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PRODUCT DESCRIPTION
3RH5921-1FA22 four-pole auxiliary contact block
Siemens 3RH5921-1FA22 is a four-pole auxiliary contact block for the Siemens SIRIUS product family. It provides 4 for distributed automation, machine control, and industrial communication tasks.
The assembly uses the documented connection, channel, and diagnostic arrangement for this exact order code. Match the complete suffix, terminal method, electrical ratings, and installed system revision before replacement or commissioning.
The assembly uses the documented connection, channel, and diagnostic arrangement for this exact order code. Match the complete suffix, terminal method, electrical ratings, and installed system revision before replacement or commissioning.
BEFORE YOU BUY
Confirm the complete four-pole auxiliary contact block
ACTUAL APPLICATIONS
Application context for 3RH5921-1FA22
3RH5921-1FA22 supports documented Siemens SIRIUS functions in distributed automation, machine control and process-industry systems where the exact order code must match.
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01 · AUTOMOTIVE MANUFACTURING
Automotive Production and Assembly
Body production linesPowertrain assembly cells -
02 · WATER AND WASTEWATER
Water Treatment and Distribution
Pumping station automationTreatment process monitoring -
03 · FOOD AND PACKAGING
Food Processing and Packaging
Packaging machine controlConveyor handling systems
Technical specifications for 3RH5921-1FA22
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Product Model3RH5921-1FA22
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Product ParametersFour-pole auxiliary contact block
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In stock10 units
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ManufacturerSiemens
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Auxiliary contacts4
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Normally open contacts2
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Normally closed contacts2
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Contact arrangementEN 50005
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Mounting methodFront snap-on
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Compatible contactor sizesS2 and S3
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Compatible contactor types3RT5.3 and 3RT5.4
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Accessory classAuxiliary switch block
View all additional
Alternative Names
3RH5921 1FA22
Siemens SIRIUS four-pole auxiliary contact block
3RH5921-1FA22 industrial spare
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 INTEGRATION
Integrate 3RH5921-1FA22 four-pole auxiliary contact block
3RH5921-1FA22 is the documented four-pole auxiliary contact block for the Siemens SIRIUS family. Its integration basis includes auxiliary contacts: 4, normally open contacts: 2, and normally closed contacts: 2, so the connected circuit or network must be engineered to those exact limits.
The installed arrangement must also match contact arrangement: en 50005, mounting method: front snap-on, and compatible contactor sizes: s2 and s3. Verify the mating terminal, conductor method, power group, and controller configuration before energizing the product, especially where a neighboring order code uses a different connection or channel arrangement.
During commissioning, apply the documented supply and interface conditions, test each affected channel or communication path separately, and compare field behavior with controller diagnostics. Record the final wiring, addressing, status indications, and measured results so the 3RH5921-1FA22 configuration can be reproduced during future maintenance.
Features:
- Adds two normally open auxiliary signaling contacts
- Adds two normally closed auxiliary signaling contacts
- Mirrors contactor operation into control and indication circuits
The 3RH5921-1FA22 four-pole auxiliary contact block requires appropriate configuration before system integration and commissioning.
INTERCHANGEABILITY
Verify 3RH5921-1FA22 four-pole auxiliary contact block
Use the complete 3RH5921-1FA22 order code when replacing this four-pole auxiliary contact block; a similar housing or family number does not confirm interchangeability. Compare auxiliary contacts: 4, normally open contacts: 2, and normally closed contacts: 2 with the removed product and the current engineering record.
Before removal, document terminal numbers, cable routing, switch positions, mounting orientation, and adjacent module order. The replacement must also satisfy contact arrangement: en 50005, mounting method: front snap-on, and compatible contactor sizes: s2 and s3, because these details determine whether the installed electrical and mechanical arrangement can be reproduced.
After fitting the verified 3RH5921-1FA22, restore the controlled configuration and repeat the applicable continuity, signal, load, or network tests. Confirm normal status indication and controller diagnostics under the documented operating conditions, then retain the nameplate photographs, configuration record, and acceptance results with the asset history.
Features:
- Provides electrical interlocking between coordinated contactors
- Supplies feedback contacts for controller status monitoring
- Supports seal-in and permissive control circuit logic
The 3RH5921-1FA22 four-pole auxiliary contact block requires replacement verification against the complete installed configuration and current manufacturer documentation.
DOCUMENTATION STATUS
Browse the Manuals, Datasheets, Official Documents, Links
Important Notice: The linked files are Amikong-hosted reference documents. Match their product identity and scope to the supplied assembly, and consult the applicable manufacturer instructions before use. Accessories and additional documents are included only when expressly listed in the quotation.
Features:
- Snaps onto the front of compatible S2 and S3 contactors
- Keeps auxiliary wiring attached to the contactor assembly
- Allows contact-function expansion without replacing the contactor
Documentation for the 3RH5921-1FA22 four-pole auxiliary contact block must be checked for document applicability before installation or commissioning.
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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.
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Shipping & delivery
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DispatchEligible stock: same / next day
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CarriersDHL, FedEx or UPS
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Ship fromXiamen, China
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Packed size5.10 × 6.30 × 4.50 cm
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Shipping weight0.07 kg
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Payment & customs
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PaymentBank transfer (T/T)
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CurrenciesUSD · EUR · GBP · RMB
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Credit cardsNot accepted
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HS reference8536500000
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OriginGermany
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Warranty & returns
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Warranty12 months from AMIKON
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InspectionLabel, condition and packing checks
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ReturnsPrior RMA authorisation required
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CompatibilityConfirm before order
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OEM warrantyDoes not apply
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Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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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 3RH5921-1FA22
Direct answers about identity, compatibility, stock, warranty, payment and shipping.
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Which rating controls the four-pole S2/S3 contact block?
Use the documented Auxiliary contacts 4, Normally open contacts 2, and circuit limits for this exact four-pole S2/S3 contact block. -
What must be matched before wiring the four-pole S2/S3 contact block?
Match its complete order code, Auxiliary contacts 4, terminal method, and installed equipment interface. -
How should the four-pole S2/S3 contact block be commissioned?
Test the four-pole S2/S3 contact block one circuit or channel group at a time and record the observed status. -
Which compatibility check protects the four-pole S2/S3 contact block replacement?
Confirm the stated Normally open contacts 2, compatible system, terminal base, and engineering configuration. -
What should be photographed around the four-pole S2/S3 contact block?
Capture labels, wiring positions, switches, adjacent hardware, and mounting orientation before removal. -
Which test record belongs with the four-pole S2/S3 contact block?
Archive the continuity or signal test, configuration result, visible condition, and final acceptance status. -
What should an MRO buyer request for the four-pole S2/S3 contact block?
Request the exact four-pole S2/S3 contact block order code, required condition, quantity, destination, and inspection documents. -
How should a distributor inspect the four-pole S2/S3 contact block?
Compare the label, construction, connections, and documented Auxiliary contacts 4 before releasing the shipment.
READY TO VERIFY YOUR PART?
Get a 3RH5921-1FA22 quote with price, lead time and revision check.
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