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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH2911-1HA12 |
| Alternative Part Number | 3RH29111HA12 |
| Manufacturer | Siemens |
| Series | 3RH |
| Type | Auxiliary Switch |
| Mounting | Snap On Mount |
| Current Rating | 10 A |
| Dimensions | 36 x 48.1 x 37.5 mm |
| Electrical Connection | Screw-type terminals |
| Number of Contacts | 1 Normally Open (NO) + 2 Normally Closed (NC) |
| Suitable For | Contactor relay and power contactor |
| Protection Class | IP20 on the front |
| Ambient Operating Temperature | -25 ... +60 °C during operation |
| Mechanical Service Life | 10,000,000 switching cycles typical |
| Electrical Endurance | 200,000 switching cycles at AC-15, 230 V typical |
| Insulation Voltage | Rated value 690 V with degree of pollution 3 |
| Surge Voltage Resistance | Rated value 6 kV |
| Compliance | Mirror contact acc. to IEC 60947-4-1, positively driven operation acc. to IEC 60947-5-1 |
The Siemens 3RH2911-1HA12 is a meticulously engineered auxiliary switch designed to complement contactor relays and power contactors within industrial control systems. This switch is part of the esteemed SIRIUS product family, renowned for its reliability and versatility in various applications.
Crafted for snap-on mounting, the 3RH2911-1HA12 boasts a compact form factor with dimensions of 36 x 48.1 x 37.5 mm, ensuring it integrates seamlessly into existing setups without demanding additional space. The switch features a robust construction that can withstand the rigours of industrial environments, with an IP20 protection class on the front, safeguarding against solid objects larger than 12.5 mm.
This auxiliary switch is equipped with one normally open (NO) and two normally closed (NC) contacts, providing flexibility in circuit design and control logic. It is capable of handling a mechanical service life of typically 10 million switching cycles and an electrical endurance of 200,000 cycles at AC-15 at 230 V, highlighting its durability and long-term performance.
The 3RH2911-1HA12 operates reliably within a broad ambient temperature range, from -25 to +60 °C during operation and -55 to +80 °C during storage, ensuring consistent performance even in extreme conditions. Its insulation voltage is rated at 690 V with a degree of pollution 3, and it has a surge voltage resistance rated value of 6 kV, providing excellent electrical resilience.
This auxiliary switch is an essential component for those seeking a high-quality, reliable solution for enhancing the control and safety of their electrical systems. Its design and specifications ensure it meets the rigorous demands of industrial applications, making it a valuable addition to any control system configuration.
Commonly Asked Questions
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Frequently Asked Questions
What is the function of this auxiliary switch?
The auxiliary switch is designed to be used with contactor relays and power contactors, providing additional switching capabilities. It can be used to indicate the status of the main contactor or for interlocking purposes in control circuits.
Can this auxiliary switch be mounted directly onto a contactor?
Yes, it is designed for snap-on mounting directly onto compatible Siemens 3RH and 3RT contactor relays and power contactors.
What are the contact configurations available in this auxiliary switch?
This auxiliary switch comes with 1 Normally Open (NO) and 2 Normally Closed (NC) contacts, providing flexibility for various control circuit configurations.
What is the rated insulation voltage for this auxiliary switch?
The rated insulation voltage for this auxiliary switch is 690 V, with a degree of pollution 3, ensuring it can safely isolate the control circuit from higher voltages.
What is the mechanical service life of this auxiliary switch?
The mechanical service life of this auxiliary switch is typically 10 million switching cycles, indicating its durability and reliability over time.
What is the electrical endurance of this auxiliary switch at AC-15, 230 V?
At AC-15, 230 V, the electrical endurance of this auxiliary switch is typically 200,000 switching cycles.
What is the protection class of the front face of this auxiliary switch?
The front face of this auxiliary switch has a protection class of IP20, which protects against solid objects larger than 12.5 mm but not against liquids.
What are the ambient temperature ranges for storage and operation of this auxiliary switch?
The ambient temperature range for storage is -55 to +80 °C, and for operation, it is -25 to +60 °C, accommodating a wide range of environmental conditions.
What are the dimensions of this auxiliary switch?
The dimensions of this auxiliary switch are 36 mm in width, 37.5 mm in height, and 43.7 mm in depth, making it compact and suitable for various installations.
Does this auxiliary switch have any specific certifications or approvals?
Yes, this auxiliary switch complies with relevant international standards and holds certifications that confirm its suitability for industrial use.
Part conditions explained
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