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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3TC4817-0LB4 |
| Alternative Part Number | 3TC48170LB4 |
| Manufacturer | Siemens |
| Contactor Size | 4 |
| Number of Poles | 2-pole |
| Operating Voltage | DC-3 and 5, 75 A at 750 V |
| Auxiliary Contacts | 21 (2NO + 1NC) |
| Control Supply Voltage | 24V DC |
| Operating Range | 0.7 to 1.25 x US |
| Insulation Voltage Rated Value | 800 V |
| Maximum Permissible Voltage | 300 V for safe isolation between coil and main contacts according to EN 60947-1 |
| Shock Resistance | At DC 10g / 5 ms, 5g / 10 ms |
| Mechanical Service Life | Typical 10,000,000 operating cycles |
| Ambient Operating Temperature | -40 ... +70 °C during operation |
| Ambient Storage Temperature | -50 ... +80 °C during storage |
| Type of Voltage | DC |
| Operating Current at DC-1 | 75 A at 24 V, 110 V, 220 V, 440 V, 600 V |
| Operating Power at DC-1 | 8.2 kW at 110 V, 16.5 kW at 220 V, 33 kW at 440 V, 56 kW at 750 V |
| Operating Frequency at DC-1 | Maximum 1,000 1/h |
| Operating Current at DC-3 and DC-5 | 75 A at 220 V, 440 V, 600 V, 750 V |
| Operating Power at DC-3 and DC-5 | 6.5 kW at 110 V, 13 kW at 220 V, 27 kW at 440 V, 38 kW at 600 V, 45 kW at 750 V |
| Operating Frequency at DC-3 and DC-5 | Maximum 600 1/h |
| Mounting Position | +/-22.5° rotation possible on vertical mounting surface; can be tilted +/- 22.5° |
| Mounting Type | Screw fixing |
| Dimensions (H x W x D) | 177.5 mm x 143 mm x 184 mm |
| Required Spacing | Various spacings required for side-by-side mounting and for proximity to grounded/live parts |
| Type of Electrical Connection | Screw-type terminals |
| Conductor Cross-Sections | For auxiliary contacts: 2x (1 ... 2.5 mm²) solid or stranded, 2x (0.75 ... 1.5 mm²) finely stranded with core end processing |
| UL/CSA Ratings | Auxiliary contacts rated A600 / P600 according to UL |
| Short-Circuit Protection | Fuse link design for main and auxiliary circuit protection |
| Protection Class IP | IP00 on the front; IP20 with box terminal/cover |
| Product Function | Mirror contact according to IEC 60947-4-1 |
The Siemens 3TC4817-0LB4 is a robust and reliable contactor engineered to facilitate efficient and safe switching, control, and protection of electrical circuits. This component is designed for DC operation and is equipped with a 2-pole configuration, making it suitable for a wide range of industrial applications. With an impressive insulation voltage rated value of 800V and a rated operational current of 75A at 750V, it ensures consistent performance even in demanding environments.
This contactor boasts a size 4 frame and comes with auxiliary contacts configured as 21 (2NO + 1NC), enhancing its functionality for complex circuit designs. The inclusion of a varistor and series resistor provides additional surge protection, ensuring the longevity of the device and the safety of the system it is integrated into.
The 3TC4817-0LB4 operates within a voltage range of 0.7 to 1.25 times the rated control supply voltage, offering flexibility and reliability in various operating conditions. Its mechanical service life is rated at a remarkable 10 million switching cycles, highlighting the durability and quality of Siemens engineering.
Designed with practicality in mind, the contactor allows for a mounting position with a +/-22.5° rotation on a vertical mounting surface, and it can be fastened securely with screw fixing. The dimensions are carefully considered to ensure it fits seamlessly into electrical assemblies, with a height of 177.5mm, a width of 143mm, and a depth of 184mm.
The Siemens 3TC4817-0LB4 is a testament to Siemens' commitment to quality, reliability, and innovation in electrical component design. It is an essential part of any electrical system where precise control and protection are paramount.
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Frequently Asked Questions
What size is the contactor?
The contactor is a size 4, which is a designation used to specify its physical and electrical characteristics.
Can this contactor be used with DC voltage?
Yes, this contactor is designed for DC operation and can handle operational currents up to 75 A at voltages up to 750 V.
What are the ambient temperature limits for operating this contactor?
The contactor can operate within an ambient temperature range of -40 to +70 degrees Celsius.
What type of auxiliary contacts does this contactor have?
This contactor comes with 2 normally open (NO) and 1 normally closed (NC) auxiliary contacts, designated as 21.
What is the insulation voltage rating of this contactor?
The insulation voltage rated value for this contactor is 800 V.
What is the mechanical service life of the contactor?
The mechanical service life of the contactor is typically 10 million operating cycles.
Does the contactor have a surge suppressor?
Yes, the contactor is equipped with a varistor for surge suppression.
What is the control supply voltage for this contactor?
The control supply voltage for this contactor is rated at 24 V DC.
What are the dimensions of the contactor?
The contactor has a height of 177.5 mm, a width of 143 mm, and a depth of 184 mm.
Is there any specific mounting position required for this contactor?
The contactor can be mounted with a +/-22.5° rotation on a vertical mounting surface and can be tilted forward and backward by +/- 22.5°. It can also be mounted standing on a horizontal surface.
