The Siemens 3WJ1225-2AF62-1AA0 is a high-performance SINOVA 3WJ Air Circuit Breaker (ACB) designed for reliable protection, switching, and isolation of low-voltage power distribution systems. This 4 Pole (4P), 2500A, 55kA Air Circuit Breaker features a Manual Draw-Out (MDO) mechanism and a microprocessor-based ETU360WJ trip unit with LSIG protection functions, ensuring advanced protection against overload, short circuit, and earth fault conditions. Engineered for industrial and commercial electrical installations, the breaker offers dependable performance, operational safety, and long service life in critical applications such as LT panels, PCC panels, MCCs, and power distribution networks.
• Siemens SINOVA 3WJ series Air Circuit Breaker (ACB)
• Part Number: 3WJ1225-2AF62-1AA0
• Rated current: 2500A
• 4 Pole (4P) configuration
• Breaking Capacity (Icu): 55kA at 440V AC
• Manual Draw-Out (MDO) execution
• Microprocessor-based ETU360WJ trip unit
• LSIG protection (Long Time, Short Time, Instantaneous & Ground Fault)
• Reliable overload, short circuit, and earth fault protection
• High electrical and mechanical endurance
• Compact and rugged industrial design
• Suitable for low-voltage power distribution systems
• Auxiliary contacts: 2NO + 2NC
• Ready-to-close signaling switch
• Easy installation, maintenance, and operation
• Designed according to IEC 60947-2 standards
• Ideal for PCC panels, MCC panels, LT switchboards, and industrial power systems
• Provides safe switching, isolation, and circuit protection in critical electrical applications
| Parameter | Specification |
|---|---|
| Product Series | Siemens SINOVA 3WJ |
| Part Number | 3WJ1225-2AF62-1AA0 |
| Product Type | Air Circuit Breaker (ACB) |
| Number of Poles | 4 Pole (4P) |
| Rated Current | 2500A |
| Rated Voltage | 440V AC |
| Frequency | 50/60 Hz |
| Breaking Capacity (Icu) | 55kA |
| Trip Unit | ETU360WJ Microprocessor Based |
| Protection Functions | LSIG (Overload, Short Circuit, Instantaneous & Ground Fault) |
| Mounting Type | Draw-Out Type |
| Operating Mechanism | Manual Draw-Out (MDO) |
| Auxiliary Contacts | 2NO + 2NC |
| Insulation Voltage | 1000V |
| Switching Function | Circuit Protection & Isolation |
| Standard Compliance | IEC 60947-2 |
| Application | PCC Panels, MCC Panels, LT Distribution Boards, Industrial Power Systems |
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