Product Description

Siemens 3WT8085-6UA38-5AB2 800A 4-Pole Withdrawable Air Circuit Breaker 66kA with Rear Horizontal Connection

The Siemens 3WT8085-6UA38-5AB2 is a SENTRON 3WT8 withdrawable Air Circuit Breaker (ACB) designed for high-current low-voltage power distribution and protection applications. The supplied configuration 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.

This configuration is specified with a rear horizontal connection, making it suitable for switchboards where the breaker connection arrangement is designed for horizontal rear termination. The exact connection arrangement should be coordinated with the compatible Siemens guide frame, busbar layout and switchboard construction before installation.

The withdrawable design with guide frame provides operational flexibility for switchboard inspection, servicing, isolation and breaker replacement. The breaker can be moved between its connected and withdrawn positions according to the applicable switchgear operating procedure.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 power-distribution applications such as industrial feeders, main distribution sections, generator distribution systems and large low-voltage switchboards. The actual load current, conductor and busbar ratings, protection coordination and prospective short-circuit current should always be verified before final selection.

The supplied configuration includes a mechanical lockout device, tripped signalling switch, tripped indicators and guide frame. These functions provide additional operational control and status indication for professional electrical switchgear.

Publicly indexed search results did not return a reliable Siemens record for the exact 3WT8085-6UA38-5AB2 MLFB. Therefore, MLFB-specific details have been limited to the configuration provided and to the relevant Siemens 3WT8 800 A, Size 1 family information. The exact rear-horizontal connection should be verified against the original Siemens order documentation before installation.

Technical Specifications

Key Features

• Siemens 3WT8085-6UA38-5AB2

• SENTRON 3WT8 Air Circuit Breaker

• 800 A rated current

• 4-pole (4P) configuration

• Size 1

• Withdrawable circuit-breaker construction

• Guide frame

• Rear horizontal connection

• 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 distribution applications

• Professional low-voltage power protection solution

Applications

The Siemens 3WT8085-6UA38-5AB2 800A 4-pole withdrawable ACB with rear horizontal connection can be considered for:

• Main low-voltage switchboards

• Industrial power distribution

• High-current feeder protection

• Main distribution sections

• 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 3WT8085-6UA38-5AB2 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. Siemens 3WT8 documentation confirms the corresponding Size 1, 800 A family is available with this interruption level at 500 V AC. The actual prospective short-circuit current at the installation point should always be evaluated before final breaker selection.

The 4-pole construction provides coordinated protection and switching for compatible four-pole AC systems. This is useful for switchboards where four-pole circuit interruption is part of the electrical distribution design.

The withdrawable construction with guide frame provides flexibility for breaker servicing, inspection and controlled isolation. It can simplify maintenance and replacement procedures when used according to the manufacturer's instructions.

The rear horizontal connection is useful for switchboards designed with horizontal rear busbar or conductor connections. Correct alignment between the breaker, guide frame, primary disconnects and switchboard busbar arrangement is essential.

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

The Siemens SENTRON 3WT8 platform is intended 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 800A 4P 66kA withdrawable ACB with rear horizontal connection 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 exact MLFB, rear-horizontal connection arrangement, guide-frame compatibility, busbar dimensions, primary disconnect arrangement, prospective fault current, protection configuration and switchboard dimensions.

Why Buy Siemens 3WT8085-6UA38-5AB2 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 3WT8085-6UA38-5AB2 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 3WT8085-6UA38-5AB2?
It is a Siemens SENTRON 3WT8 withdrawable Air Circuit Breaker specified as a 4-pole, Size 1, 800 A breaker with rear horizontal connection as supplied in the configuration.

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 type of connection is specified?
The supplied configuration specifies a rear horizontal connection.

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

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