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ABB DX531 product image front view
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ABB DX531 AC500 S500 8-Input 4-Relay Digital Input/Output Module

ABB · AC500 / S500
DX531
ABB DX531 is an S500 digital input/output module with eight 120/230 V AC inputs and four isolated changeover relay outputs for AC500 expansion systems.
Input groups
4 × 2
Relay groups
4 × 1
Lifecycle
Active
Standard S500 article · terminal unit required · relay circuits need external protection
Mixed digital I/O
8 + 4
AC inputs · relays
120 / 230 V AC sensing
Changeover contacts
Module-wise isolation
INQUIRE NOW
ONE YEAR WARRANTY
FAST DELIVERY
24/7 SERVICE
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  • Worldwide delivery
  • Delivery from stock
  • In stock really means in stock
  • No account required
  • Shipped from the China
Product Specifications
Manufacturer ABB
Item number DX531
Country of Origin Switzerland
Lead Time 2-3 DAYS
After-Sales Support For after-sales support, please contact May.
HS Code / Commodity code Please confirm the destination before shipping.
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
 
AC input and relay envelope
Signal thresholds, contact duty and isolation define the mixed-I/O boundary.
The selected ABB values describe the module channels rather than an accessory or adjacent S500 variant.
01Input frequency
47–63 Hz
02Input characteristic
EN 61131-2 Type 2
03Signal 0 range
0–40 V AC
04Signal 1 range
74–265 V AC
05Typical input delay
20 ms
06Resistive contact duty
3 A at 230 V AC
07Relay operation
Non-latching
08Digital-channel isolation
2500 V AC
Terminal units
TU531 / TU532
Country of origin
Switzerland
Module weight
0.300 kg
Official lifecycle
Active
Order review
Confirm the connected AC500 hardware, field wiring and terminal accessories before ordering.
02
Mixed-voltage commissioning
Separate the high-voltage input bank from protected relay load circuits.
A safe exchange preserves terminal geometry, process supply, load suppression and cabinet clearances.
Provide an external 6 A gL/gG fuse or circuit breaker for each DX531 relay output and follow the ABB load-specific suppression guidance.
01
Verify the terminal base
Use the compatible S500 terminal unit and confirm that the installed screw or spring connection matches the field conductors.
02
Map input groups
Trace the four two-channel AC input groups and confirm the field voltage and frequency before energizing the module.
03
Protect each contact
Install the specified external branch protection and select suppression suited to every inductive AC or DC load.
04
Prove channel states
Check the eight input LEDs, four relay indicators, process-supply LED and error diagnostics during a controlled test.
Process supply
24 V DC
Rated UP fuse
10 A fast
Relay switching, resistive
10 Hz maximum
Mounting
Horizontal / vertical with derating
Official ABB sources: DX531 data sheet, product record and AC500/S500 hardware documentation.
03
 
Buyer decision notes
Questions customers ask about ABB DX531.
Use these answers to evaluate I/O integration, engineering impact and ordering requirements.
Clear, model-specific information for a confident purchasing decision.
Which field signals can ABB DX531 monitor and switch in an AC500 station?
ABB DX531 accepts eight 120/230 V AC digital inputs and provides four isolated changeover relay outputs for separately protected field loads.
01
Which terminal unit should be checked before ordering ABB DX531?
ABB lists TU531 and TU532 terminal units for the standard module. Match the installed screw or spring connection and inspect conductor preparation before exchange.
Where does ABB DX531 fit in an automation application?
The module suits AC500 or distributed S500 stations that need mains-level status sensing together with relay switching in one mixed digital I/O position.
02
What is the manufacturer lifecycle phase for ABB DX531?
ABB lists order code 1SAP245000R0001 as Active. Requested condition, quantity, terminal-unit needs and delivery are confirmed at quotation time.
Can a transistor-output S500 module directly replace ABB DX531?
No direct replacement should be assumed. Compare AC input levels, relay contact type, load current, isolation, terminal unit, protection and the controller hardware configuration.
03
What information is needed for an ABB DX531 manual and price request?
Send the complete order code, front and side labels, terminal-unit type, connected load details, required condition, quantity, destination and requested delivery date.
04 · Professional Team
A professional team you can trust for complex automation sourcing.
Careful identification and patient communication support every stage of the purchasing decision.
Professional automation sourcing team in a project meeting
Collaborative project review
10+
Years of Industry Experience
Our team members have an average of more than 10 years of industry experience. We have worked with customers worldwide, including those from India, Germany, Sweden, Italy, Russia, Venezuela, Israel, and many other countries. Throughout our careers, we have collectively completed over 3,000 orders and established long-term business relationships with customers across nearly 30 countries.
Professional Product Judgment
We can often identify a product’s manufacturer, series, configuration, and function from its model number or nameplate photo. We also understand how revisions, firmware, and specifications affect compatibility and whether an alternative model can be used safely.
Sincere and Patient Service
Our team treats every inquiry sincerely and answers every question patiently. Even for complex requests, we verify and respond to each detail instead of providing a rushed or uncertain answer.
In Practice
An Indian customer urgently needed a discontinued control module after several suppliers reported no stock. We identified its exact revision and function from the nameplate, checked compatible alternatives, and contacted factory and warehouse channels to locate matching inventory. After installation, the customer confirmed that the module operated correctly and later asked us to source additional spare parts.
In Practice
A German customer sent a mixed list of automation products and asked repeated questions about revisions, condition, photos, and delivery. Our team organized the requirements, checked every item, and replied point by point. The customer said our detailed communication made the purchasing decision easier and continued sending us new inquiries.
05
 
Transaction Cases
Sincere Cooperation, Long-Term Trust
Real service experience shaped by verification, communication and dependable follow-through.
CASE 01
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.
CASE 02
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.
CASE 03
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
 
Cross-brand sourcing desk
More automation options for your next project.
A mixed selection for maintenance, retrofit and hard-to-find spare-part requests.
Sourcing support
Exact part-number review
Mixed-brand list consolidation
Availability and delivery coordination
Share your brand, model and required date.
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CLTG38EXPN01
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167A.000367
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A16B
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HPBYB6FF 316SS-PTFE
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140ACO13000
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ABB 1SBL371001R8111 A63-30-11
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PCO3000ES0
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C-OR-0011M-800
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NC-540-1-1-5
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140CHS32000
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KJ2003X1-BA2 12P2093X112
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PR120.03
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Request a quote
Ask about ABB DX531.
Send the full nameplate, installed system, condition, quantity, destination and required date.

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