TB521-ETH 1SAP112100R0170
TB521-ETH 1SAP112100R0170
TB521-ETH 1SAP112100R0170
TB521-ETH 1SAP112100R0170
TB521-ETH 1SAP112100R0170
TB521-ETH 1SAP112100R0170
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TB521-ETH

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ABB TB521-ETH is an AC500 terminal base supplied under current order code 1SAP112100R0270 and earlier order code 1SAP112100R0170, with one CPU position, two communication slots, Ethernet, and two serial interfaces.
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Technical specifications for TB521-ETH

  • Manufacturer:
    ABB
  • Part Number:
    TB521-ETH
  • Product Family:
    ABB AC500
  • Product Type:
    AC500 V2 Terminal Base
  • Stock:
    1
  • ABB Order Codes:
    1SAP112100R0270 (current); 1SAP112100R0170 (earlier)
  • Processor Positions:
    1
  • Communication Module Positions:
    2
  • Integrated Interfaces:
    Ethernet; 2 configurable RS232/RS485
  • Weight:
    0.186 kg
  • Estimated shipping dimensions:
    14.7x13.1x4cm
  • Tariff Code:
    85389091
  • Country of origin:
    Sweden
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Revision Matching Interface Review Installation Check

Features:

  • One core model: R0270 and R0170 are documented order-number revisions of TB521-ETH.
  • Module positions: The base provides one CPU position and two communication-module positions.
  • Integrated connections: The current revision includes Ethernet and two configurable RS232/RS485 interfaces.
TB521-ETH is the ABB AC500 mounting and connection base for one CPU and two communication-module positions.

The two order numbers belong on one product page, while revision-specific weight and package data remain separately identified.

Before replacement, record the full order number, installed CPU, module sequence, cable destinations, terminal markings, and cabinet clearance.

The ABB TB521-ETH terminal base is available for quotation and revision-matching support from Apter Power, subject to current inventory and sourcing confirmation.
ABB TB521-ETH 1SAP112100R0270 / 1SAP112100R0170 Manuals and Resources Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
ABB TB521-ETH 1SAP112100R0270 / 1SAP112100R0170 AC500 V2 Terminal Base Specs

General

  • ManufacturerABB
  • ModelTB521-ETH 1SAP112100R0270 / 1SAP112100R0170
  • ConditionNew Original ready stock
  • Product FamilyABB AC500
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Current revision: Match 1SAP112100R0270 in full.
  • Earlier revision: Match 1SAP112100R0170 in full.
  • Weight check: Use the value documented for the exact order-number revision.
  • Replacement boundary: Do not assume universal interchangeability without a system review.
  • Ethernet path: Record the switch port, address plan, and cable label.
  • Serial interfaces: Document RS232 or RS485 mode and field wiring.
  • Communication modules: Identify both fitted modules and connector assignments.
  • I/O expansion: Trace the downstream bus and terminal sequence.
  • Rail mounting: Inspect DIN-rail engagement and service clearance.
  • Connector condition: Check pins, sockets, terminals, and strain relief.
  • Module seating: Confirm the CPU and both communication positions are engaged.
  • Acceptance: Verify startup, module recognition, Ethernet, serial paths, and I/O expansion.
Description

The ABB TB521-ETH is an AC500 terminal base associated with current order code 1SAP112100R0270 and earlier order code 1SAP112100R0170. ABB documentation describes one CPU position, two communication-module positions, and an Ethernet connection for this core model.

The ABB TB521-ETH current R0270 product data lists two configurable RS232/RS485 serial interfaces, a 0.186 kg net weight, and a 147 x 131 x 40 mm package. The earlier R0170 hardware manual lists a 0.215 kg net weight, so revision-specific data should remain identifiable.

Before ordering ABB TB521-ETH, match the complete order number on the installed label and review the CPU, communication modules, serial wiring, mounting space, and connector layout. R0170 and R0270 are separate ABB order-number revisions and should not be described as universally interchangeable.

Alternative Names
TB521-ETH TB521 ETH TB521ETH ABB TB521-ETH ABB AC500 TB521-ETH 1SAP112100R0270 1SAP112100 R0270 1SAP112100R0170 1SAP112100 R0170 AC500 two-slot terminal base
Technical notes
ABB TB521-ETH provides one CPU position, two communication-module positions, Ethernet, and two serial interfaces. Verify whether the required order number is 1SAP112100R0270 or the earlier 1SAP112100R0170 before ordering.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How should buyers select between TB521-ETH 1SAP112100R0270 and 1SAP112100R0170?
Read the complete installed label and compare the CPU generation, two communication-module positions, Ethernet and serial connections, connector layout, and AC500 project records.
Are TB521-ETH 1SAP112100R0270 and 1SAP112100R0170 always compatible and interchangeable?
ABB documents both as TB521-ETH terminal bases with two communication-module positions, but the CPU generation, installed modules, interface arrangement, mechanical fit, and project documentation must still be checked.
Can TB521-ETH 1SAP112100R0270 / 1SAP112100R0170 replace TB511-ETH or TB541-ETH without a layout review?
No. ABB documents different communication-module capacities for these terminal-base sizes, so the complete CPU assembly, module count, rail space, and connector arrangement must be reviewed.
What should be recorded before removing TB521-ETH 1SAP112100R0270 / 1SAP112100R0170?
Record the CPU and module sequence, Ethernet path, serial modes, terminal numbers, bus connections, rail position, cable labels, and cabinet clearance.
What should be checked if an AC500 system does not start after replacing TB521-ETH 1SAP112100R0270 / 1SAP112100R0170?
Check power, CPU and module seating, connector engagement, bus continuity, Ethernet settings, serial wiring, termination, and controller diagnostics.
How should TB521-ETH 1SAP112100R0270 / 1SAP112100R0170 operation be confirmed?
Verify module recognition, controller startup, Ethernet communication, both serial paths, I/O expansion, alarms, and project-specific acceptance tests.
Which installation conditions can affect TB521-ETH 1SAP112100R0270 / 1SAP112100R0170 reliability?
Review DIN-rail engagement, service clearance, connector strain, vibration, grounding, temperature, humidity, and ventilation against ABB AC500 guidance.
What should an RFQ for TB521-ETH 1SAP112100R0270 / 1SAP112100R0170 include?
State the required revision, quantity, condition, destination, delivery date, installed CPU, both communication modules, and required terminal accessories.

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