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3AH4305-2TK88-8KB0-Z

The Siemens 3AH4305-2TK88-8KB0-Z is a medium-voltage vacuum circuit breaker (VCB) from the 3AH4 series, designed for reliable power distribution and protection in industrial and utility applications. It features advanced arc-quenching technology in a vacuum interrupter, ensuring high breaking capacity and long service life.

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TEL：400-887-3214
Mail：jilineasyyi@outlook.com
Q Q：615739355
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Key Features & Specifications
1. General Characteristics
Type: 3AH4 Vacuum Circuit Breaker (Fixed or Draw-Out Design)

Rated Voltage: 12 kV / 17.5 kV / 24 kV (Region-Specific)

Rated Current: 1250 A / 1600 A / 2000 A (Model-Dependent)

Short-Circuit Breaking Capacity: 25 kA / 31.5 kA / 40 kA

Mechanical Life: ≥ 10,000 Operations

Standards Compliance: IEC 62271, ANSI C37.xx

2. Product Code Breakdown (3AH4305-2TK88-8KB0-Z)
3AH4305 → Base model (3AH4 series, 305 = specific ratings)

2TK88 → Optional accessories (e.g., motor drive, auxiliary switches)

8KB0 → Configuration code (tripping coil type, interlocks)

Z → Special customization or revision

3. Typical Applications
Power Distribution: Switchgear panels, transformer protection

Industrial Plants: Mining, oil & gas, cement, steel mills

Renewable Energy: Wind/solar farm grid connections

4. Advantages
Maintenance-Free: Vacuum technology eliminates gas replenishment.

Compact Design: Saves space in switchgear installations.

High Reliability: Siemens’ proven 3AH interrupter technology.