TELEMECANIQUE LA1KN02 Schneider Electric

( Brand: Telemecanique ), ( Manufacturer Part Number: LA1KN02 )

Review TELEMECANIQUE Schneider Electric Used

The **Schneider Electric Telemecanique LA1KN02** is a high-performance, compact motor starter designed for reliable and efficient control of three-phase AC induction motors in industrial, commercial, and automation applications. Part of Schneider Electric s robust **Acti9** series, this thermal overload relay combines advanced thermal protection with precise motor control to ensure optimal performance while safeguarding equipment from overloads, short circuits, and other electrical faults. Engineered with a **1-pole, 3-phase** configuration, the LA1KN02 is ideal for applications requiring up to **2.2 kW (3 HP)** at 230V or **3.7 kW (5 HP)** at 400V, making it versatile for small to medium-sized motor-driven systems such as pumps, fans, conveyors, compressors, and HVAC units. Its compact **DIN-rail mounting** design allows for space-efficient installation in control panels, enclosures, or directly on machinery, while its modular construction simplifies integration into existing automation architectures.

At the heart of the LA1KN02 is a **thermal overload relay** with **adjustable trip settings**, enabling precise tuning to match the motor s rated current and environmental conditions. The relay features **class 10 or 10A** thermal elements, providing accurate protection against sustained overloads, while its **electromagnetic coil** ensures rapid tripping in the event of short circuits or phase failures. The device incorporates **Schneider Electric s patented Acti9 technology**, which enhances reliability through improved thermal stability, reduced contact wear, and extended service life critical factors in demanding industrial environments where uptime is paramount. Additionally, the LA1KN02 supports **remote monitoring and control** via its **auxiliary contacts**, allowing for seamless integration with PLCs, SCADA systems, or human-machine interfaces (HMIs) for enhanced automation and diagnostics.

Safety and ease of use are prioritized in the LA1KN02 s design, featuring a **clear, labeled front panel** with **LED indicators** for overload, short circuit, and auxiliary contact status, enabling quick troubleshooting. The relay s **snap-action contacts** ensure clean, reliable switching with minimal arcing, reducing the risk of contact welding and improving longevity. For added flexibility, the unit offers **optional accessories**, such as **remote reset functionality** or **auxiliary relays**, which can be easily integrated to meet specific application requirements. Compliance with **IEC/EN standards**, including **IP20 protection rating**, ensures durability in standard indoor environments, while its **wide operating temperature range (-25 C to 70 C)** accommodates a variety of climates. Whether deployed in manufacturing plants, renewable energy systems, or building automation, the **Telemecanique LA1KN02** delivers a balance of performance, safety, and simplicity, making it a trusted choice for engineers and technicians seeking dependable motor protection and control.

### **Pros and Cons of buying a Telemecanique LA1KN02 (Schneider Electric) Contact Relay**

The **Telemecanique LA1KN02** is a compact, general-purpose contact relay designed for industrial and automation applications. Below is a detailed analysis of its advantages and disadvantages.

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### **Pros**

1. **Reliability and Durability**

The LA1KN02 is part of Schneider Electric s Telemecanique series, known for robust construction and long-term performance. It is designed to withstand harsh industrial environments, including temperature fluctuations, vibrations, and electrical noise.

2. **Compact and Space-Efficient Design**

Its small form factor (18.5 mm width) makes it ideal for applications where space is limited, such as in control panels, PLC systems, or modular racks.

3. **High Contact Capacity**

The relay supports a maximum contact rating of **10 A (AC-15, 250 V)** and **2 A (DC-13, 30 V)**, which is sufficient for many low-power control applications, including signaling, motor starters (with proper sizing), and sensor control.

4. **Wide Operating Voltage Range**

It operates reliably across a broad input voltage range (typically **5 30 V DC or 12 250 V AC**), making it versatile for different power supply configurations.

5. **Low Power Consumption**

The relay consumes minimal current (typically **

6. **Fast Switching Speed**

With a typical contact bounce time of **

7. **Easy Installation and Wiring**

The relay features a **screw-terminal design**, allowing for straightforward wiring without the need for specialized tools. It can be mounted on a DIN rail or panel, depending on the variant.

8. **Compatibility with Schneider Ecosystem**

As part of Schneider Electric s product line, it integrates seamlessly with other Telemecanique, Altivar, and EcoStruxure components, simplifying system design and maintenance.

9. **Low Cost**

Compared to some specialized relays, the LA1KN02 offers a cost-effective solution for basic relay applications without sacrificing performance.

10. **Wide Availability and Spare Parts Support**

Being a widely used component, spare parts and replacements are readily available, reducing downtime in maintenance scenarios.

---

### **Cons**

1. **Limited Contact Rating for Heavy Loads**

The **10 A AC-15** rating is suitable for low-power applications but may be insufficient for high-current loads such as **heaters, solenoids, or motors without proper current limiting**. Overloading can lead to premature failure.

