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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RA1120-1GD24-0AP0 |
| Alternative Part Number | 3RA11201GD240AP0 |
| Manufacturer | Siemens |
| Product Type | Non-fused Load Feeder |
| Design | Direct Starter |
| Size | S0 |
| Protection Class IP | IP20 |
| Degree of Pollution | 3 |
| Insulation Voltage | Rated at 690 V |
| Installation Altitude | Maximum 2,000 m above sea level |
| Ambient Temperature (Operating) | -20 … +70 °C |
| Ambient Temperature (Storage) | -55 … +80 °C |
| Shock Resistance | 12.5g |
| Impulse Voltage Resistance | Rated at 6 kV |
| Reference Code | Q (according to DIN EN 61346-2) |
| Mechanical Operating Cycles | Typical 10,000,000 for the contactor |
| Motor Protection Type | Bimetal |
| Adjustable Response Current | 4.5 … 6.3 A |
| Main Circuit Poles | 3 |
| Operating Voltage (AC-3) | Maximum 400 V |
| Operating Current (AC-3 at 400 V) | Rated at 5 A |
| Service Power (AC-3 at 400 V) | Rated at 2.2 kW |
| Off-load Operating Frequency | 15 1/s |
| Control Circuit Voltage Type | AC |
| Control Supply Voltage Frequency | Rated at 50 Hz |
| Control Supply Voltage (at 50 Hz) | Rated at 230 V AC |
| Auxiliary Circuit Extension | Auxiliary switch available |
| Short Circuit Protection | Yes, with circuit-breakers |
| Breaking Capacity Limit | Rated at 50 kA at 400 V |
| Mounting Position | ±90° rotatable, ±22.5° tiltable |
| Mounting Type | For snapping onto 60 mm busbar systems |
| Dimensions (W x H x D) | 45 mm x 183 mm x 148 mm |
| Center Line Spacing | 60 mm |
| Electrical Connection | Screw-type terminals for main current circuit |
| Connectable Conductor Cross-section | Solid: 1 ... 6 mm², Stranded: 1 ... 6 mm², Finely stranded with conductor end processing: 1 ... 6 mm² |
| Verification of Suitability | UL, CSA, CCC, GL, LRS, BV, DNV, PRS |
| Certificates/ Approvals | Yes |
The Siemens 3RA1120-1GD24-0AP0 is a robust and efficient non-fused load feeder designed for direct starting applications. This component is part of the SIRIUS product family, renowned for its reliability and performance in industrial settings. With a size S0 footprint, it is suitable for compact installations and can be easily integrated into existing systems.
This load feeder operates with an adjustable response current of 4.5 to 6.3 A and is rated for use at AC-3 400V, providing a service power of 2.2 kW. It is designed to work with a control supply voltage of AC 230 V at 50 Hz, making it compatible with a wide range of industrial applications.
The device boasts an electromechanical switching contact and bimetal motor protection, ensuring long-term stability and protection for connected motors. The main circuit consists of three poles, and the unit is capable of handling an operating current of 5 A at 400 V.
For ease of installation, the 3RA1120-1GD24-0AP0 is designed to snap onto 60 mm busbar systems and features screw-type terminals for secure and reliable electrical connections. It also includes auxiliary switch product extensions, although it does not have digital inputs or communication protocols such as AS interface, PROFIBUS DP, or PROFINET.
With an insulation voltage rated at 690 V and an impulse voltage resistance of 6 kV, the load feeder is built to withstand challenging industrial environments. It can operate within an ambient temperature range of -20 to +70 °C and is rated for storage temperatures from -55 to +80 °C.
The Siemens 3RA1120-1GD24-0AP0 is designed with safety and durability in mind, featuring a protection class of IP20 and a high breaking capacity limit short-circuit current (lcu) of 50 kA at 400 V. Its mechanical operating cycles are rated for 10,000,000 operations, indicating a long service life for the contactor.
This load feeder is a reliable choice for industrial professionals seeking a high-quality, direct starter solution for motor control applications.
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Frequently Asked Questions
What is the design of the switching contact for this Siemens load feeder?
The switching contact of this Siemens load feeder is electromechanical, providing reliable operation for direct starting applications.
Can you describe the motor protection type used in this load feeder?
The motor protection for this load feeder is of the bimetal type, which offers adjustable response current for current-dependent overload release.
What are the main circuit specifications for this load feeder?
The main circuit of the load feeder has 3 poles for the main current circuit, an operating voltage at AC-3 rated at a maximum of 400V, and an operating current at AC-3 at 400V rated at 5A.
What is the service power rating at AC-3, 400V for this device?
The service power at AC-3, 400V for this device is rated at 2.2 kW, suitable for various industrial motor control applications.
What is the frequency of the control supply voltage for this load feeder?
The control supply voltage frequency for this load feeder is rated at 50 Hz, which is standard for many regions including the UK.
Does this load feeder come with an auxiliary switch?
Yes, this load feeder includes a product extension for an auxiliary switch, although it does not have NC, NO, or changeover contacts for auxiliary contacts.
What is the rated insulation voltage for this Siemens load feeder?
The rated insulation voltage for this Siemens load feeder is 690V, providing a high level of insulation for safety and reliability.
What are the ambient temperature operating limits for this load feeder?
The ambient temperature operating limits for this load feeder range from -20°C to +70°C, ensuring performance in a variety of environmental conditions.
How does this load feeder provide short circuit protection?
Short circuit protection in this load feeder is achieved through the use of circuit-breakers, with a breaking capacity limit short-circuit current (lcu) rated at 50 kA at 400V.
What are the mounting options for this Siemens load feeder?
This Siemens load feeder is designed for snapping onto 60 mm busbar systems, with a mounting position that can be rotated +/-90° on a vertical mounting plane or tilted +/- 22.5° forwards and backwards.
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