3RH1921-1CA01

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$3.61
$3.61
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Overview: Siemens 3RH1921-1CA01 Front-Mounted Auxiliary Contact Block

The Siemens 3RH1921-1CA01 is a front-mounted auxiliary contact block designed to provide an additional normally closed (NC) contact for SIRIUS contactors (sizes S0 to S12). This compact device snaps onto the front of compatible contactors and interfaces electrically via screw terminals. It enhances control and signaling capabilities in motor control and automation systems, supporting reliable switching up to 690 V AC.

Key Features

  • Contact Configuration: Contains 1 normally closed (NC) instantaneous contact for auxiliary signaling.
  • Mounting: Simple snap-on front mounting for easy integration with 3RT1 contactors.
  • Electrical Ratings: Supports operational currents up to 10 A at 24 V and 6 A at 230 V AC.
  • Durability: Long mechanical service life up to 10 million operating cycles and electrical endurance up to 200,000 cycles at AC-15 load.
  • Screw Terminals: Easy wiring with reliable screw-type terminals.
  • Protection: IP20 rated front protection suitable for typical industrial environments.
  • Standard Compliance: Conforms to IEC 60947-5-1 and IEC 60947-4-1 standards.

Technical Specs

Specification Details
Type Auxiliary Contact Block, 1 NC
Mounting Snap-on front mount for 3RT1 contactors
Rated Operational Voltage 690 V AC
Operational Current (AC-15) 6 A at 230 V, 3 A at 400 V
Mechanical Service Life 10,000,000 cycles (typical)
Electrical Endurance 200,000 cycles at AC-15 (230 V)
Protection Class IP20
Connection Type Screw terminals
Dimensions (WxHxD) 10 mm x 38 mm x 51 mm
Ambient Temperature -25 to +60 °C (operation)

Applications / Use Case

The Siemens 3RH1921-1CA01 auxiliary contact block is used to extend control and feedback functionality in motor control systems with SIRIUS contactors, providing reliable status signaling and system safety in industrial automation.

3RH1921-1CA01

$3.61

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    4.0

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    95%

    positive reviews

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Does it come with a warranty?

Yes, All products are offered wth 1-Year warranty.

What is the condition of the product?

All products sold are New & Unused.

How fast is shipping?

All products are delivered within 2-8 business days depending on our stock location.

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