Technical Specifications
Applications: Generator switching, high current switching, frequent operations, railway applications
Voltage levels: Medium-voltage distribution up to 24 kV
Breaking capacities:
3AE2: 31.5 kA
3AH37/38: 50 kA, 63 kA, 72 kA
3AK7: 40 kA, 50 kA
3AH3: 63 kA
Rated currents: 4,000 A, 5,000 A, 6,300 A, 8,000 A
Operating cycles: 30,000 ops, 60,000 ops, 120,000 ops
Frequency: 16.7 Hz, 25 Hz
Poles: One pole, Two poles
Benefits: Maintenance-free, high reliability, flexible design, German-made sustainable vacuum technology
Power supply: 24–48 V DC
Measuring inputs: 3 phase CT, 1 standard neutral CT, 1 sensitive neutral CT, 4 VT
Digital I/O: 40 digital inputs, 16 digital outputs
Communication protocols: IEC 61850 Ed.1/2, Modbus TCP, DNP3 TCP, EtherNet/IP
Cybersecurity: IEC 62443-4-2 SL1 compliant
Logic engine: Advanced logic per IEC 61131 & IEC 61449
Mounting: Withdrawable, flush or rack mounting
Protection degree: IP54 (with frame)
Operating temperature: -40 to +70 °C
Weight: approx. 3.5 kg
Power range: 3–36 MW, up to 13.8 kV
Arc-fault-resistant design for highest safety
High reliability with low component count
Multilevel topology enabling compatibility with standard motors
Fuseless design
Constant network power factor across full speed range
Direct Torque Control (DTC) technology
Ideal for compressors, pumps, fans
Optimized for chemical, oil & gas, and power generation industries
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