Abb Spas 120 C-da Directional Earth Fault Relay Rs 431 010-da Rustronic High Fidelity: The device is 39591 Ktms-20-6 avoiding surprise power shortages
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Abb Spas 120 C da Directional Earth Fault Relay Rs 431 010 da Rustronic High Fidelity: The device is 39591 Ktms 20 6 avoiding surprise power shortages High Fidelity: The device is set to convert pressure to that electrical signal with high fidelity thus it is claimed to be accurate and stable 2000 Alstom Power Conversion