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Model / Part No.
1SAP112100R0170
Product ID
#146
The ABB 1SAP112100R0170 is the order code for the TB521-ETH terminal base, a two-slot module carrier with an Ethernet interface for the ABB AC500 PLC family, documented on ABB's own product pages as a terminal base with two slots, 24 VDC supply and spring terminals. The base carries the CPU plus one communication module and provides two RS232/RS485 serial interfaces alongside Ethernet, making it a common spare for AC500 cabinets wired with spring terminals. Distributor listings record a net weight around 0.186 kg for this revision, and newer stock ships under the current code 1SAP112100R0270 with screw terminals. Confirm terminal style and stock condition with the supplier before ordering.
| Manufacturer | ABB |
| Model Number | 1SAP112100R0170 |
| Type Designation | TB521-ETH |
| Slots | 2 slots (per ABB product page) |
| Interfaces | Ethernet; 2x RS232/RS485 serial |
| Supply | 24 VDC |
| Terminals | Spring terminals (this revision) |
ABB AC500 PLC family
TB521 family: 1SAP112100R0160 (ARCNET), 1SAP112100R0170 (ETH, spring terminals), 1SAP112100R0270 (ETH, current revision with screw terminals). Match terminal style to your wiring.