ABB Relay Module 107N139

( Brand: Abb ), ( Manufacturer Part Number: 1SNA645071R0000 ), ( Part Type: Module )

Review ABB 1sna 645 071 R0000 Relay Module #107n139

The **ABB 1SNA645071R0000 (1SNA 645 071 R0000) Relay Module** is a high-performance, compact industrial relay designed for demanding automation and control applications within electrical and mechanical systems. Part of ABB s robust **1SNA** series, this module combines precision engineering with reliability to deliver seamless switching functionality in a variety of environments, from factory automation to energy management and building automation. Engineered with a **107N139** designation, this specific variant is optimized for applications requiring **AC or DC control signals**, making it versatile for both low-voltage and medium-voltage control circuits. The relay operates with a **coil voltage range of 24 240V AC/DC**, ensuring compatibility with a wide array of standard control systems, while its **contact rating of 10A at 250V AC** (or equivalent DC ratings) provides sufficient current-handling capacity for most standard load applications, including motors, solenoids, and lighting circuits.

What sets this relay apart is its **modular and scalable design**, allowing seamless integration into ABB s **ACS880, ACS850, or other compatible control platforms**, as well as third-party systems through standardized interfaces. The module features **NO (Normally Open) and NC (Normally Closed) contacts**, along with a **common terminal**, enabling flexible wiring configurations for complex control logic. Its **solid-state construction** ensures durability against mechanical wear, while the **hermetically sealed contacts** protect against environmental contaminants such as dust, moisture, and corrosive fumes, making it ideal for harsh industrial settings. Additionally, the relay incorporates **fail-safe mechanisms**, such as **coil supervision** and **contact monitoring**, to enhance system reliability by detecting faults like open circuits or contact welding, thereby minimizing downtime.

For applications requiring **remote monitoring and diagnostics**, the **1SNA645071R0000** can be integrated with ABB s **Drive Commander** or other advanced control systems, providing real-time feedback on relay status, coil current, and contact state. Its **compact footprint** and **standardized mounting options** (such as DIN rail or panel mounting) allow for efficient space utilization in control panels, while its **low power consumption** ensures energy efficiency in long-term operation. Whether used in **motor starters, HVAC systems, or process automation**, this relay module delivers consistent performance with minimal maintenance, making it a trusted component for engineers and technicians seeking a balance of **reliability, flexibility, and ease of integration** in modern control architectures.

### **Pros and Cons of buying a ABB 1SNA645071R0000 (1SNA 645 071 R0000) Relay Module (107N139)**

#### **Overview**

The **ABB 1SNA645071R0000** is a **125V AC, 10A, single-pole relay module** commonly used in industrial automation, control panels, and PLC systems. It is part of ABB s **1SNA series**, known for reliability in harsh environments. Below is a detailed analysis of its advantages and limitations.

---

### **Pros**

1. **High Reliability and Durability**

- ABB is a well-established manufacturer with a strong reputation for industrial-grade components. This relay is designed for **long-term operation** in demanding environments, including temperature fluctuations, vibration, and electrical noise.

- The **107N139** variant is often used in **PLC systems, motor starters, and control circuits**, where reliability is critical.

2. **Industrial-Grade Specifications**

- **Voltage Rating (125V AC)** and **Current Rating (10A)** make it suitable for **standard industrial applications** without overheating or premature failure.

- **Low contact resistance** ensures efficient switching with minimal energy loss.

- **High insulation resistance** (typically >100 M ) prevents leakage currents in critical circuits.

3. **Compatibility with ABB and Siemens Systems**

- This relay is **widely compatible** with **ABB s own PLCs (e.g., ACS880, ACS580)** and **Siemens S7-1200/1500** systems, making it a **plug-and-play solution** in many automation setups.

- It follows **standard relay mounting formats**, allowing easy integration into **DIN rail or panel-mounted systems**.

4. **Low Maintenance Requirements**

- Unlike mechanical relays with moving parts that wear out over time, **solid-state or high-quality electromechanical relays** like this one have **long operational lifespans** (often **100,000 switching cycles**).

- No lubrication or adjustment is needed, reducing downtime.

