Product Description

Siemens 3WT8085-6UP34-5AB2 800A 4-Pole Withdrawable Air Circuit Breaker 66kA

The Siemens 3WT8085-6UP34-5AB2 is a SENTRON 3WT8 withdrawable Air Circuit Breaker (ACB) designed for high-current low-voltage power distribution and protection applications. The configuration supplied is 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 a specified ultimate short-circuit breaking capacity (Icu) of 66 kA at 500 V AC.

The 3WT8085-6UP34-5AB2 uses a withdrawable construction with guide frame, making it suitable for industrial and commercial switchboards where controlled isolation, inspection, servicing and breaker replacement are important. Siemens documentation for the closely matching 3WT8085 withdrawable family confirms the 800 A, 4-pole, 500 V AC, 66 kA platform with ETU37WT LSING electronic overcurrent release.

The ETU37WT LSING electronic overcurrent release with display provides electronic protection for suitable overload, short-circuit and earth-fault conditions, with the protection settings selected according to the electrical system and coordination requirements. The corresponding 3WT8085 withdrawable configuration is documented with this trip-unit family.

The 800 A rated current makes the breaker suitable for high-capacity distribution applications including main feeders, incomers, generator distribution, industrial plants and large low-voltage switchboards. The actual load current, conductor and busbar ratings, prospective short-circuit current and protection coordination should always be verified before installation.

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.

MLFB note: I could not locate a directly indexed public Siemens record for the exact 3WT8085-6UP34-5AB2 during verification. Therefore, exact MLFB-specific details beyond the specifications you supplied and the verified 3WT8085-6UA34/related family documentation have not been assumed.

Technical Specifications

The corresponding Siemens/3WT8 800 A withdrawable 4-pole family is documented with 66 kA Icu at 500 V, ETU37WT LSING and guide-frame construction.

Key Features

• Siemens 3WT8085-6UP34-5AB2

• SENTRON 3WT8 Air Circuit Breaker

• 800 A rated current

• 4-pole (4P) configuration

• Size 1

• Withdrawable circuit-breaker design

• Guide frame

• Rated for applications up to 500 V AC

• 50/60 Hz AC operation

• 66 kA Icu at 500 V AC

• ETU37WT LSING electronic overcurrent release with display

• Electronic overload, short-circuit and earth-fault protection

• Mechanical lockout device

• Tripped signalling switch

• Tripped indicators

• Suitable for high-capacity electrical distribution

• Suitable for industrial switchboards and power-distribution assemblies

Applications

The Siemens 3WT8085-6UP34-5AB2 800A 4-pole withdrawable ACB can be considered for:

• Main low-voltage switchboards

• Main feeder 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

Benefits

The 800 A rated current makes the 3WT8085-6UP34-5AB2 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 800 A Size 1 family confirms this interruption rating at 500 V AC. The prospective short-circuit current at the actual installation point should always be checked before final selection.

The 4-pole construction provides coordinated protection and switching for compatible four-pole AC systems. This can be useful where four-pole interruption is required by the electrical distribution 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 ETU37WT LSING electronic overcurrent release with display provides electronic protection and monitoring suitable for overload, short-circuit and earth-fault protection. This supports more controlled protection coordination than a purely electromechanical protective arrangement.

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

For OEMs, EPC contractors, panel builders, electrical contractors, system integrators and industrial maintenance teams, the Siemens 3WT8 platform provides a professional solution for high-capacity low-voltage power distribution.

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, ETU settings, guide-frame compatibility, busbar arrangement, control requirements, prospective fault current, switchboard dimensions and coordination with upstream and downstream protection.

Why Buy Siemens 3WT8085-6UP34-5AB2 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 3WT8085-6UP34-5AB2 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 3WT8085-6UP34-5AB2?
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 for the supplied configuration and corresponding 3WT8 800 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 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 overcurrent release is specified?
The supplied configuration specifies the ETU37WT electronic overcurrent release, and corresponding 3WT8085 withdrawable documentation identifies the ETU37WT LSING with display.

8. What safety and indication features are included?
The supplied configuration includes a mechanical lockout device, tripped signalling switch, tripped indicators and guide frame.

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