🔹 Siemens SENTRON 3WT Air Circuit Breaker – 3WT8202-8AA08-5BC2 (Microprocessor Trip Unit ACB)
🔹 Product Description
The Siemens 3WT8202-8AA08-5BC2 is a SENTRON 3WT series Air Circuit Breaker (ACB) designed for high-capacity low-voltage power distribution systems with advanced intelligent protection and monitoring features. It is equipped with a microprocessor-based electronic trip unit (ETU37WT class / ETU family depending on configuration) that ensures precise and reliable protection for modern electrical installations.
This breaker is widely used in industrial plants, commercial complexes, infrastructure projects, data centers, and main LT switchboards, where high fault levels, system reliability, and selective coordination are critical requirements.
The integrated electronic trip unit provides protection against overload, short circuit, and earth fault conditions, along with adjustable protection settings, fault diagnostics, and coordination features. This helps improve system stability, reduces downtime, and enhances safety in complex electrical distribution networks.
The SENTRON 3WT series is Siemens’ intelligent ACB platform designed for modular and withdrawable power distribution systems, allowing safe maintenance and quick replacement without shutting down the entire installation.
Based on Siemens official SENTRON 3WT architecture, the 3WT8202 frame class belongs to the 2000A range (Size II) with high breaking capacity up to approximately 66kA at 500V AC, depending on configuration and trip unit version.
The platform also supports advanced digital upgrades, communication options, and modern protection logic for smart electrical distribution systems.
🔹 Key Features
• Genuine Siemens SENTRON 3WT Air Circuit Breaker
• Model: 3WT8202-8AA08-5BC2
• Microprocessor-based electronic trip unit (smart protection system)
• Protection against overload, short circuit, and earth fault
• High breaking capacity for industrial power distribution
• Withdrawable (draw-out) design for safe maintenance
• Supports selective coordination in complex networks
• Suitable for MCC, PCC, and main LT panels
• Advanced fault diagnostics and monitoring capability
• Designed for long service life and industrial reliability
| Parameter | Specification |
|---|---|
| Product Series | Siemens SENTRON 3WT |
| Model Number | 3WT8202-8AA08-5BC2 |
| Product Type | Air Circuit Breaker (ACB) |
| Rated Current | 2000 A (typical 3WT8202 frame class) |
| Poles | 3 / 4 Pole (variant dependent) |
| Trip Unit | Microprocessor-based Electronic Trip Unit (ETU family) |
| Protection Functions | Overload, Short Circuit, Earth Fault |
| Mounting Type | Withdrawable / Draw-out type |
| Breaking Capacity | Up to ~66 kA @ 500V AC |
| Application | Industrial / Commercial Power Distribution |
| Brand | Siemens |
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