3RH1921-2CA01

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Overview of Siemens 3RH1921-2CA01

Buy genuine Siemens 3RH1921-2CA01 online today for your automation system. This front-side auxiliary switch is a trusted solution for industrial control and contactor applications. Designed for use with Siemens 3RT1 contactors, the 3RH1921-2CA01 delivers reliable switching performance and long service life. Featuring a 1 NC (normally closed) contact and a spring-type terminal, this auxiliary switch is ideal for monitoring and controlling motor circuits, safety interlocks, and status indication in automation panels. With a mechanical service life of up to 10 million switching cycles and robust electrical endurance, the Siemens 3RH1921-2CA01 is engineered for demanding environments. Whether you need to buy 3RH1921-2CA01 for a new installation or replacement, this model is a factory-grade choice for industrial automation and control systems.

Key Features of Siemens 3RH1921-2CA01

  • 1-pole, 1 NC (normally closed) contact for reliable switching
  • Spring-type terminal for secure and fast wiring
  • Compatible with Siemens 3RT1 contactors
  • High mechanical service life: up to 10 million cycles
  • Electrical endurance: 200,000 cycles at AC-15, 230 V
  • Front-side mounting for easy installation and access
  • IP20 protection class for safe operation in control panels
  • Wide operating temperature range: -25°C to +60°C
  • Complies with DIN EN50005 standards

Technical Specs of 3RH1921-2CA01

Explore 3RH1921-2CA01 specifications for detailed parameters before installation.

Parameter Value
Contacts 1 NC
Rated Current 10 A at 24/230 VAC, 10 A at 24 VDC
Electrical Endurance 200,000 cycles (AC-15, 230 V)
Mechanical Service Life 10,000,000 cycles
Insulation Voltage 690 V
Surge Voltage Resistance 6 kV
Operating Temperature -25°C to +60°C
Protection Class IP20

Applications / Use Case

This Siemens 3RH1921-2CA01 is commonly used in industrial automation worldwide. It is ideal for monitoring contactor status, providing feedback signals, and enabling safety interlocks in control panels. The switch is widely applied in machine automation, production line systems, and factory control panels where reliable auxiliary contact switching is required. Its robust design and compatibility with Siemens 3RT1 contactors make it a preferred choice for engineers and maintenance teams in packaging and conveyor operations, motion control setups, and process control environments.

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3RH1921-2CA01

$4.75

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Does it come with a warranty?

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

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All products sold are New & Unused.

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