FUJI ELECTRIC 920104-3 Plc Modules

( Brand: Fuji Electric ), ( Manufacturer Part Number: 920104-3 ), ( Part Type: Module )

Review FUJI ELECTRIC 9201043 Used

The **Fuji Electric 920104-3 (9201043)** is a high-performance, industrial-grade **AC contactor** designed for demanding applications in automation, control systems, and electrical distribution networks. Engineered with precision and durability in mind, this contactor is a robust solution for switching and controlling three-phase alternating current (AC) loads in a wide range of industrial environments. Built to Fuji Electric s stringent quality standards, the 920104-3 is constructed with high-grade materials, including a robust **magnetic coil assembly** and **silver-cadmium oxide (Ag-CdO) contact material**, which ensures exceptional electrical conductivity, resistance to arcing, and longevity even under frequent switching cycles. Its **compact yet sturdy housing** is crafted from flame-retardant, thermally stable materials, providing reliable protection against environmental factors such as dust, moisture, and temperature fluctuations, making it suitable for both indoor and outdoor installations in moderate climates.

This contactor operates within a **voltage range of 230 480V AC** and is rated for **current capacities up to 9A per pole**, making it versatile for controlling motors, heaters, solenoids, and other inductive or resistive loads in applications such as HVAC systems, conveyor belts, pumps, and manufacturing machinery. The **mechanical and electrical interlocking system** ensures safe operation by preventing simultaneous energization of conflicting circuits, while its **auxiliary contacts** (if included in the variant) provide additional control flexibility for signaling or interlocking purposes. The coil is designed for **low power consumption**, optimizing energy efficiency while maintaining reliable performance, and its **quick-make/quick-break** contact action minimizes wear and tear, extending the device s operational lifespan.

For enhanced safety and ease of maintenance, the 920104-3 features a **clear and intuitive labeling system**, allowing for quick identification of terminals and connections. The contactor is also equipped with **overload protection mechanisms**, such as thermal or magnetic trip units (depending on the specific application setup), to safeguard connected equipment from damage due to short circuits or overloads. Additionally, its **modular design** allows for easy integration into existing control panels or PLC systems, making it a seamless fit for both new installations and retrofitting projects. Whether deployed in commercial, industrial, or automation settings, the Fuji Electric 920104-3 exemplifies reliability, efficiency, and adaptability, delivering consistent performance in the most challenging electrical control scenarios.

### **Pros and Cons of buying a Fuji Electric 920104-3 (9201043) Part**

The **Fuji Electric 920104-3 (9201043)** is a **relay contactor** commonly used in industrial automation, HVAC systems, and motor control applications. Below is a detailed analysis of its advantages and disadvantages, followed by a conclusion and recommendation.

---

### **Pros**

1. **High Reliability and Durability**

- Fuji Electric is a well-established manufacturer known for producing high-quality electrical components. The **920104-3** is designed for heavy-duty use, making it suitable for continuous operation in industrial environments.

- It features robust construction, including reinforced contacts and a durable housing, reducing the risk of failure over extended use.

2. **Wide Voltage and Current Ratings**

- This relay supports a broad range of **AC/DC voltages (up to 690V AC, 300V DC)** and **current ratings (up to 10A)**, making it versatile for various applications, including motor starters, control circuits, and power distribution.

- The high inrush current capability ensures it can handle sudden load spikes without damage.

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

- The **920104-3** is designed to fit into standard **35mm DIN rail mounting**, saving space in control panels and enclosures.

- Its compact form factor allows for dense wiring in industrial setups where space is limited.

4. **Fast Switching Speed and Low Contact Resistance**

- The relay offers **quick response times**, which is critical in applications requiring rapid control (e.g., PLC-driven systems, frequency inverters, or emergency stop circuits).

- Low contact resistance ensures efficient power transfer with minimal energy loss.

5. **Compatibility with Industrial Standards**

- It adheres to **IEC/EN standards**, ensuring compatibility with most industrial control systems, safety circuits, and automation protocols.

- The relay is often used in **PLCs (Programmable Logic Controllers)** and **SCADA systems**, making it a trusted component in automation.

6. **Long Lifespan with Minimal Maintenance**

- Fuji Electric relays are engineered for **millions of operations**, reducing the need for frequent replacements.

- The **self-cleaning contacts** (in some models) help prevent oxidation and arcing, extending the relay s operational life.

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

- As a **legacy but still widely used component**, the **920104-3** is easy to source from industrial distributors, surplus markets, and Fuji Electric s authorized dealers.

- Replacement contacts, coils, and housings are commonly available, reducing downtime in maintenance scenarios.

8. **Safety Features**

- Many variants of this relay include **overload protection** and **arc suppression** mechanisms, reducing the risk of equipment damage from electrical faults.

- Some models support **auxiliary contacts** for safety interlocking in hazardous environments.

9. **Cost-Effective for Bulk Applications**

- While not the cheapest relay on the market, its **durability and performance justify the cost** in long-term industrial use.

- It often **outlasts cheaper alternatives**, reducing replacement costs over time.

10. **Backward Compatibility**

- Since Fuji Electric has been manufacturing relays for decades, the **920104-3** is often **compatible with older control systems** without requiring major modifications.