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

- ABB has a **global distribution network**, meaning this relay is **easily replaceable** in case of failure.

- It is a **commonly stocked part** in industrial supply chains (e.g., RS Components, Mouser, local distributors).

6. **Safety Features**

- **Arc suppression** (via snubber circuits in many ABB relays) reduces **electrical noise** and **contact erosion**, improving longevity.

- **Overload protection** (if integrated into a larger system) helps prevent damage from short circuits.

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

- While not the **cheapest relay** on the market, its **longevity and reliability** make it **cost-effective in large-scale industrial deployments** where downtime is expensive.

- Avoids frequent replacements, reducing **maintenance costs over time**.

---

### **Cons**

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

- ABB relays are **premium-priced** compared to **no-name or generic brands** (e.g., Omron, Schneider, or Chinese manufacturers).

- For **low-budget projects**, cheaper alternatives (e.g., **10A AC relays from RS or Amazon**) may suffice.

2. **Limited to 10A and 125V AC**

- If your application requires **higher current (e.g., 16A, 25A) or higher voltage (e.g., 250V AC)**, this relay is **not suitable** you would need a **heavier-duty model** (e.g., ABB 1SNA645072 for 16A).

- For **DC applications**, a different relay (e.g., ABB 1SNA645073 for DC) is required.

3. **Potential Compatibility Issues with Non-ABB Systems**

- While it works well with **ABB and Siemens**, some **third-party PLCs or control systems** may require **specific relay characteristics** (e.g., coil voltage, mechanical dimensions).

- Always **check datasheet compatibility** before integration.

4. **Slightly Bulkier Than Some Alternatives**

- The **physical size** (standard **22.5mm width DIN rail mount**) is **larger than some compact relays**, which may be a constraint in **space-limited panels**.

- If **miniature relays** are needed, alternatives like **Omron G5LE** or **Schneider TE** may be more suitable.

5. **Dependence on ABB s Support Network**

- If ABB **discontinues support** for this model (unlikely but possible), finding **replacement parts or technical documentation** could become difficult.

- Unlike **universal brands**, ABB does not always provide **open-source alternatives**.

6. **Potential for Overkill in Simple Applications**

- For **low-voltage, low-current applications** (e.g., **signal relaying, LED control**), a **cheaper, simpler relay** (e.g., **12V DC relay**) may be sufficient.

- The **10A rating** is **more than needed** for many small-scale projects, leading to **unnecessary cost**.

7. **No Built-In Diagnostics**

- Unlike **smart relays** (e.g., **Siemens 3RT3 series**), this relay **does not provide diagnostic feedback** (e.g., contact wear, coil failure detection).

- Troubleshooting may require **external monitoring** or **manual inspection**.

---

### **Conclusion**

The **ABB 1SNA645071R0000 (107N139) relay module** is a **high-quality, reliable choice** for **industrial automation, PLC systems, and medium-power control applications** where **durability and compatibility with ABB/Siemens systems** are critical. Its **10A, 125V AC rating** makes it suitable for **standard motor control, lighting circuits, and general switching tasks**.

- **Budget-sensitive projects** (cheaper alternatives exist).

- **High-current or high-voltage applications** (requires a different model).

- **Space-constrained designs** (larger than some miniature relays).

- **Simple, low-power signal relaying** (overkill for basic uses).

If **reliability, brand support, and industrial-grade performance** are priorities, this relay is an **excellent investment**. If **cost or specific requirements** (e.g., DC, higher current) are concerns, **alternatives like Omron, Schneider, or generic relays** may be more appropriate.

---

### **Recommendation**

- You are working with **ABB or Siemens PLC systems**.

- Your application requires **10A, 125V AC switching** in an **industrial environment**.

- **Long-term reliability and minimal maintenance** are key.

- You need **standardized, easy-to-source spare parts**.

- You need **lower cost** Look at **Omron G5LE, Schneider TE, or RS Pro relays**.

- You require **higher current (16A )** Use **ABB 1SNA645072 or similar**.

- Your system uses **DC voltage** Switch to **ABB 1SNA645073 or equivalent**.

