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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RH1921-1JA11 |
| Manufacturer | Siemens |
| Series | SIRIUS |
| Type | Auxiliary Switch Block |
| Mounting Type | Snap-On Mount |
| Contact Configuration | 1 Normally Open (NO), 1 Normally Closed (NC) |
| Terminal Type | Screw Terminal |
| Rated Operational Voltage | 230 V AC |
| Rated Operational Current | 10 A |
| Protection Class (Front) | IP20 |
| Ambient Temperature (Operation) | -25°C to +60°C |
| Ambient Temperature (Storage) | -55°C to +80°C |
| Mechanical Service Life | 10,000,000 switching cycles |
| Electrical Endurance (AC-15, 230 V) | 200,000 switching cycles |
| Insulation Voltage | 500 V |
| Surge Voltage Resistance | 6 kV |
| Dimensions (W x H x D) | 10 mm x 80 mm x 71 mm |
| Suitable For | Contactor relay and power contactor |
| Contact Reliability | 1 faulty switching per 100 million operations (17 V, 1 mA) |
| Product Function | Mirror contact according to IEC 60947-4-1 (with 3RT1) |
| Conductor Cross-Sections (Auxiliary) | Finely stranded: 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²); AWG: 2x (20 ... 16), 2x (18 ... 14) |
| Application | Designed for use with Siemens 3RT1 contactors, this auxiliary switch block provides reliable auxiliary contact functions for various industrial applications. The snap-on mounting and screw terminals ensure easy installation and secure connections. The unit is built to withstand demanding environments with a high mechanical service life and robust electrical endurance. Ideal for enhancing the functionality of contactor relays and power contactors in automation systems. |
The Siemens 3RH1921-1JA11 is a high-quality auxiliary switch block designed for use with contactors in the SIRIUS series. This versatile component features one normally open (NO) and one normally closed (NC) contact, making it suitable for a variety of industrial applications. With a robust snap-on mounting system, it ensures easy and secure installation.
Engineered to meet the demanding requirements of modern electrical systems, the 3RH1921-1JA11 offers reliable performance with a mechanical service life of up to 10 million switching cycles. It operates efficiently within a wide ambient temperature range of -25°C to +60°C, ensuring durability in diverse environmental conditions.
The auxiliary switch block is rated for a maximum operational current of 10A at both 24V and 230V AC, and it provides excellent contact reliability with a fault rate of just one incorrect switching operation per 100 million operations. The unit is protected to IP20 standards, ensuring safe and reliable operation in industrial settings.
Measuring 10mm in width, 80mm in height, and 71mm in depth, the Siemens 3RH1921-1JA11 is compact yet powerful, making it an ideal choice for enhancing the functionality of your contactor systems.
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Frequently Asked Questions
What is the primary function of this auxiliary switch block?
The primary function of this auxiliary switch block is to provide additional switching capabilities for contactors, specifically for the Siemens 3RT1 series.
What type of contacts does this auxiliary switch block have?
This auxiliary switch block features one normally open (NO) and one normally closed (NC) contact.
What is the rated operational current for the auxiliary contacts at 230 V AC?
The rated operational current for the auxiliary contacts at 230 V AC is 10 A.
What is the protection class of this auxiliary switch block?
The protection class of this auxiliary switch block is IP20.
What are the dimensions of this auxiliary switch block?
The dimensions of this auxiliary switch block are 10 mm in width, 80 mm in height, and 71 mm in depth.
What is the mechanical service life of this auxiliary switch block?
The mechanical service life of this auxiliary switch block is approximately 10 million switching cycles.
What is the electrical endurance of this auxiliary switch block at AC-15 at 230 V?
The electrical endurance of this auxiliary switch block at AC-15 at 230 V is approximately 200,000 switching cycles.
What type of mounting does this auxiliary switch block use?
This auxiliary switch block uses snap-on mounting.
What is the rated insulation voltage for this auxiliary switch block?
The rated insulation voltage for this auxiliary switch block is 500 V with a degree of pollution 3.
What is the surge voltage resistance of this auxiliary switch block?
The surge voltage resistance of this auxiliary switch block is rated at 6 kV.
What is the ambient operating temperature range for this auxiliary switch block?
The ambient operating temperature range for this auxiliary switch block is from -25°C to +60°C.
What type of terminals does this auxiliary switch block use?
This auxiliary switch block uses screw-type terminals for electrical connections.
