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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH2911-2GA22 |
| Alternative Part Number | 3RH29112GA22 |
| Manufacturer | Siemens |
| Product Type | Auxiliary Switch |
| Mounting Type | Snap On Mount |
| Current Rating | 10 A |
| Dimensions | 36 x 52.6 x 41.5 mm |
| Number of Contacts | 2 Normally Open (NO), 2 Normally Closed (NC) |
| Suitable For Use With | Contactor relays Size S00 |
| Terminal Type | Spring-type terminal 53/54, 63/64, 73/74, 83/84 |
| Mechanical Service Life | Typical 10,000,000 switching cycles |
| Electrical Endurance | Typical 200,000 switching cycles at AC-15, 230 V |
| Contact Reliability | 1 faulty switching per 100 million (17 V, 1 mA) |
| Insulation Voltage | Rated value 690 V with degree of pollution 3 |
| Surge Voltage Resistance | Rated value 6 kV |
| Ambient Operating Temperature Range | -25 to +60 °C during operation, -55 to +80 °C during storage |
| Protection Class | IP20 on the front |
| Compliance | Physically coded; can be combined with contactor relays 3RH2140* and 3RH2440* (EN 50011) |
| Positively Driven Operation | Yes, according to IEC 60947-5-1 with 3RH2 |
The Siemens 3RH2911-2GA22 is a meticulously engineered auxiliary switch designed to enhance the functionality of contactor relays. This switch is part of the esteemed SIRIUS product line, renowned for its reliability and versatility in various industrial applications. With a configuration of 2 normally open (NO) and 2 normally closed (NC) contacts, it offers flexibility for a range of control tasks.
Crafted for front-side mounting, the switch boasts a compact form factor with dimensions of 36 x 52.6 x 41.5 mm, ensuring it can be integrated into systems without demanding excessive space. The spring-type terminals facilitate a secure and straightforward connection process, accommodating conductor cross-sections finely stranded with core end processing of 2x (0.5 ... 1.5 mm²) and without core end processing of 2x (0.5 ... 2.5 mm²).
The auxiliary switch is specifically designed to be compatible with contactor relays of sizes S00, and it can be combined with Siemens contactor relays 3RH2140* and 3RH2440*, adhering to the EN 50011 standard. This ensures a seamless integration with existing Siemens relay setups, providing a reliable expansion of control capabilities.
In terms of durability, the 3RH2911-2GA22 is built to last, with a mechanical service life of typically 10 million switching cycles and an electrical endurance at AC-15 at 230 V of typically 200,000 cycles. It operates within an ambient temperature range of -25 to +60 °C during operation and can withstand storage temperatures from -55 to +80 °C, making it suitable for challenging environments.
The switch is rated for an insulation voltage of 690 V with a degree of pollution 3 and has a surge voltage resistance rated value of 6 kV, ensuring it can handle the rigours of industrial electrical systems. The IP20 protection class on the front provides a basic level of protection against solid objects, making it suitable for use in controlled environments.
Overall, the Siemens 3RH2911-2GA22 auxiliary switch is a robust and reliable component that offers precise control for industrial applications, ensuring efficient and safe operation of contactor relay systems.
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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 for switching auxiliary circuits. It provides additional contacts for control and signalling purposes within electrical circuits.
Can this auxiliary switch be mounted directly onto a contactor relay?
Yes, it is designed for snap-on mounting directly onto the front of compatible contactor relays, specifically the 3RH2140* and 3RH2440* series according to EN 50011.
What are the contact configurations available in this auxiliary switch?
This auxiliary switch comes with 2 normally open (NO) and 2 normally closed (NC) contacts, providing flexibility for various circuit configurations.
What is the rated operational current for the auxiliary contacts?
The rated operational current for the auxiliary contacts at AC-12 is 10 A for both 24 V and 230 V.
What is the mechanical service life of this auxiliary switch?
The mechanical service life of the auxiliary switch is typically 10 million switching cycles, indicating its durability and longevity.
What type of terminals does this auxiliary switch have?
The auxiliary switch is equipped with spring-type terminals, which allow for secure and maintenance-free connections.
What is the insulation voltage rating for this auxiliary switch?
The insulation voltage rating for this auxiliary switch, with a degree of pollution 3, is 690 V.
What is the surge voltage resistance of this auxiliary switch?
The surge voltage resistance of this auxiliary switch is rated at 6 kV.
What are the dimensions of this auxiliary switch?
The dimensions of the auxiliary switch are 36 mm in width, 52.6 mm in height, and 41.5 mm in depth.
Is this auxiliary switch suitable for use in different environmental conditions?
Yes, it can operate within a wide range of ambient temperatures, from -25 °C up to +60 °C, and can be stored in temperatures ranging from -55 °C to +80 °C.
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