The ABB TB521-ETH is a terminal base used with the AC500 V2 PLC system. It has two slots for communication modules and can be powered by 24 V DC. It has a wide operating temperature range of 0 to 60 degrees Celsius and an IP20 protection rating.

There are several variants of the TB521-ETH, each with slightly different features. For example, the TB521-ETH-ROB is a ruggedized version that is certified for use in harsh environments. The TB521-ETH-XC is a compact version that is designed for space-constrained applications.

If you are looking for more information about the ABB TB521-ETH, I recommend that you consult the ABB website or contact an ABB representative.

Here are some additional details about the ABB TB521-ETH that I found:

• Dimensions: 135 mm x 123.5 mm x 28 mm
• Weight: 0.186 kg
• Communication interfaces: D-SUB, RJ45, terminals
• Input voltage type: DC
• Protection rating: IP20
• Supply voltage: 24 V DC
• Ambient air temperature: Operation 0 to +60 °C

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