- Space is limited Opt for **miniature relays** (e.g., **Omron G2R**).

For most **standard industrial applications**, this relay is a **safe and dependable choice**. Always **verify compatibility with your specific control system** before purchasing.

Details:

part #: 1sna645071r0000 prices

• $26.00-$65.46

specifications automationjack:

• brand: Abb
• mpn: 1sna645071r0000
• part type: Module

shipping automationjack:

• transit: 3-7 Days
• class: Standard
• carrier: USPS
• service: USPS Ground Advantage
• type: Fixed
• cost: $0.00

payments automationjack:

• credit card: Visa
• wallet: Paypal
• cash
• other

returns automationjack:

• policy: No Returns

general automationjack:

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

offer automationjack:

• sold: 0
• best offers: True
• quantity: 2
• options: Ship-to-home
• availability: In Stock
• started: May 13, 2026

seller automationjack:

• # reviews: 21309
• city: Scottsburg, Indiana
• rating: 99.9%

Abb 1SNA645071R0000 Is Similar To:

• Abb 3bse014162r1 Used Dsai 155a 14ch Thermo Couple Module Dsai155a Free Shipping (31.4% similar) 25B-D1P4N104. 22B-D010N104. Operating various types of industrial products, mechanical modules. Dear customer, there is one things need to be noticed before placing an order. 25B-D6P0N104. 25B-D2P3N104...(August 1st, 2024)
• Abb Rb122g-24vuc Boxed Interface Relay 1sna645012r2500 277148 (31.1% similar) Output signal: 5-250 vac. Output: 2 c/o PDT contacts. Manufacturer part number: RB122G-24VUC. Abb RB122G-24VUC...(August 21st, 2024)
• Abb Ai561 P Vt55 A1 1tne968902r1101 Bus Module Digital I o Prototype (28.1% similar) Price is for 01 PC...(September 22nd, 2024)
• Abb Sil3 2tla020052r1000 Ver H Cat 4 Safety Relay Vital 1 (41% similar) Abb 2TLA020052R1000 vacate 4 safety relay SIL3 vital 1 - used, in good working condition...(October 20th, 2024)
• Abb 3bdz000398r1 Rlm01 Redundancy Link Module (43.8% similar) Used- Abb RLM01 redundancy link module 3BDZ000398R1...(October 28th, 2024)
• Abb 1sap220700r0001 One Ci502-pnio Communication Module Used (41.7% similar) Return police: shipping detail. Serious buyers only, please. The product at fixed price, please pay as soon possible after the purchase. You should receive the item within 2-4 weeks. Please leave a telephone number for on-time delivery. It will just take you 1 minute...(October 31st, 2024)
• Abb Rmba-01 Modbus Adapter Module Used (36.7% similar) For example, programmable logic controllers plc's, distributed control systems DC's's, human machine interface him's, variable speed drives BSD's, power supplies, pressure transmitters and everything in between. Is Abb RMBA-01 not the part you are wanting. RMBA-01 Abb mod bus adapter module, for ...(December 1st, 2024)
• Abb Gnt0164000r0001 Power Board Module Circuit Card Pm5301 Used (40.7% similar) Is Abb GNT0164000R0001 not the part you are wanting. GNT0164000R0001 Abb power board module, circuit card, PM5301. For example, programmable logic controllers plc's, distributed control systems DC's's, human machine interface him's, variable speed drives BSD's, power supplies, pressure transmitters ...(December 9th, 2024)
• Abb Fdna-01 3abd68469341 Adapter Module (34.3% similar) Part #: Abb FDNA-01 for sale...(December 16th, 2024)
• Abb Pm861k01 1pc Used 3bse018105r1 Module (35.6% similar) Please leave a telephone number for on-time delivery. Return police: it will just take you 1 minute...(January 7th, 2025)
• Abb 3hne00025u1 3hne00025-1 13 Dsqc 350 I o Remote Module (42.7% similar) Shipping services. This item is being sold as is, pictured. 2-J3E-95634-ZJ-X. Abb 3HNE00025-1/13 disc 350 i/o remote module 3HNE00025U1...(March 4th, 2025)