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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH1911-1FB11 |
| Alternative Part Number | 3RH19111FB11 |
| Manufacturer | Siemens |
| Product Type | Auxiliary Switch Block |
| Suitable Applications | Contactor relay and power contactor for switching motors |
| Size | S00 |
| Number of Contacts | 1 Normally Open (NO) + 1 Normally Closed (NC) |
| Connection Type | Screw Connection |
| Mounting Type | Snap-on mounting |
| Operating Voltage for AC-12 | 24 V, 230 V, 400 V, 690 V - 10 A |
| Operating Voltage for AC-15 | 24 V, 230 V, 400 V - 6 A; 690 V - 1 A |
| Operating Voltage for DC-13 | 24 V - 6 A; 60 V - 2 A; 110 V - 1 A; 220 V - 0.3 A |
| Insulation Voltage | Rated value 690 V with degree of pollution 3 |
| Impulse Voltage Resistance | Rated value 6 kV |
| Ambient Operating Temperature | -25 to +60 °C |
| Storage Temperature | -55 to +80 °C |
| Mechanical Operating Cycles | Typical 10,000,000 |
| Electrical Operating Cycles | At AC-15, at 230 V typical 200,000 |
| Contact Reliability | 1 faulty switching per 100 million (17 V, 1 mA) |
| Protection Class | IP20 |
| Dimensions (W x H x D) | 36.5 mm x 37.5 mm x 41.5 mm |
| Connection Cross-Section | For auxiliary contacts: 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²); For AWG: 2x (20 ... 16), 2x (18 ... 14) |
The Siemens 3RH1911-1FB11 is a meticulously engineered auxiliary switch block designed to complement contactor relays and power contactors, particularly for motor switching applications. This component, belonging to the SIRIUS product family, is renowned for its reliability and durability in industrial settings. It features a configuration of one normally open (NO) and one normally closed (NC) contact, making it versatile for various control and signalling circuits.
Crafted with a focus on user-friendly installation, the 3RH1911-1FB11 boasts a snap-on mounting design, allowing for quick and secure attachment to compatible devices. The switch block operates within an ambient temperature range of -25 to +60 degrees Celsius, ensuring consistent performance even in demanding environments.
With an IP20 protection class rating on the front, the unit is safeguarded against solid objects larger than 12.5mm, although it should be housed within a suitable enclosure for optimal protection. The electrical durability of the switch block is impressive, with typical operating cycles at AC-15, 230V rated at 200,000, and a mechanical operating life of approximately 10 million cycles, highlighting its capacity for long-term use.
The 3RH1911-1FB11 is equipped with screw-type terminals for secure and reliable electrical connections, accommodating a range of conductor cross-sections for auxiliary contacts. It also meets stringent standards for contact reliability, with a very low chance of incorrect switching operations, ensuring the integrity of the control system it is part of.
Overall, the Siemens 3RH1911-1FB11 auxiliary switch block is a testament to Siemens' commitment to quality, reliability, and innovation in automation and control components. It is an essential part of a robust and efficient electrical system, providing the dependability required for industrial applications.
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Frequently Asked Questions
What type of device is this auxiliary switch block suitable for?
This auxiliary switch block is suitable for use with contactor relays and power contactors for switching motors, specifically of size S00.
What is the protection class for the front of this auxiliary switch block?
The protection class for the front of this auxiliary switch block is IP20.
Can you specify the ambient temperature range for operating this auxiliary switch block?
The ambient temperature range for operating this auxiliary switch block is between -25°C and +60°C.
What is the mechanical service life of this auxiliary switch block?
The mechanical service life of this auxiliary switch block is typically around 10 million operating cycles.
How many electrical operating cycles can this auxiliary switch block withstand?
This auxiliary switch block can typically withstand 200,000 electrical operating cycles at AC-15 at 230V.
What is the insulation voltage rating for this auxiliary switch block?
The insulation voltage rating for this auxiliary switch block, with a degree of pollution 3, is 690V.
What is the impulse voltage resistance of this auxiliary switch block?
The impulse voltage resistance of this auxiliary switch block is rated at 6kV.
How many normally closed (NC) and normally open (NO) contacts does this auxiliary switch block have?
This auxiliary switch block has 1 normally closed (NC) lagging contact and 1 normally open (NO) leading contact.
What are the operating current ratings for the auxiliary contacts of this switch block?
The operating current ratings for the auxiliary contacts of this switch block are 10A at 24V and 230V for AC-12, and vary for other voltages and DC applications as specified in the datasheet.
What type of mounting does this auxiliary switch block support?
This auxiliary switch block supports snap-on mounting for easy installation.
What are the dimensions of this auxiliary switch block?
The dimensions of this auxiliary switch block are 36.5mm in width, 37.5mm in height, and 41.5mm in depth.
What type of electrical connection does this auxiliary switch block use?
This auxiliary switch block uses screw-type terminals for its electrical connections.
What is the product function related to safety for this auxiliary switch block?
This auxiliary switch block has a product function of positively driven operation to IEC 60947-5-1, ensuring reliable performance in safety circuits.
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