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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH1911-1FA40 |
| Alternative Part Number | 3RH19111FA40 |
| Manufacturer | Siemens |
| Product Type | Auxiliary Switch Block |
| Rated Insulation Voltage | 690 V ac |
| Rated Operational Voltage | 600 V dc |
| Number of Contacts | 4 Normally Open (NO) |
| Contact Configuration | DIN EN50005 standard |
| Electrical Durability | 200,000 switching cycles at AC-15, 230 V typical |
| Mechanical Service Life | 10 million switching cycles typical |
| Operating Current | 10 A at 24 V and 230 V in AC-12 |
| Mounting Type | Snap-on mounting |
| Width | 36.5 mm |
| Height | 37.5 mm |
| Depth | 41.5 mm |
| Connection Type | Screw-type terminals |
| Compatible Conductor Cross-Section | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) for finely stranded wires with core end processing |
| Ambient Operating Temperature | -25 °C to +60 °C during operation |
| Storage Temperature | -55 °C to +80 °C |
| Protection Class | IP20 on the front |
| Compliance | Mirror contact and positively driven operation according to IEC standards |
The Siemens 3RH1911-1FA40 is a high-quality auxiliary switch block designed for seamless integration with contactor relays and power contactors. This component is essential for users looking to expand the functionality of their control systems with additional switching capabilities. With a configuration of 4 normally open (NO) contacts, it adheres to the DIN EN50005 standard, ensuring compatibility and reliability in a variety of industrial applications.
Crafted for durability, the 3RH1911-1FA40 boasts an impressive mechanical service life of 10 million switching cycles, and an electrical endurance of 200,000 cycles at AC-15 at 230V, which speaks to its robustness and longevity in demanding operational conditions. The switch block operates efficiently within an ambient temperature range of -25 to +60°C, making it suitable for a wide range of environments.
Safety is a priority with this component, as it features an insulation voltage rated at 690V and a surge voltage resistance of 6kV, providing peace of mind in the protection of your electrical systems. The switch block's compact design, with snap-on mounting, allows for easy installation and maintenance, ensuring minimal downtime and enhanced productivity.
The 3RH1911-1FA40 is a testament to Siemens' commitment to quality and innovation, offering a reliable solution for those seeking to enhance their control systems with a switch block that promises consistent performance and safety.
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Frequently Asked Questions
What is the voltage rating for this auxiliary switch block?
The auxiliary switch block is rated for 690 V ac and 600 V dc.
Can this auxiliary switch block be used with motor contactors?
Yes, it is suitable for use with contactor relays and motor contactors for switching motors.
What is the protection class of this auxiliary switch block?
The protection class for the front of the auxiliary switch block is IP20.
What are the ambient temperature limits for operating this auxiliary switch block?
The ambient temperature range for operation is from -25°C to +60°C, and for storage, it's from -55°C to +80°C.
How many normally open (NO) contacts does this auxiliary switch block have?
This auxiliary switch block has 4 normally open (NO) contacts.
What is the mechanical service life of this auxiliary switch block?
The mechanical service life is typically 10 million switching cycles.
What is the electrical endurance of this auxiliary switch block at AC-15, 230 V?
The electrical endurance at AC-15, 230 V is typically 200,000 switching cycles.
What type of connection does this auxiliary switch block support?
It supports screw-type terminal connections.
What are the dimensions of this auxiliary switch block?
The dimensions are 36.5 mm in width, 37.5 mm in height, and 41.5 mm in depth.
Does this auxiliary switch block have mirror contact functionality?
Yes, it has mirror contact functionality according to IEC 60947-4-1 when used with 3RT1 contactors.
Is the auxiliary switch block positively driven according to IEC 60947-5-1?
Yes, it is positively driven according to IEC 60947-5-1 when used with 3RH1 contactor relays.
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