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ABB TU531 AC500 120/230 V AC Relay Terminal Unit

ABB | AC500 S500INQUIRY DESK

ABB TU531 AC500 120/230 V AC Relay Terminal Unit

ABB TU531 is an AC500 and S500 terminal unit for 120/230 V AC input and relay-output modules, using front screw terminals for panel wiring.

CHANNEL MAPACTIVE
32terminal channels in four groups
SIGNAL VOLTAGEUp to 300 V AC
TERMINAL STYLEFront screw
Selection note: Verify the inserted I/O module, voltage separation, conductor rating and screw-terminal preference before configuring the station.
 Top Quality One Year Warranty Worldwide Shipping
Request an ABB TU531 Quote
  • Worldwide delivery
  • Delivery from stock
  • In stock really means in stock
  • No account required
  • Shipped from the China
Product Specifications
Manufacturer ABB
Item number TU531
Country of Origin Germany
Lead Time 2-3 DAYS
After-Sales Support For after-sales support, please contact May.
HS Code / Commodity code 85389091
FAQ

Quotes are valid for 30 days from the day the quote is received unless stated otherwise at the time of quotation.

Yes,we offer one year warranty for all new products.

Yes. We worked with FEDEX/DHL/TNT/UPS/ allowing us to provide swift global delivery of parts to any corner of the world.

Normally 3-5 working days,some remote areas 5-7 days more.

Product information
01

ABB TU531 Official High-Voltage Terminal Data

ABB-published channel, voltage, current, environment and mechanical limits.

OFFICIAL 01Relay and AC-input terminal unitProduct role
OFFICIAL 02120/230 V ACSupported supply class
OFFICIAL 03Front screw terminalsTerminal technology
OFFICIAL 0432Number of channels
SIGNAL & SYSTEM DATAModule-specific electrical, channel and interface values.
CHANNEL DISTRIBUTION4 groups of 8 channels
SUPPLY-TERMINAL VOLTAGE30 V DC maximum
SUPPLY-TERMINAL TOTAL CURRENT10 A maximum
SIGNAL-TERMINAL VOLTAGE300 V AC maximum
SIGNAL-TERMINAL CURRENT3 A maximum
SIGNAL TERMINAL RANGES1.0–1.7 through 4.0–4.7
SUPPLY TERMINAL RANGES1.8–4.8 and 1.9–4.9
GROUNDINGDIN rail or wall-mounting screws
CONNECTION & PROTECTIONOfficial connection, protection and integration requirements.
AC SUPPLY TOLERANCE100–240 V AC, -15%/+10%
SUPPLY FREQUENCY50/60 Hz, -6%/+4%
SYSTEM PROTECTIONSELV/PELV for extra-low-voltage circuits
HOUSING CLASSIFICATIONUL 94 V-2
ENVIRONMENT & INSTALLATIONDocumented mechanical and operating conditions.
HORIZONTAL OPERATION0 oC to +60 oC
VERTICAL OPERATION0 oC to +40 oC with 50% group-load derating
STORAGE AND TRANSPORT-40 oC to +70 oC
HUMIDITY95% maximum, without condensation
WEIGHTApproximately 200 g
DEGREE OF PROTECTIONIP20 when fully assembled
MOUNTING35 mm top-hat rail or M4 screws
SHOCK RESISTANCE15 g, 11 ms, half-sinusoidal
Safety note: The inserted I/O module determines the channel allocation; hazardous-voltage separation, conductor class and protective measures must match the complete station design.
02

How ABB TU531 Connects AC500 Relay and AC I/O

High-voltage field termination, grouped channels and plug-in I/O integration in one coordinated view.

01

Four grouped terminal banks

Thirty-two channels are arranged as four banks of eight for the inserted module.

02

AC signal termination

Signal terminals accept the documented voltage class within the connected I/O channel limits.

03

Separate supply positions

Dedicated .8 and .9 terminal positions handle supply distribution apart from signal points.

04

Module-dependent allocation

The electronic module defines which terminals operate as AC inputs, relay outputs or supplies.

05

Functional grounding path

The mounting rail or wall screws establish the documented grounding connection.

06

Panel-service access

Front screw terminals support vertical conductor entry for organized cabinet wiring.

SEPARATE

Keep voltage classes correctly segregated.

RATE

Check conductor and terminal current.

VERIFY

Confirm the inserted I/O module.

03

ABB TU531 Buyer FAQ

Configuration guidance for AC field circuits, terminal selection, lifecycle review and documentation.

?

Which I/O hardware is designed to use ABB TU531?

ABB documents TU531 for AC500 and S500 modules with 115–230 V AC inputs and/or approved relay outputs. The electronic module must be checked for exact channel assignments.

?

What electrical boundaries matter when wiring ABB TU531?

The field-signal terminals are rated up to 300 V AC and 3 A, while the dedicated supply positions are limited to 30 V DC and 10 A total.

?

How does ABB TU531 differ from the ABB TU532 terminal unit?

TU531 uses front screw terminals. TU532 is the spring-terminal version, and TU532-H adds hot-swap capability; these distinctions require a wiring and maintenance review.

?

Is ABB TU531 still listed as an active ABB product?

Yes. ABB lists TU531, order code 1SAP217200R0001, as Active, while actual stock and delivery remain quotation-specific.

?

Can ABB TU531 replace another terminal unit without rewiring?

ABB does not state that TU531 is a universal drop-in replacement. Terminal technology, voltage class, channel allocation and hot-swap requirements must be compared first.

?

Which project information should accompany an ABB TU531 manual or price request?

Provide the TU531 model, the plug-in I/O module, field voltage, conductor type, panel orientation, quantity and delivery destination for a matched response.

04

About Our Company

Company experience, global reach, inventory and long-term customer support.

Automation supply team coordinating warehouse inventory
01

Years of Global Experience

With 20+ years of industry experience, we serve customers worldwide and have built long-term relationships across the UK, Russia, UAE, India, Venezuela, and more.

02

Professional Support Team

Our experienced team provides reliable pre-sales and after-sales support, helping customers select suitable products and resolve purchasing concerns.

03

Wide Range of Brands

We supply leading automation brands covering PLCs, DCS, I/O modules, drives, motors, power supplies, communication modules, and more.

04

Large In-Stock Inventory

A wide range of products is available from stock, including discontinued, obsolete, and hard-to-find parts, helping reduce sourcing time.

05

Honesty & Trust

We value long-term cooperation and treat every customer with honesty, respect, responsibility, and care.

06

Your Trusted Automation Partner

From a single replacement part to complete automation projects, we are ready to support your needs and build a long-term partnership.

05

Real Automation Procurement Cases

Sincere cooperation, practical support and long-term trust across international projects.

01PROCUREMENT CASE

Russia

A Russian customer urgently needed a replacement for a discontinued automation component. After reviewing the product label, technical parameters, and application details, our engineers recommended a compatible alternative and provided photos and test videos before shipment. The alternative performed well, enhancing the customer's confidence in our technical capabilities and leading to multiple repeat orders.

02PROCUREMENT CASE

India

An Indian customer still had doubts after initial online communication with us, so they visited our company in person for a face-to-face meeting and product inspection. This visit increased the customer's trust and led to the successful placement of their first order. Over the next few years, we completed multiple orders and established a stable, long-term partnership.

03PROCUREMENT CASE

Venezuela

A Venezuelan customer needed a specific automation component and compared products and services from several suppliers online. After nearly three weeks of careful consideration, our sincere communication, professional service, and reliable product quality won the customer's trust. After receiving the product and using it for several weeks without any problems, the customer gave us positive feedback and subsequently placed multiple orders.

06

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