• Siemens 3RH1921-1CA10 SIRIUS 1NO Auxiliary Contact Block-YingZhou Automatization
  • Siemens 3RH1921-1CA10 SIRIUS 1NO Auxiliary Contact Block-YingZhou Automatization
  • Siemens 3RH1921-1CA10 SIRIUS 1NO Auxiliary Contact Block-YingZhou Automatization
  • Siemens 3RH1921-1CA10 SIRIUS 1NO Auxiliary Contact Block-YingZhou Automatization
  • Siemens 3RH1921-1CA10 SIRIUS 1NO Auxiliary Contact Block-YingZhou Automatization
  • Siemens 3RH1921-1CA10 SIRIUS 1NO Auxiliary Contact Block-YingZhou Automatization
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SIEMENS

Siemens 3RH1921-1CA10 SIRIUS 1NO Auxiliary Contact Block

Siemens 3RH1921-1CA10 SIRIUS 1NO Auxiliary Contact Block

$5.99 USD
$5.99 USD
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Model Number
YingZhou Industrial Automation | Product Information

Siemens 3RH1921-1CA10 SIRIUS Auxiliary Contact Block

1 NO | Front-Mounted | Screw Terminals | For Siemens 3RT1
✓ IN STOCK & AVAILABLE TO ORDER  |  Actual Product Photos  |  Model Verified
Specification Verified Product Data
Manufacturer Siemens AG
Catalog Number 3RH1921-1CA10
Product Family SIRIUS
Product Series 3RH19
Product Type Auxiliary Contact Block
Mounting Position Front-Mounted
Installation Method Snap-On
Contact Configuration 1 Normally Open (1 NO)
Normally Open Contacts 1
Normally Closed Contacts 0
Number of Poles 1
Terminal Connection Screw Terminals
Compatible Contactor Family Selected Siemens 3RT1 Contactors
Rated Insulation Voltage 690V AC
Rated Impulse Withstand Voltage 6kV
AC-12 Operational Current @ 230V 10A
AC-15 Operational Current @ 24V 6A
AC-15 Operational Current @ 230V 6A
AC-15 Operational Current @ 400V 3A
DC-13 Operational Current @ 24V 6A
Front Protection Rating IP20
Operating Temperature -25°C to +60°C
Mechanical Service Life 10,000,000 Operations
Electrical Endurance AC-15 @ 230V 200,000 Operations
Net Weight 19g
Packaging Box Quantity 10 Pieces (Actual Packaging)
Country of Origin Czech Republic
EAN / GTIN 4011209281332

Product Overview

The Siemens 3RH1921-1CA10 is a SIRIUS front-mounted auxiliary contact block designed for use with selected Siemens 3RT1 contactors. This one-pole accessory provides one normally open (1 NO) auxiliary contact for control and signaling circuits. Its front snap-on mounting design allows installation on compatible contactor assemblies, while screw terminals provide electrical connections for industrial control wiring. The manufacturer specifies a rated operational current of 6A at 230V AC-15 and 3A at 400V AC-15, together with an insulation voltage rating of 690V AC and a rated impulse withstand voltage of 6kV. The front protection rating is IP20, with an operating temperature range of -25°C to +60°C. The Siemens 3RH1921-1CA10 is intended as an auxiliary switching accessory and must not be used as a main power contactor. The supplied actual product photographs show the Siemens accessory, including its exact catalog number and electrical rating label. The original Siemens packaging also identifies the model 3RH1921-1CA10, the 1 NO contact arrangement, and a packaging quantity of 10 pieces. The device and packaging are marked Made in Czech Republic. Before ordering, please confirm your exact contactor model and the required auxiliary contact configuration.

Key Product Features

  • Siemens SIRIUS Auxiliary Contact Block — Industrial control accessory for compatible Siemens 3RT1 contactors.
  • 1 Normally Open Contact — Adds one auxiliary NO switching contact to a supported contactor assembly.
  • Front Snap-On Mounting — Designed for mounting directly onto compatible contactors.
  • Screw Terminal Design — Supports conventional industrial control wiring.
  • 6A AC-15 at 230V — Manufacturer-specified auxiliary circuit operational current.
  • IP20 Front Protection — Front protection rating for the specified accessory design.
  • Actual Product Photography — Real photographs of the Siemens accessory and its packaging support exact-model identification.

Actual Product Verification

✓ Actual Siemens accessory and packaging photographs supplied
✓ Packaging catalog number: 3RH1921-1CA10
✓ Physical device model marking: 3RH1921-1CA10
✓ Contact arrangement: 1 Normally Open (1 NO)
✓ Front-mounted auxiliary contact block design
✓ Screw terminal connection configuration
✓ Physical label identifies 690V AC insulation rating
✓ AC-15 operational current at 230V: 6A
✓ Packaging EAN: 4011209281332
✓ Original packaging marked Qty: 10
✓ Packaging and physical device origin: Czech Republic
✓ Exact packaging and device catalog numbers match
✓ Confirm required order quantity and specific contactor compatibility before shipment

In Stock & Available to Order

Siemens 3RH1921-1CA10 is marked in stock based on the supplied inventory information. This SIRIUS auxiliary contact block is offered for industrial maintenance, electrical control panel procurement and replacement accessory requirements. The device provides one normally open auxiliary contact and is designed for front mounting on compatible Siemens 3RT1 contactors. Actual photographs of the physical product and original packaging are available for model identification. The photographed packaging is labeled as a 10-piece box; please confirm whether your order requires individual pieces or the complete box. Verify the exact host contactor, contact arrangement, auxiliary circuit ratings and final dispatch quantity before ordering.

IN STOCK

Siemens 3RH1921-1CA10

Contact us for exact-model verification, individual pieces, complete box quantities and Siemens SIRIUS accessory sourcing. Please confirm the 1 NO configuration and compatibility with your specific 3RT1 contactor before ordering.

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