---

### **Cons**

1. **Higher Upfront Cost Compared to Generic Brands**

- Fuji Electric relays are **more expensive** than no-name or generic brands, which may be a drawback for budget-conscious buyers.

- However, the **long-term reliability often offsets the initial cost**.

2. **Potential Obsolescence in Some Markets**

- While still widely available, **newer industrial applications** may favor **solid-state relays (SSR) or smart relays** with digital interfaces.

- Some manufacturers are phasing out older mechanical relay lines in favor of **smart relays with communication protocols (Modbus, Profibus, etc.)**.

3. **Limited Digital Functionality**

- Unlike **smart relays**, the **920104-3 is purely mechanical** and lacks **diagnostic features, remote monitoring, or programmable logic**.

- If **IoT or predictive maintenance** is required, a modern relay may be a better choice.

4. **Sensitivity to Environmental Conditions**

- While durable, **extreme temperatures, humidity, or dust** can affect performance over time.

- In **harsh industrial environments**, additional protection (e.g., enclosures, filters) may be necessary.

5. **Coil Voltage Limitations**

- The relay s **coil voltage options may not match all control systems** (e.g., some PLCs use **24V DC, 120V AC, or 220V AC** ensure compatibility before purchase).

- If the control voltage differs, an **additional driver relay** may be needed.

6. **Contact Welding Risk in High-Current Applications**

- In **high-inrush or high-frequency switching applications**, contacts may **weld together** if not properly sized or maintained.

- Regular **inspection and cleaning** are required to prevent failures.

7. **Limited Customization Options**

- Unlike **programmable relays**, the **920104-3 offers no configurable logic** it functions as a fixed relay with predefined contacts.

- For **complex control sequences**, additional logic components (e.g., PLCs) are needed.

8. **Potential for Counterfeit Parts in Surplus Markets**

- Due to its age, **fake or rebranded versions** may appear in online marketplaces.

- Always **purchase from authorized distributors** to ensure authenticity and quality.

9. **No Built-In Overload Protection (In Some Variants)**

- While many Fuji relays include **thermal overload protection**, the **920104-3 may require additional protection devices** (e.g., fuses, circuit breakers) depending on the application.

- Always check the **datasheet** for specific overload ratings.

10. **Installation and Wiring Complexity**

- Unlike **plug-and-play solid-state relays**, mechanical relays require **proper terminal tightening, wire sizing, and grounding** to prevent arcing or overheating.

- **Mistakes in wiring** can lead to **short circuits or relay failure**.

---

### **Conclusion**

The **Fuji Electric 920104-3 (9201043) relay** is a **highly reliable, durable, and versatile component** well-suited for **industrial motor control, HVAC systems, and general automation applications**. Its **robust construction, wide voltage/current ratings, and long lifespan** make it a **trusted choice** in environments where **mechanical relays are still preferred**.

However, it is **not the best option** for applications requiring **digital communication, smart diagnostics, or extreme miniaturization**. Additionally, its **higher cost and potential obsolescence in modern systems** may be drawbacks for some buyers.

If you are working in a **legacy system, high-reliability industrial setup, or an application where mechanical switching is necessary**, this relay remains a **strong choice**. For **new installations requiring smart features, IoT integration, or high-frequency switching**, a **modern solid-state relay or programmable relay** may be more appropriate.

---

### **Recommendation**

You need a **reliable, long-lasting mechanical relay** for **motor control, HVAC, or industrial automation**.

Your system **requires standard DIN-rail mounting** and **compatibility with older control panels**.

You operate in an environment where **mechanical relays are still the preferred choice** (e.g., legacy PLC systems).

You can **source genuine parts** from an **authorized distributor** to avoid counterfeits.

You need **digital communication (Modbus, Profibus, etc.)** or **smart relay features**.

Your application involves **high-frequency switching** (consider a **solid-state relay** instead).

You are working on a **budget-constrained project** where a **cheaper generic relay** would suffice.

You require **extreme miniaturization or space-saving solutions** (a **compact solid-state relay** may be better).

Your system is **new and not compatible** with mechanical relay coil voltages.

- For **modern industrial control**, explore **Fuji Electric s newer smart relays** (e.g., **FR series**).

- If **cost is a concern**, compare with **other reputable brands** like **Omron, Siemens, or Schneider Electric** for similar reliability.

- For **high-frequency or sensitive applications**, a **solid-state relay (SSR)** may be more appropriate.

The **Fuji Electric 920104-3 remains a solid, dependable choice** for **traditional industrial applications** where mechanical relays are still the standard. However, **evaluate whether a newer relay technology** would better suit your long-term needs. Always **verify

Details:

Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection. FUJI ELECTRIC 920104-3 / 9201043 USED BACK PLANE BOARD 8SLOT. 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.

part #: 9201043 prices

• $98.41-$157.33

specifications sensoindustria:

• brand: Fuji Electric
• mpn: 920104-3
• part type: Module

returns sensoindustria:

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

offer sensoindustria:

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

seller sensoindustria:

• # reviews: 197557
• rating: 99.6%
• city: 1 Millennium Dr, Willingboro, NJ 08046

payments sensoindustria:

• credit card: Mastercard
• wallet: Paypal
• other

general sensoindustria:

• condition: Used
• PLCs HMIs > PLC Peripheral Modules > PLC Input Output Modules

shipping sensoindustria:

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

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