2. **No Built-In Overload Protection**

Unlike some motor starters or solid-state relays, the LA1KN02 lacks integrated overload protection. Users must implement external protection (e.g., fuses, thermal relays) to prevent damage from sustained overloads.

3. **Sensitive to Environmental Conditions**

While durable, prolonged exposure to **high humidity, dust, or corrosive atmospheres** can degrade performance. A **NEMA 1 or IP20 enclosure** is recommended for unprotected installations.

4. **Mechanical Wear Over Time**

As a **mechanical relay**, it is subject to **contact erosion** from repeated switching cycles. While designed for **millions of operations**, prolonged use may require maintenance or replacement of contacts.

5. **No Built-In Diagnostics**

Unlike some modern solid-state relays or PLCs, the LA1KN02 does not provide **real-time diagnostic feedback** (e.g., contact wear indicators). Failure detection relies on external monitoring.

6. **Limited Isolation Voltage**

The relay s **insulation strength** may not meet high-voltage isolation requirements (e.g., **> 1000 V AC**). For high-voltage applications, a **higher-rated relay or optocoupler isolation** may be necessary.

7. **No Built-In Snubber Circuit**

Without an external **RC snubber network**, rapid voltage transients (e.g., from inductive loads) can cause **arcing or contact welding**, reducing lifespan.

8. **Not Suitable for High-Speed AC Switching**

While it performs well for **DC and low-frequency AC**, it may not be optimal for **high-frequency AC switching** (e.g., > 60 Hz) due to potential contact chattering.

9. **Limited Customization Options**

Unlike programmable relays or PLCs, the LA1KN02 offers **no configurable logic or timing functions**. It is strictly a **mechanical switching device**.

10. **Potential for False Triggers in Noisy Environments**

In applications with **electrical noise** (e.g., near motors or power lines), the relay may experience **false triggering** unless proper **filtering or shielding** is implemented.

---

### **Conclusion**

The **Telemecanique LA1KN02** is a **reliable, cost-effective, and compact relay** well-suited for **low-to-medium power control applications** where simplicity and durability are prioritized. It excels in **signaling, sensor control, and basic motor starters (with proper sizing)** but is **not ideal for high-current, high-voltage, or high-frequency switching** without additional components.

Its **mechanical nature** means it requires **periodic maintenance** and **external protection** for optimal performance. However, for **basic relay needs within its specified ratings**, it remains a **practical and widely trusted choice**.

---

### **Recommendation**

You need a **simple, low-cost relay** for **AC/DC control signals** ( 10 A AC-15).

Your application involves **low-power switching** (e.g., LEDs, solenoids, sensors).

You require **compact DIN-rail mounting** in an industrial environment.

You are working within **Schneider Electric s ecosystem** and need compatibility with other Telemecanique products.

You require **high-current switching** (> 10 A AC) without additional protection.

Your application involves **high-voltage isolation** (> 1000 V AC).

You need **built-in overload protection, diagnostics, or programmable logic**.

The environment has **extreme humidity, dust, or corrosive conditions** without proper enclosure protection.

You are working with **high-frequency AC switching** (> 60 Hz).

- **For higher current:** Telemecanique **LA1KH series** (up to 16 A) or **Schneider solid-state relays** (e.g., **ATR series**).

- **For high-voltage isolation:** **Optocoupler-based relays** or **magnetic relays** (e.g., **Telemecanique LA1KP**).

- **For programmable logic:** **Schneider PLCs (e.g., Altivar ATV1200 with relay outputs)**.

- **For harsh environments:** **NEMA 4X or IP67-rated relays** with built-in protection.

The **LA1KN02 is a solid choice for basic relay applications** where cost, simplicity, and reliability are key. However, **careful consideration of load requirements and environmental conditions** is essential to ensure long-term performance. For applications beyond its specified limits, **supplementing with additional protection components** (fuses, snubbers, enclosures) is strongly recommended.

Details:

Part Number LA1KN02. Sells new and surplus product develops channels to purchase such. Call to use a shipping service other than the ones listed. All products are guaranteed to be working but may show signs of use if purchasing a used product.

Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection.

part #: la1kn02 prices

• $5.99-$95.04

specifications automationjack:

• brand: Telemecanique
• mpn: La1kn02

general automationjack:

• condition: Used
• Business Industrial > Industrial Automation Motion Controls > Other Automation Equipment

payments automationjack:

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offer automationjack:

• availability: In Stock
• options: Ship-to-home
• quantity: 1
• sold: 0
• started: March 3, 2026

returns automationjack:

• paid by: Buyer
• time: 30 Days
• policy: Returns Accepted
• method: Money back

seller automationjack:

• # reviews: 192682
• rating: 99.6%
• city: 1 Millennium Dr, Willingboro, NJ 08046

shipping automationjack:

• cost: $12.90
• class: Standard
• transit: 30-35 Days
• service: Standard
• type: Fixed

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