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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH1911-1MA11 |
| Alternative Part Number | 3RH19111MA11 |
| Manufacturer | Siemens |
| Category | General Automation |
| Product Type | Auxiliary Switch Block |
| Standard Compliance | DIN EN 50005 |
| Contact Configuration | 1 Normally Open (NO) + 1 Normally Closed (NC) |
| Connection Type | Connection from below with screw connection |
| Suitable For | Contactor relays and contactors for switching motors |
| Contactor Size Compatibility | Sizes S00 |
| Protection Class | IP20 |
| Ambient Temperature Range (Operating) | -25°C to +60°C |
| Ambient Temperature Range (Storage) | -55°C to +80°C |
| Mechanical Operating Cycles | Typically 10,000,000 |
| Electrical Operating Cycles (AC-15) | Typically 200,000 at 230V |
| Contact Reliability | One incorrect switching operation of 100 million switching operations (17 V, 5 mA) |
| Insulation Voltage | Rated at 690V with degree of pollution 3 |
| Impulse Voltage Resistance | Rated at 6kV |
| Operating Current (AC-12) | 10A at 24V, 230V, 400V, and 690V |
| Mounting Type | Snap-on mounting |
| Dimensions (Width x Height x Depth) | 36.5 mm x 37.5 mm x 41.5 mm |
| Electrical Connection | Screw-type terminals |
| Conductor Cross-Section | Solid or finely stranded: 2x (0.5 - 1.5 mm²), 2x (0.75 - 2.5 mm²) |
| AWG Conductor Size | 2x (20 - 16), 2x (18 - 14) |
| Mirror Contact Compliance | Yes, to IEC 60947-4-1 |
| Positively Driven Operation | Yes, to IEC 60947-5-1 |
| Weight | 0.040 kg |
The Siemens 3RH1911-1MA11 is a high-quality auxiliary switch block designed to meet the rigorous standards of DIN EN 50005. This switch block features a single normally open (NO) and a single normally closed (NC) contact, offering reliable and versatile switching capabilities for a range of industrial applications. Its connection is established from below using a screw connection, ensuring a secure and durable fit.
Crafted for use with contactor relays and contactors for motor switching, the 3RH1911-1MA11 is compatible with size S00 devices, making it a compact yet powerful component for your automation needs. The switch block operates within an ambient temperature range of -25°C to +60°C during operation and can withstand storage temperatures from -55°C to +80°C, ensuring resilience in various working environments.
With an impressive mechanical operating cycle of typically 10,000,000 and an electrical operating cycle at AC-15 at 230V of typically 200,000, this auxiliary switch block is built for endurance. It boasts an insulation voltage rated at 690V with a degree of pollution 3 and an impulse voltage resistance rated at 6kV, highlighting its robustness against electrical disturbances.
The 3RH1911-1MA11 is designed for snap-on mounting, which facilitates easy installation and maintenance. Its dimensions are 36.5mm in width, 37.5mm in height, and 41.5mm in depth, making it a compact solution for your control systems. The switch block's screw-type terminals accommodate a range of conductor cross-sections, ensuring compatibility with various wiring setups.
This auxiliary switch block is not only a reliable performer but also adheres to safety standards, featuring mirror contact functionality according to IEC 60947-4-1 and positively driven operation according to IEC 60947-5-1. It is a testament to Siemens' commitment to quality and safety in automation components.
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Frequently Asked Questions
What is the function of this auxiliary switch block?
The auxiliary switch block is designed for use with contactor relays and power contactors, providing an additional 1NO (normally open) and 1NC (normally closed) contact for various control and signalling functions in motor switching applications.
Can this auxiliary switch block be mounted easily?
Yes, it features a snap-on mounting design for quick and easy installation onto compatible devices.
What is the protection class of this auxiliary switch block?
The protection class for the front of the auxiliary switch block is IP20, indicating a basic level of protection against solid objects.
What are the ambient temperature limits for operating this auxiliary switch block?
The auxiliary switch block can operate within an ambient temperature range of -25°C to +60°C and can be stored in temperatures ranging from -55°C to +80°C.
How many mechanical operating cycles can this auxiliary switch block withstand?
It is designed to withstand typically 10,000,000 mechanical operating cycles, indicating a high level of durability for repetitive use.
What is the insulation voltage rating for this auxiliary switch block?
The rated insulation voltage for this auxiliary switch block, with a degree of pollution 3, is 690V.
Does this auxiliary switch block have a mirror contact function?
Yes, it includes a mirror contact function according to IEC 60947-4-1 standards, enhancing its safety features.
What is the impulse voltage resistance of this auxiliary switch block?
The impulse voltage resistance of the auxiliary switch block is rated at 6kV.
What type of electrical connections does this auxiliary switch block support?
It supports screw-type terminals for both auxiliary and control current circuits, accommodating various conductor cross-sections.
Is the auxiliary switch block compliant with positively driven operation standards?
Yes, it complies with positively driven operation to IEC 60947-5-1, ensuring reliable performance in safety circuits.
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