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The Siemens 3RH1921-1EA11 is a lateral auxiliary switch designed for integration with 3RT1 contactors. This component provides one normally open (NO) and one normally closed (NC) contact configuration, utilizing screw terminals for secure connections.
With a front protection class of IP20, the switch operates reliably within an ambient temperature range of -25°C to +60°C. It boasts a typical mechanical service life of 10,000,000 switching cycles and an electrical endurance of 200,000 cycles at AC-15, 230V. The insulation voltage is rated at 500V with a degree of pollution 3, and it has a surge voltage resistance of 6kV.
The switch supports a variety of operational currents across different AC and DC standards, including AC-12, AC-14, AC-15, DC-12, and DC-13, with specific ratings depending on voltage and current path configurations. Its dimensions are 10mm in width, 80mm in height, and 71mm in depth, with a snap-on mounting method for easy installation.
This auxiliary switch is part of the SIRIUS product family and is suitable for use with contactor relays and power contactors. It also features a mirror contact function according to IEC 60947-4-1.
| Qty | Low | High |
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| 1+ | $2.00 | $2.00 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The Siemens 3RH1921-1EA11 auxiliary switch has 1 normally open (NO) and 1 normally closed (NC) contact.
The operating temperature range for the 3RH1921-1EA11 is -25°C to +60°C.
The protection class on the front of the 3RH1921-1EA11 is IP20.
The typical mechanical service life of the 3RH1921-1EA11 is 10,000,000 switching cycles.
The typical electrical endurance of the 3RH1921-1EA11 at AC-15 and 230V is 200,000 switching cycles.
The 3RH1921-1EA11 uses screw-type terminals for the auxiliary and control circuit.
Yes, the 3RH1921-1EA11 has a mirror contact function according to IEC 60947-4-1.