Close Menu
Get Parts Quote
Name
Company *
WhatsApp / WeChat (For Faster Quote) *
Email *
Address
City
State / Province / Region
Zipcode
Country
Quantity *
Part Number *
Manufacturer
Preferred Condition
Additional Information
Cancel
In Stock
Fast Shipping Available
Invensys 7400121-380
Invensys 7400121-380
Invensys 7400121-380
Invensys 7400121-380
Invensys 7400121-380
Invensys 7400121-380
· Product image is representative; revision or series may vary. Contact us to request a specific version.
Ships by Wednesday, September 16

7400121-380

Relay external terminator

Shipping Information

  • For inventory products, we support same day shipping upon payment.
  • For urgent needs, we offer same-day shipping on most items for orders placed before 2:00 PM UTC+8 Simply mention your preferred next-day shipping when place the order, and your order will be prioritized to minimize downtime.
  • For indent items, typical turnaround is 1-3 weeks, depending on parts availability and scarcity.
Customs & Documentation
We prepare clear, order-specific documentation for every international shipment, including the commercial invoice, packing list and available product or compliance documents. Before dispatch, our logistics team confirms the consignee details, declared value, shipping terms and destination requirements with you. Tracking information is provided after shipment, helping your team prepare for import clearance with confidence.
Documents checked before dispatch · Shipment details confirmed · Global tracking provided
Payment
Payment is by bank wire only in RMB/CNY, GBP, EUR or USD. Amikon does not accept credit cards or provide credit terms. Cleared payment is required before shipment unless the written quotation expressly states otherwise.
Product Condition
Factory New These are new and current items that are procured directly from the manufacturer.
New In Sealed Package Parts are new. They have not been used and still have their original package seal intact.
New in Original Package These parts are new. The packages were not originally sealed by their original manufacturer.
Quantity
Mobile *
Country/Region *
E-mail *
Company
Content *
(gif, jpg, jpeg, png, bmp, doc, docx, xls, xlsx, ppt, pdf, csv)
For more information on how your data is processed and stored by Amikong please read our privacy policy.
  • 20+

    years in automation
  • ISO 9001

    certified quality system
  • 12 months

    amikon warranty
  • 2-hour reply

    from your account manager
  • Success Story

    solutions in action
PRODUCT DESCRIPTION

7400121-380 Relay external terminator for the Tricon safety instrumented system

Triconex 7400121-380 is a Relay external terminator used with the Tricon safety instrumented system. The complete order reference identifies the required hardware and must be matched to the installed chassis, baseplate, cable or field termination.

Manufacturer documentation lists the applicable electrical, signal and installation characteristics. Verify the nameplate, hardware revision, connector layout and project records before replacement.
ACTUAL APPLICATIONS

7400121-380 isolates sixteen external relay circuits

The external terminator places interposing relay contacts between Tricon I/O and field equipment that requires contact isolation.
  • 01 · INTERPOSING RELAYS

    Separate controller and load circuits

    Wire each coil and contact set to its assigned channel while maintaining the required external supply segregation.
  • 02 · CONTACT DUTY

    Match the connected field load

    Confirm voltage, current, suppression and fuse selection against the relay-contact rating before service.
  • 03 · END-TO-END TEST

    Trace all sixteen relay operations

    Command the source point and verify coil pickup, contact transition and final-device response for every used channel.

Technical specifications for 7400121-380

  • Product Model
    7400121-380
  • Product Parameters
    Relay external terminator
  • Place of shipment
    Xiamen, China
  • In stock
    1 unit
  • Manufacturer
    Invensys
  • Component Type
    Relay external terminator
  • Order Reference
    7400121-380
  • System Platform
    Triconex safety control system
  • Primary Function
    Interposing relay field termination
  • Circuit Capacity
    16 relay contact channels
  • Nominal Supply
    24 V DC coil power
  • Compatible Hardware
    Tricon digital I/O circuits
  • Mounting Arrangement
    DIN-rail external terminator
  • Connection Method
    Keyed controller and field interfaces
  • Wiring Identification
    Numbered terminals with endpoint labels
  • Operating Environment
    Industrial control cabinet service
  • Grounding Practice
    Dedicated protective-earth connection
  • Maintenance Method
    Controlled de-energised replacement
  • Inspection Requirement
    Verify revision connectors and fasteners
  • Commissioning Check
    Test every affected signal path
View all additional

Alternative Names

7400121-380 Triconex 7400121-380 Invensys 7400121-380
SYSTEM & REPLACEMENT CHECK

Information needed before ordering

Three direct checks to secure your system integration and minimize ordering risks.

Information

System integration Replacement check Manuals & support
SYSTEM CONFIGURATION

Match 7400121-380 to the installed Triconex configuration

Triconex 7400121-380 is a Relay external terminator for the Tricon safety instrumented system. Verify the complete product identity and controller generation before integration.
Match all mating modules, baseplates, termination panels, cables, field power and signal assignments. Preserve approved project records.
Complete the manufacturer-recommended diagnostics and site functional test after installation.

Features:

  • Exact product identity: 7400121-380
  • Product class: Relay external terminator
  • Model-specific values listed in the specifications
The Triconex 7400121-380 requires its ratings, wiring and installed configuration to be checked before system integration and commissioning.
INTERCHANGEABILITY

Verify the full replacement identity before commissioning

Replace Triconex 7400121-380 only after matching the complete order reference, hardware revision, connector or terminal arrangement and installed function.
Record the existing slot, cable and field-terminal labels before removal. Transfer only configuration data approved for the exact hardware and project.
After installation, verify power, communications, every connected point, alarm response and the complete safety function.

Features:

  • Match the complete 7400121-380 identifier
  • Compare revision, connectors and mating hardware
  • Test diagnostics and field operation before service
The Triconex 7400121-380 requires replacement verification against the installed hardware and project documentation.
DOCUMENTATION STATUS

Browse the Manuals, Datasheets, Official Documents, Links

Important Notice: Available documents must be matched to the complete 7400121-380 identity, installed system and applicable revision.

Features:

  • Model-specific data sheet prepared for 7400121-380
  • Manufacturer guide reference identified before order
  • Installation steps follow Triconex maintenance controls
Documentation for Triconex 7400121-380 must match the installed system and revision; confirm manual availability in the written quotation.

Important notice

Manuals, software, firmware, cables, calibration data and accessories are included only when listed in the quotation. AMIKON is an independent supplier and is not affiliated with or authorised by the manufacturer.
This content has been produced using multiple sources. Takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
BUYER INFORMATION

Commercial terms without hidden steps

Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
  • 01

    Shipping & delivery

    Dispatch
    Eligible stock: same / next day
    Carriers
    DHL, FedEx or UPS
    Ship from
    Xiamen, China
    Packed size
    48.2 × 17.7 × 4.3 cm
    Shipping weight
    1.7 kg
  • 02

    Payment & customs

    Payment
    Bank transfer (T/T)
    Currencies
    USD · EUR · GBP · RMB
    Credit cards
    Not accepted
    HS reference
    8538900000
    Origin
    United States
  • 03

    Warranty & returns

    Warranty
    12 months from AMIKON
    Inspection
    Label, condition and packing checks
    Returns
    Prior RMA authorisation required
    Compatibility
    Confirm before order
    OEM warranty
    Does not apply
Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
  • Part checked

    Full suffix recorded
  • Condition checked

    Label and appearance
  • Packing checked

    Antistatic protection
  • Tracking supplied

    Established couriers
  • Sandy Lin

    Dedicated account manager · 15+ years
FREQUENTLY ASKED QUESTIONS

Questions buyers ask about 7400121-380

Direct answers about identity, compatibility, stock, warranty, payment and shipping.
  • How is the relay external terminator used for primary function?

    Primary Function is Interposing relay field termination. Match this function to the approved system design.
  • Which value defines circuit capacity on the relay external terminator?

    Circuit Capacity is 16 relay contact channels. Use this value when checking the installed circuit.
  • Why must technicians record compatible hardware before servicing the relay external terminator?

    Compatible Hardware is Tricon digital I/O circuits. Photograph labels and preserve the maintenance record.
  • Where is the mounting arrangement applied in this relay external terminator installation?

    Mounting Arrangement is DIN-rail external terminator. Keep the documented arrangement unchanged during installation.
  • What limits the nominal supply on the relay external terminator used with Tricon digital I/O circuits?

    Nominal Supply is 24 V DC coil power. Confirm the supply and connected load before energising.
  • How should wiring identification be documented on the relay external terminator?

    Wiring Identification is Numbered terminals with endpoint labels. Trace each identifier at both ends of the connection.
  • Which inspection verifies inspection requirement for this relay external terminator?

    Inspection Requirement is Verify revision connectors and fasteners. Compare the nameplate revision, connectors and mechanical fit.
  • What commissioning step proves commissioning check on the relay external terminator used with Tricon digital I/O circuits?

    Commissioning Check is Test every affected signal path. Test every affected path before return to service.
READY TO VERIFY YOUR PART?

Get a 7400121-380 quote with price, lead time and revision check.

Trusted by 5,000+ plants worldwide | Backed by our vast inventory of top-tier control parts, drives and servo motors, fast shipments are dispatched to cover your urgent needs. ABOUT US >>
Disclaimer: Amikon Limited sells new and surplus products and develops channels for purchasing such products. Amikon Limited is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because Amikon Limited is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. Amikon Limited is not an authorized distributor, dealer, or representative of the products displayed on this website. All product names, trademarks, brands, and logos used on this website are the property of their respective owners. The description, explanation, or sale of products with these names, trademarks, brands, and logos is for identification purposes only and is not intended to indicate any association with or authorization from any rights holder.
Product

Product Browsing History