Accessories – Voltage- and Frequency Relay SPI1021
Voltage- and Frequency-Relay with integrated Vector-Shift-Relay Grid- and Plant Protection.
For more information, we refer you to the datasheet and certificates below which are available to download. Or visit www.ziehl.de and look for the SPI1021 under the Mains monitoring group.
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Photonworld Solar Ltd
401 Aurs Glen
TEL: 0141 280 5454
Company No: SC489436
VAT No: GB218788466