB is suitable for customers looking for high-capacity Siemens circuit protection for main switchboards, industrial feeders, generator systems, high-current distribution panels 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.

FAQs

1. What is Siemens 3WT8085-6UA38-5AP2?
It is a Siemens SENTRON 3WT8 withdrawable Air Circuit Breaker specified as a 4-pole, Size 1, 800 A breaker.

2. What is the rated current?
The rated current is 800 A.

3. What is the short-circuit breaking capacity?
The specified Icu is 66 kA at 500 V AC.

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 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.

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