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Specification & Description
| Specification | Description |
|---|---|
| Part Number | LADR4 |
| Manufacturer | Schneider |
| Product Type | Time Delay Auxiliary Contact Block |
| Contact Composition | 1 Normally Open (NO) + 1 Normally Closed (NC) |
| Timer Type | Off Delay |
| Time Delay Range | 10 to 180 seconds |
| Rated Operational Voltage (Ue) | 690 V AC 25...400 Hz |
| Rated Insulation Voltage (Ui) | 690 V conforming to IEC 60947-5-1, 600 V - certifications UL, 600 V - certifications CSA |
| Conventional Free Air Thermal Current (Ith) | 10 A at 140 °F (60 °C) |
| Rated Operational Current (Ie) | 6 A at 120 V AC-15, 1.04 A at 690 V AC-15, 0.55 A at 125 V DC-13, 0.1 A at 600 V DC-13 |
| Irms Rated Making Capacity | 140 A at <= 690 V AC, 250 A at <= 690 V 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 |
| Mechanical Durability | 5 Million cycles |
| Minimum Switching Current | 5 mA |
| Minimum Switching Voltage | 17 V |
| Non-Overlap Time | 1.5 ms on de-energisation and energisation with no overlap between NC and NO contacts |
| Insulation Resistance | > 10 MOhm |
| Connections - Terminals | Screw clamp terminals for cables 1…2.5 mm², flexible with or without cable end, and rigid |
| Tightening Torque | 1.7 N.m with screwdriver flat Ø 6 mm or Philips No 2 |
| Dimensions (Height x Width x Depth) | 48 mm x 44 mm x 61 mm |
| IP Degree of Protection | IP20 conforming to IEC 60529 |
| Ambient Air Temperature for Operation | -40…158 °F (-40…70 °C) |
| Ambient Air Temperature for Storage | -76…176 °F (-60…80 °C) |
| Operating Altitude | Up to 3000 m without derating |
| Environmental Characteristic | Normal environment |
| Protective Treatment | TH conforming to IEC 60068 |
| Sustainable Offer Status | Green Premium product |
| Compliance | REACh, EU RoHS Directive, China RoHS Regulation |
| Mercury Free | Yes |
| PVC Free | Yes |
| Product Disposal | Must be disposed of in accordance with European Union waste collection regulations |
The Schneider LADR4 is a time delay auxiliary contact block designed to enhance the functionality of control relays and contactors within your electrical systems. This robust component offers a single normally open (NO) and a single normally closed (NC) contact, making it a versatile choice for various applications. It is engineered to provide an off delay timing range of 10 to 180 seconds, allowing for precise control in your circuitry.
Constructed to meet the high standards of the TeSys product range, the LADR4 ensures compatibility with TeSys D CAD, TeSys D LC1D, TeSys F LC1F, and TeSys F CR1F, among others. This ensures seamless integration with existing setups for a wide range of industrial applications. The contact block is designed for front mounting, facilitating easy installation and maintenance.
Rated for operational voltages up to 690 V AC at frequencies between 25 and 400 Hz, the LADR4 is equipped to handle substantial electrical loads with a rated insulation voltage of 690 V, conforming to IEC 60947-5-1 standards. It also boasts a conventional free-air thermal current of 10 A at 60°C, demonstrating its capability to sustain regular operation without overheating.
The LADR4's mechanical durability is proven with a rating of 5 million cycles, ensuring long-term reliability and performance. The minimum switching current and voltage are rated at 5 mA and 17 V, respectively, which allows for the switching of low-level electrical signals, making it suitable for a variety of control logic scenarios.
This contact block is a Green Premium product, reflecting Schneider Electric's commitment to sustainable development and compliance with environmental regulations. It is mercury-free and adheres to the EU RoHS Directive, ensuring that it is free from certain hazardous materials and is suitable for safe disposal within European Union markets.
The LADR4's compact dimensions and screw clamp terminals make it a practical choice for space-constrained environments, while its dark grey colour and IP20 degree of protection ensure it blends into industrial settings and is protected against solid objects larger than 12.5 mm.
In summary, the Schneider LADR4 time delay auxiliary contact block is a reliable and eco-friendly component that offers precise timing control, robust performance, and compatibility with a range of TeSys products, making it an essential part of your industrial control systems.
Commonly Asked Questions
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Frequently Asked Questions
What is the function of this time delay auxiliary contact block?
The time delay auxiliary contact block is designed to provide an off delay timing function for control circuits. It delays the opening of its contacts for a set period after the power supply is turned off, allowing for various control and safety functions within an electrical circuit.
Can this contact block be mounted on any contactor?
No, this contact block is specifically designed to be compatible with TeSys D, TeSys F contactors, and certain TeSys Deca models. It is important to check the range compatibility for proper integration.
What are the voltage and current specifications for this contact block?
The contact block is rated for a operational voltage of 690 V AC at frequencies between 25 to 400 Hz, and has a conventional free air thermal current rating of 10 A at 60°C.
What is the time delay range that can be set on this contact block?
The time delay range that can be set on this contact block is from 10 to 180 seconds, allowing for a wide range of timing functions to suit different applications.
How is the contact block protected against environmental factors?
The contact block has an IP20 degree of protection conforming to IEC 60529 and a protective treatment of TH conforming to IEC 60068, ensuring it is safeguarded against normal environmental conditions.
What type of terminals does this contact block have for wiring?
This contact block is equipped with screw clamp terminals that can accommodate cables ranging from 1 to 2.5 mm², both flexible with cable end and rigid types.
Is the contact block RoHS compliant?
Yes, the contact block is compliant with the EU RoHS Directive, which restricts the use of certain hazardous substances in electrical and electronic equipment.
What is the tightening torque for the terminals on this contact block?
The recommended tightening torque for the terminals on this contact block is 1.7 N.m, ensuring a secure and reliable connection.
How should this product be disposed of at the end of its life?
At the end of its life, the product must be disposed of following specific waste collection guidelines and should never end up in rubbish bins, in accordance with WEEE regulations.
What is the mechanical durability of this contact block?
The mechanical durability of this contact block is rated at 5 million cycles, indicating its ability to withstand a significant number of operations over its lifespan.
Part conditions explained
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Used: The product has been previously owned and has been used. It may show signs of wear and tear but is still functional and operational. The condition may vary depending on the specific item and its usage history.
