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The Siemens 3RH1921-1CA10 is an attachable auxiliary contact block designed for use with Siemens 3RT10 contactors (sizes S0 to S12). It provides a reliable 1 Normally Open (NO) contact for control circuit applications, offering enhanced functionality for your electrical systems. A key benefit is its simple snap-on mounting, which speeds up installation. However, it is specifically designed for the 3RT10 series and may not be compatible with other contactor types.
| Series | 3RH1 |
|---|---|
| Model Part Number | 3RH1921-1CA10 |
| Brand | Siemens |
An auxiliary contact block provides additional electrical contacts that operate in conjunction with the main power contacts of a contactor. They are used for control, signaling, and interlocking purposes in electrical circuits.
The Siemens 3RH1921-1CA10 model provides one normally open (NO) contact.
It is rated for a maximum operating current of 6A under AC-15 conditions.
No, this block is specifically designed for Siemens 3RT10 contactors in sizes S0 to S12.
It features a snap-on mounting mechanism for easy and quick attachment to the front of compatible contactors.
The operating temperature range is from -55°C to +80°C.
No, this specific model, 3RH1921-1CA10, only provides one normally open (NO) contact. Other variants may be available for NC functionality.
Verify that the contact block is correctly snapped onto the compatible 3RT10 contactor. Ensure wiring connections to the NO terminal are secure and that the correct NO terminal is being used for your circuit.
Ensure wires are properly stripped and inserted fully into the terminal. Tighten the screw firmly but do not overtighten to avoid damaging the terminal.
Confirm that you are using a compatible Siemens 3RT10 contactor (sizes S0-S12) and that the contactor's mounting surface is clean and free of obstruction. Ensure correct alignment during attachment.
Setup:
The 3RH1921-1CA10 is designed for straightforward snap-on mounting directly onto compatible Siemens 3RT10 contactors (sizes S0 to S12). Align the auxiliary contact block with the front of the contactor and press firmly until it clicks into place. Connect your control wiring to the screw terminals provided, ensuring proper stripping of wires and secure tightening of the screws.
Compatibility:
This auxiliary contact block is specifically designed for Siemens 3RT10 contactors in sizes S0 through S12. It is not designed for use with other contactor series or brands without verification of mechanical and electrical compatibility.
Care:
