Schneider LT3SE00M Thermistor Protection Unit
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666084105 | |||||||
| +8613666084105 | ||||||||
| 13666084105 | ||||||||
| Add to | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Technical Specifications
| Parameter | Description |
|---|---|
| Brand | Schneider Electric |
| Model | LT3SE00M |
| Product Type | Thermistor Protection Unit |
| Product Series | TeSys LT3 |
| Main Function | Monitors PTC thermistor probes to protect motors against overheating |
| Control Circuit Voltage | 230 V AC, 50/60 Hz |
| Control Voltage Limits | 0.85–1.1 × rated control voltage |
| Reset Type | Automatic reset |
| Output Contact Configuration | 1 normally closed (NC) contact |
| Conventional Thermal Current (Ith) | 5 A |
| Rated Insulation Voltage (Ui) | 500 V AC |
| Rated Operational Voltage (Ue) | 250 V AC, 50/60 Hz |
| PTC Probe Compatibility | Compatible PTC probes conforming to the specified IEC 60034-11 characteristics |
| Number of PTC Probes | 0–6 |
| Tripping Resistance | 2700–3100 Ω |
| Reset Resistance | 1500–1650 Ω |
| Short-Circuit Detection Resistance | 20 Ω maximum |
| Holding Power Consumption | 1 W |
| Holding Apparent Power | 2.5 VA |
| Mounting Type | DIN rail mounting |
| Connection Type | Cage terminals |
| Typical Applications | Motor temperature monitoring, industrial motor protection, and control panels |
| Operating Temperature | -25°C to +60°C |
| Dimensions | 100 × 100 × 22.5 mm |
| Weight | 0.22 kg |
FAQ
Q1: What is the main function of the Schneider LT3SE00M thermistor protection unit?
The LT3SE00M monitors PTC thermistor probes installed in motor windings. When the monitored temperature causes the probe resistance to enter the tripping range, the unit changes its output contact state to initiate a protective control response, helping prevent motor overheating.
Q2: Which type of temperature sensor is compatible with the LT3SE00M?
The unit is designed for PTC thermistor probes with electrical characteristics compatible with its monitoring circuit. The probes should meet the applicable resistance and temperature characteristics specified for the unit. Confirm probe compatibility before connecting the sensor circuit.
Q3: How does the automatic reset function work?
After the monitored condition returns to the specified reset resistance range, the unit automatically restores its normal operating state. Because automatic resetting can allow a motor to restart when the control circuit permits it, the overall control system should be designed to prevent unexpected machine movement.
Q4: What resistance values indicate a trip or reset condition?
The specified tripping resistance range is 2700–3100 Ω, while the reset resistance range is 1500–1650 Ω. These thresholds help the unit distinguish between normal probe conditions and a potential motor overheating condition.
Q5: What does the normally closed output contact do?
The single NC output contact is used in the external control circuit to signal a protection condition or interrupt the relevant control path. Its exact role depends on the motor starter and control circuit design. Verify the wiring diagram before commissioning.
Q6: How many PTC thermistor probes can the LT3SE00M monitor?
The specified probe capacity is up to six PTC thermistor probes. When multiple probes are used, they must be connected according to the manufacturer’s wiring instructions and the requirements of the motor protection circuit.
Q7: What should I check if the LT3SE00M trips when the motor is not overheating?
Check the PTC probe wiring for loose terminals, damaged insulation, short circuits, and incorrect connections. Measure the probe circuit resistance with the equipment safely isolated, and inspect the sensors for damage. Also verify the supply voltage and ensure the probes meet the required resistance characteristics.
Q8: Is the LT3SE00M still available, and what should be considered when replacing it?
Schneider Electric has listed the LT3SE00M as discontinued in some regional product catalogs. The manufacturer lists the RM35TM50MW as a replacement candidate, but it should not be assumed to be a direct drop-in equivalent. Before replacement, compare supply voltage, input sensor compatibility, output contact configuration, protection functions, and mounting and wiring requirements.
Schneider LT3SE00M Thermistor Protection Unit is in stock. Please contact us for a quick quote and competitive pricing.
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666084105 | |||||||
| +8613666084105 | ||||||||
| 13666084105 | ||||||||
| Add to | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Company Introduction
Xiamen Shengruite Trading Co., Ltd. is a company specializing in the supply of industrial PLC spare parts.
We provide high-quality PLC spare parts to customers in the global manufacturing, energy and power, chemical and other fields.
Since its establishment in 2011, after 13 years of rapid development, the cumulative global shipments have reached 223,650 pieces, with an annual output value of US$50 million.
Successfully served more than 500 customers in more than 100 countries and regions including Saudi Arabia, UAE, the United States, Europe, Africa, and Southeast Asia
Our Mission
Provide customers with the best quality PLC spare parts and the fastest delivery service to ensure that their industrial automation systems are always in the best operating condition.
We provide a 1-year warranty service, and we support returns and exchanges for any issues to ensure your rights and interests are fully protected.
We can provide detailed product images upon request, and our team can arrange warehouse photos for confirmation to ensure you have all the information you need before making a purchase.
Shipping times vary depending on your location. With the support of our 16 global warehouses, we strive to deliver orders as quickly as possible. Contact us to get an estimated delivery time for your specific location.
The minimum order quantity (MOQ) is typically one unit. However, for larger orders, please contact us for potential discounts and pricing details.
Yes, we offer competitive pricing for bulk purchases. Please reach out to our sales team with the specifics of your order to receive a custom quote.
We accept various payment methods for wholesale orders, including bank transfers (T/T), letters of credit, and other options upon agreement. For large transactions, please contact us directly for payment terms.
Yes, we offer flexible ordering options for both small and large quantities. Whether youre looking for a single unit or a large batch, we can accommodate your needs.
We occasionally offer promotional discounts for new wholesale customers. Contact us to learn more about any current offers available for first-time buyers.
If you are unsure of compatibility with your existing setup please provide your system details and our support team can verify compatibility prior to purchase.
Returns are accepted within 30 days if the product is unused, unopened, and in its original packaging. Please note that return shipping and associated costs are the buyer\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’s responsibility.
Yes, we offer technical support for the installation and integration of our products. Our team can assist with setup, configuration, and troubleshooting to ensure a smooth installation.
