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Specification & Description
| Specification | Description |
|---|---|
| Part Number | LADN203 |
| Manufacturer | Schneider Electric |
| Product Type | Auxiliary Contact Block |
| Range | TeSys D, TeSys D Control Relay |
| Device Short Name | LADN |
| Range Compatibility | TeSys D CAD, TeSys D LC1D, TeSys Deca CAD, TeSys Deca LC1D |
| Mounting Location | Front |
| Pole Contact Composition | 2 Normally Open (NO) Contacts |
| Contacts Operation | Instantaneous |
| Rated Operational Voltage (Ue) | 690 V AC 25...400 Hz |
| Rated Insulation Voltage (Ui) | 690 V conforming to IEC 60947-5-1, 600 V conforming to UL, 600 V conforming to CSA |
| Conventional Free Air Thermal Current (Ith) | 10 A (at 60 °C) |
| Rated Making Capacity (Irms) | 140 A AC conforming to IEC 60947-5-1, 250 A DC conforming to IEC 60947-5-1 |
| Permissible Short-Time Rating | 100 A at 60 °C for 1 s, 120 A at 60 °C for 500 ms, 140 A at 60 °C for 100 ms |
| Protection Type | GG fuse 10 A |
| Mechanical Durability | 30 Million cycles |
| Minimum Switching Current | 5 mA |
| Minimum Switching Voltage | 17 V |
| Non-Overlap Time | 1.5 ms on de-energisation and energisation, no overlap between NC and NO contact |
| Insulation Resistance | > 10 MOhm |
| Environmental Characteristic | Normal environment |
| IP Degree of Protection | IP20 conforming to IEC 60529 |
| Protective Treatment | TH conforming to IEC 60068 |
| Ambient Air Temperature for Operation | -5…60 °C |
| Ambient Air Temperature for Storage | -60…80 °C |
| Operating Altitude | Up to 3000 m without derating in temperature |
| Sustainable Offer Status | Green Premium product |
| REACh Regulation | Free of Substances of Very High Concern (SVHC) |
| EU RoHS Directive | Compliant |
| China RoHS Regulation | China RoHS Declaration |
| Environmental Disclosure | Product Environmental Profile |
| WEEE | Must be disposed of according to specific waste collection in the European Union |
The Schneider LADN203 is a meticulously engineered auxiliary contact block designed to complement the TeSys D range of contactors and control relays. This component is essential for users who require reliable and instantaneous switching operations within their electrical circuits. With a configuration of 2 normally open (NO) contacts, it offers a versatile solution for expanding control systems and enhancing circuit functionality.
Crafted for front mounting, the LADN203 ensures a seamless integration with existing setups, promoting ease of installation. The spring terminals accommodate cables up to 2.5 mm², both flexible and solid, without the need for cable ends, streamlining the connection process and maintenance.
Rated for an insulation voltage of 690 V in accordance with IEC 60947-5-1 standards, and operational voltages up to 690 V AC at frequencies between 25 and 400 Hz, this auxiliary contact block is suitable for a wide range of applications. It boasts a conventional free air thermal current of 10 A at 60°C and can handle making capacities of 140 A AC and 250 A DC, ensuring robust performance in demanding conditions.
The LADN203 is designed with safety and durability in mind, featuring an IP2x protection degree as per VDE 0106, and a TH protective treatment conforming to IEC 60068, ensuring it can withstand normal environmental conditions. With a mechanical durability of 30 million cycles, this component is built to last, providing a reliable solution for your control systems.
In line with Schneider Electric's commitment to sustainability, the LADN203 is a Green Premium product, compliant with the latest environmental standards, including REACh and EU RoHS directives. It is free of hazardous substances, such as toxic heavy metals and mercury, ensuring it not only meets but exceeds environmental and safety regulations.
The LADN203 is an indispensable component for those seeking to enhance the efficiency and reliability of their electrical control systems, with the assurance of quality and sustainability from Schneider Electric.
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Frequently Asked Questions
What is the function of this auxiliary contact block?
The auxiliary contact block is used to provide additional switching functions in a control circuit. It can be used for signalling, interlocking, and auxiliary circuits.
How can this contact block be mounted?
This contact block is designed for front mounting, which allows for easy installation directly onto compatible contactors and control relays.
What type of terminals does this contact block have?
The contact block is equipped with spring terminals, which are suitable for connecting both flexible and solid cables without the need for cable ends.
What is the rated operational voltage for this contact block?
The rated operational voltage for the LADN203 is 690 V AC at frequencies ranging from 25 to 400 Hz.
What are the environmental operating conditions for this contact block?
The contact block can operate in normal environmental conditions, with an ambient air temperature range for operation of -5 to 60°C and for storage from -60 to 80°C. It is also rated for use at altitudes up to 3000 meters without derating.
What is the IP degree of protection for this contact block?
The contact block has an IP20 degree of protection, conforming to IEC 60529, which provides protection against solid objects larger than 12mm but not against liquids.
Can this contact block be used with any contactor?
No, it is specifically designed to be compatible with TeSys D contactors and control relays, ensuring proper fit and function.
What is the thermal current rating for this contact block?
The conventional free air thermal current rating (Ith) for the contact block is 10 A at 60°C.
What certifications does this contact block hold?
The contact block is certified by international standards including UL, CSA, and it conforms to IEC and EN standards.
What is the mechanical durability of this contact block?
The mechanical durability of the contact block is rated at 30 million cycles, indicating its ability to withstand a high number of operations.
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