Siemens Withdrawable Circuit Breaker, 4-Pole, Size 2, In=2000A to 500V, 50/60Hz AC, Icu=66kA at 500V, with Mechanical Lockout Device, Tripped Signaling Switch, Tripped Indicators & Guide Frame - 3WT8206-6AA08-5AB2

Product Description

Siemens 3WT8206-6AA08-5AB2 Withdrawable Air Circuit Breaker (ACB) | 2000A, 4-Pole, 66kA

Ensure maximum safety, reliability, and uninterrupted power distribution in your low-voltage networks with the Siemens 3WT8206-6AA08-5AB2 SENTRON 3WT8 Withdrawable Air Circuit Breaker (ACB). Engineered for high-demand industrial, commercial, utility, and critical infrastructure environments, this 4-pole, 2000A ACB delivers advanced protection against overloads, short circuits, and electrical faults.

Built in accordance with global IEC 60947-2 standards, the Siemens 3WT8 series provides exceptional electrical endurance, robust short-circuit breaking performance, and seamless maintenance capability.

Key Features & Benefits

• High Breaking Capacity (66kA @ 500V AC): Designed with a Size 2 frame, this unit offers superior short-circuit interrupting capability ($I_{cu} = 66\text{kA}$ at $500\text{V AC}$), protecting heavy-duty equipment against severe electrical surges.

• Withdrawable Design with Guide Frame: Comes complete with a factory-matched guide frame, allowing quick, safe insertion or removal of the breaker unit without disconnecting main power busbars—significantly minimizing system downtime.

• Integrated Mechanical Lockout Device: Enhances safety during maintenance and servicing by physically preventing unintended or accidental breaker operation.

• Siemens Electronic Trip Unit (ETU): Delivers precise, adjustable trip parameters for comprehensive system protection against overloads and short-circuit conditions.

• Real-Time Fault Diagnostics: Outfitted with an integrated trip signaling switch and clear mechanical trip indicators for immediate visual status checks and remote alarm integration.

• Versatile Application Support: Perfect for use as a main incomer, bus coupler, feeder breaker, generator breaker, or transformer protection unit in critical power distribution boards.

  
  

  Frequently Asked Questions (FAQ)

  1. What is the main advantage of a withdrawable ACB over a fixed ACB?

  A withdrawable ACB includes a dedicated guide frame that allows the main breaker unit to be racked in or out without shutting down or disconnecting the main busbars. This enables faster maintenance, safer testing, and minimal operational downtime.

  2. Is the guide frame included with the Siemens 3WT8206-6AA08-5AB2?

  Yes, this model comes complete with the matching Siemens guide frame for immediate withdrawable mounting installation.

  3. What protection features does the electronic trip unit provide?

  The integrated Siemens electronic trip unit provides precision protection against overloads ($L$), short-circuit delay ($S$), instantaneous short circuits ($I$), and earth faults ($G$), depending on the specific ETU configuration selected.

  4. Where is the Siemens 3WT8 2000A ACB typically installed?

  The Siemens 3WT8206-6AA08-5AB2 is widely used in low-voltage switchboards (LVSG), motor control centers (MCC), main incomers, transformer protection panels, generator panels, and bus-coupler applications across industrial plants and commercial buildings.