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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH2911-1XA31-0MA0 |
| Alternative Part Number | 3RH29111XA310MA0 |
| Manufacturer | Siemens |
| Type | Auxiliary switch block |
| Configuration | Front-mounted, 3 NO (Normally Open) + 1 NC (Normally Closed) contacts |
| Current Path | 1 NO, 1 NC |
| Suitable For | Contactor relay and power contactor applications |
| Protection Class IP | IP20 on the front |
| Ambient Temperature Range | Operating: -25 … +60°C, Storage: -55 … +80°C |
| Mechanical Operating Cycles | Typically 10,000,000 |
| Electrical Operating Cycles | At AC-15, at 230V: Typically 200,000 |
| Contact Reliability | 1 faulty switching per 100 million operations (17 V, 1 mA) |
| Insulation Voltage | Rated at 690V with degree of pollution 3 |
| Impulse Voltage Resistance | Rated at 6kV |
| Terminal Type | Screw terminal |
| Standards | DIN EN 50011 |
| Commodity Code | 853650 |
The Siemens 3RH2911-1XA31-0MA0 is a meticulously engineered auxiliary switch block designed to offer reliable and efficient performance in a variety of industrial applications. This switch block features a front-mounted design with three normally open (NO) and one normally closed (NC) contact configurations, providing versatility for integration into numerous control systems.
Crafted for compatibility with both contactor relays and power contactors, this auxiliary switch block is part of the esteemed SIRIUS product line, known for its robustness and quality. The switch block is equipped with screw terminals for secure and straightforward wiring, adhering to the DIN EN 50011 standard.
With an IP20 protection class rating on the front, the switch block ensures a degree of protection against solid objects, making it suitable for use in environments where equipment needs to be guarded against touch by fingers or objects. It is designed to withstand a wide range of ambient temperatures, from as low as -55°C during storage to up to +60°C during operation, ensuring consistent performance even in demanding conditions.
The Siemens 3RH2911-1XA31-0MA0 boasts an impressive mechanical operating life of typically 10 million cycles and an electrical operating life of 200,000 cycles at AC-15 at 230V, highlighting its durability and long-term reliability. The contact reliability is exceptional, with only one faulty switching operation expected out of 100 million, ensuring that your operations run smoothly with minimal downtime.
This auxiliary switch block is also characterised by its compact dimensions, allowing for efficient use of space within control cabinets. The snap-on mounting design facilitates easy installation and maintenance, making it a convenient choice for system integrators and maintenance personnel.
Overall, the Siemens 3RH2911-1XA31-0MA0 auxiliary switch block is a high-quality component that offers reliability, durability, and ease of use, making it an excellent choice for enhancing the functionality and efficiency of your industrial control systems.
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Frequently Asked Questions
What type of auxiliary switch is this?
This is an auxiliary switch block designed to be mounted on the front of a contactor or relay. It features 3 normally open (NO) and 1 normally closed (NC) contacts.
Can this auxiliary switch be used with any contactor or relay?
It is specifically designed for compatibility with Siemens SIRIUS contactor relays and power contactors, particularly the SZ S00 and S0 series.
What is the protection class of this auxiliary switch?
The auxiliary switch has a protection class of IP20 on the front, indicating a basic level of protection against solid objects.
What are the operating and storage temperature ranges for this auxiliary switch?
The operating temperature range is from -25°C to +60°C, and the storage temperature range is from -55°C to +80°C.
How many mechanical operating cycles can this auxiliary switch withstand?
The auxiliary switch is designed for a mechanical operating life of typically 10 million cycles.
What is the electrical endurance of this auxiliary switch at AC-15, 230V?
At AC-15, 230V, the electrical endurance is typically 200,000 cycles.
What is the contact reliability of the auxiliary contacts?
The auxiliary contacts have a contact reliability of 1 faulty switching per 100 million operations at 17V, 1mA.
What is the insulation voltage rating for this auxiliary switch?
The insulation voltage rating with a degree of pollution 3 is 690V.
What is the impulse voltage resistance of this auxiliary switch?
The impulse voltage resistance is rated at 6kV.
What are the screw terminal designations for this auxiliary switch?
The screw terminal designations for this auxiliary switch are 53/54, 61/62, 73/74, and 83/84, conforming to DIN EN 50011 standards.
Part conditions explained
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