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Siemens SIRIUS 3RH2911-1HA3

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3RH2911-1HA3

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The Siemens 3RH2911-1HA3 is a front-mounted auxiliary switch designed for instantaneous operation. This component features a contact configuration comprising three normally open (NO) contacts and one normally closed (NC) contact, allowing for versatile functionality in control applications.

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Technical specifications for 3RH2911-1HA3

ManufacturerSiemens
Product TypeFront auxiliary switch (instantaneous)
Product LineSIRIUS
Part Number3RH2911-1HA3
Contact Configuration3 Normally Open (NO) + 1 Normally Closed (NC)
MountingSnap-on mounting on front of main contactor
Terminal TypeScrew terminal
Protection ClassIP20 (on the front)
Insulation Voltage690 volts (pollution degree 3)
Rated Surge Voltage6 kV (kilovolts)
Mechanical Life10 million cycles
Electrical Life200,000 cycles
ComplianceRoHS-compliant
Operating Temperature0 to 40 degrees Celsius
Storage Temperature0 to 50 degrees Celsius
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The 3RH2911-1HA3 from Siemens belongs to the SIRIUS series and serves as an instantaneous front auxiliary switch. It is equipped with a contact arrangement of three normally open (NO) and one normally closed (NC) terminal, enabling a range of control applications. The component is designed for snap-on installation directly onto the front of a main contactor, which simplifies integration.

This switch is defined by its screw terminal type, offering reliable and secure connections. In terms of electrical specifications, it maintains an insulation voltage rating of 690 volts, suitable for pollution degree 3 environments. It can withstand surge voltages of up to 6 kV, providing solid performance in various settings.

The mechanical lifespan is rated for an impressive 10 million cycles, while the electrical life stands at 200,000 cycles, ensuring longevity and durability. The protection class is rated at IP20 for the front, providing a moderate level of ingress protection. Operating temperatures are acceptable from 0 to 40 degrees Celsius, while storage conditions can reach up to 50 degrees Celsius. Additionally, the switch is compliant with RoHS standards, affirming its adherence to environmental regulations.