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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RT1056-6NP38-0PA5 |
| Manufacturer | Siemens |
| Product Type | Power Contactor |
| Poles | 3 Poles |
| Contact Configuration | 2NO/2NC (2 Normally Open, 2 Normally Closed) |
| Rated Operational Current | 185 A |
| Rated Control Supply Voltage (AC) | 200 to 277 V |
| Rated Control Supply Voltage (DC) | 200 to 277 V |
| Rated Operational Power at 400 V | 90 kW |
| Insulation Voltage | 1000 V ac |
| Surge Voltage Resistance | 8 kV |
| Mechanical Service Life | 10,000,000 cycles typical |
| Ambient Operating Temperature Range | -25 to +60 °C |
| Installation Altitude | Up to 2000 m above sea level |
| Mounting Type | Screw fixing |
| Dimensions (H x W x D) | 172 mm x 120 mm x 170 mm |
| Auxiliary Contacts | 2 NC and 2 NO instantaneous contacts |
| Operating Frequency at AC-3 | Maximum 750 1/h |
| Control Circuit Type | AC/DC |
| Design of the Surge Suppressor | With varistor |
| Connection Type | Screw-type terminals for main and auxiliary circuits |
| Approvals | General Product Approval, Functional Safety/Safety of Machinery, Declaration of Conformity |
The Siemens 3RT1056-6NP38-0PA5 is a robust power contactor designed to handle high current applications with ease. This contactor is engineered for AC-3 operations and is capable of switching motors with power ratings up to 90 kW at 400 V. It features a three-pole design with additional 2NO/2NC auxiliary contacts, providing flexibility for various control and power circuit configurations.
With an insulation voltage rated at 1000 V ac and operational voltage capabilities ranging from 200 to 277 V dc, this contactor is suitable for a wide array of industrial applications. The solid-state composition and bar connections ensure durability and reliable connections, while the electronic operating mechanism is optimised for direct PLC interface with a 24V DC control voltage.
The contactor is designed to withstand challenging environmental conditions, with an operational temperature range of -25 to +60 °C and storage temperatures ranging from -55 to +80 °C. It also boasts a mechanical service life of up to 10 million switching cycles, highlighting its longevity and reliability in demanding industrial settings.
Installation is made straightforward with its screw fixing mounting type, and the compact dimensions (height: 172 mm, width: 120 mm, depth: 170 mm) allow for efficient use of space inside control cabinets. The contactor also supports side-by-side mounting, enabling neat and organised panel layouts.
Overall, the Siemens 3RT1056-6NP38-0PA5 power contactor is a high-performance component that offers reliable operation, extensive service life, and compatibility with a wide range of industrial control systems.
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Frequently Asked Questions
What are the main technical specifications of this power contactor?
This Siemens power contactor is a size S6, with an insulation voltage rated at 1000 V and a surge voltage resistance rated at 8 kV. It has an IP00 protection class for both the front and terminal, and a mechanical service life of 10 million switching cycles. The contactor is designed for AC/DC operation with a control supply voltage of 200 to 277 V.
Can this contactor be used in high-altitude installations?
Yes, the contactor can be installed at altitudes up to 2000 metres above sea level without derating.
What is the maximum operating temperature for this contactor?
The contactor is designed to operate within an ambient temperature range of -25 to +60 degrees Celsius.
What is the rated operating current for this contactor?
The rated operating current for the contactor at AC-3 is 185 A at 400 V.
What are the dimensions of this contactor for installation purposes?
The dimensions for the contactor are 172 mm in height, 120 mm in width, and 170 mm in depth. A spacing of 10 mm is required for grounded parts at the side.
What type of connections does this contactor support?
The contactor supports screw-type terminals for both the main current circuit and the auxiliary and control current circuit.
How many auxiliary contacts does this contactor have?
The contactor is equipped with 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts.
What is the short-circuit protection design for this contactor?
For short-circuit protection of the main circuit, a fuse gL/gG of 355 A is required for type of assignment 1, and 315 A for type of assignment 2. For the auxiliary switch, a fuse gL/gG of 10 A is required.
What is the thermal short-time current limit for this contactor?
The thermal short-time current limit for the contactor is 1480 A for a duration of 10 seconds.
What are the control circuit specifications for this contactor?
The control circuit is designed for AC/DC operation with a control supply voltage rated at 200 to 277 V, both at 50 Hz and 60 Hz. The operating range factor for the control supply voltage is 0.8 to 1.1.
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