DAYTON 3N428 Severe Electric Motor 1HP 3PH

( Brand: Dayton ), ( Manufacturer Part Number: 3N428 ), ( Part Type: Motor ), ( Current Type: Universal ), ( Ac Phase: Three Phase ), ( Nominal Rated Input Voltage: 230 V ), ( Service Factor: 1.15 ), ( Insulation Class: F ), ( Nema Design Letter: Design B ), ( Actual Rated Input Voltage: 460 ), ( Base Rpm: 1745 ), ( Full Load Amps: 3.2 ), ( Unit Type: Unit )

Review DAYTON Severe Duty Electric Motor 1hp 3ph

The **Dayton 3N428 Severe Series Electric Motor**, a 1 horsepower, three-phase induction motor, represents a robust and reliable workhorse designed for demanding industrial applications where durability, efficiency, and performance are paramount. Engineered under Dayton s **Severe Series** line, this motor is built to withstand harsh operating conditions, including high ambient temperatures, excessive vibration, and frequent starts or stops, making it an ideal choice for environments where standard motors might falter. With a compact yet sturdy frame size of **56C**, this motor delivers a balanced combination of power and precision, ensuring consistent operation in machinery such as conveyors, pumps, compressors, and industrial fans where reliability is non-negotiable.

The **1 horsepower (746 watts) output** at a nominal **1725 RPM synchronous speed** (with a typical slip of around 5%) provides a steady and dependable torque curve, making it suitable for a wide range of applications requiring moderate to heavy-duty performance. Its **three-phase, 60 Hz** design ensures smooth and efficient operation when connected to standard industrial power sources, while its **NEMA Premium efficiency rating** (or equivalent) minimizes energy consumption without compromising power delivery, contributing to both cost savings and environmental sustainability. The motor s **Class B insulation** (130 C rise) and **F-class winding** further enhance its longevity, allowing it to operate reliably in environments where thermal stress is a concern.

One of the standout features of the **3N428 Severe Series motor** is its **enhanced mechanical robustness**, including a **rigid endbell construction** and **high-strength shaft** that resists deflection under load, reducing wear on connected equipment. The motor s **ball-bearing or sleeve-bearing options** (depending on the specific model variant) provide low-friction operation and extended bearing life, even in applications with moderate shock loads. Additionally, the **IP55 (NEMA 1) protection rating** ensures resistance to dust, dirt, and splashing water, making it well-suited for dirty or exposed industrial settings where protection against contaminants is critical.

Dayton s **Severe Series** motors are also designed with **ease of maintenance** in mind, featuring **accessible components** such as the fan guard, terminal box, and bearing housing for straightforward servicing. The **standard NEMA 4 mounting configuration** ensures compatibility with a wide range of industrial gearboxes, couplings, and mechanical systems, simplifying integration into existing machinery. For applications requiring **variable speed control**, this motor can be paired with compatible variable frequency drives (VFDs) to optimize performance across different load profiles, further extending its versatility.

Whether deployed in **manufacturing plants, mining operations, agricultural equipment, or HVAC systems**, the **Dayton 3N428 Severe Series 1HP three-phase motor** delivers a proven blend of **durability, efficiency, and performance**. Its **severe-duty construction** ensures minimal downtime and maximum uptime, while its **energy-efficient design** aligns with modern industrial standards for cost-effective operation. For engineers and operators seeking a motor that can endure the rigors of heavy-duty applications while maintaining reliability, the **3N428 Severe Series** stands as a dependable and high-performance solution.

### **Pros and Cons of buying a Dayton 3N428 Severe Electric Motor (1HP, 3-Phase)**

#### **Pros**

1. **High Quality and Durability** Dayton is a well-known brand in the industrial motor market, offering motors built to last under demanding conditions. The "Severe" designation suggests it is designed for harsh environments, including high shock, vibration, and temperature fluctuations.

2. **Reliable Performance** The 1HP rating provides consistent power output for applications like pumps, compressors, conveyors, and industrial machinery. Three-phase motors are generally more efficient and stable than single-phase alternatives, making them ideal for continuous-duty operations.

3. **Wide Compatibility** The motor is likely NEMA 56C frame size, which is a standard industrial frame, making it easy to integrate into existing systems. It may also be compatible with various voltage ranges (commonly 208V, 230V, 460V, etc.), depending on the model variant.

- Heavy-duty bearings for extended lifespan.

- Improved thermal protection to prevent overheating.

- Robust enclosure (likely IP54 or higher) for protection against dust, water, and contaminants.

- Enhanced vibration resistance, reducing wear on connected equipment.

5. **Energy Efficiency** Modern Dayton motors often incorporate energy-saving features, such as optimized windings and high-efficiency cores, which can reduce operational costs over time.

6. **Easy Maintenance** Many Dayton motors feature accessible components, such as replaceable bearings and seals, simplifying upkeep. The motor may also include built-in protection mechanisms like thermal overload relays.

7. **Warranty and Support** Dayton products typically come with manufacturer warranties (often 1 2 years), and the brand has a strong reputation for customer support, including technical assistance and spare parts availability.

8. **Cost-Effective for Industrial Use** While the upfront cost may be higher than some consumer-grade motors, the long-term reliability and efficiency often justify the investment in industrial applications.

---

#### **Cons**

1. **Higher Initial Cost** Compared to standard or off-brand motors, the Dayton 3N428 Severe is likely more expensive due to its premium build quality and severe-duty features. This may be a barrier for small businesses or budget-conscious buyers.

2. **Specialized Applications** While versatile, this motor is optimized for industrial use. For light-duty or residential applications, a less expensive motor may suffice, leading to unnecessary overkill.

3. **Voltage and Frequency Requirements** Three-phase motors require compatible electrical infrastructure (e.g., 3-phase power supply). If your setup lacks this, you may need additional equipment (e.g., a VFD or phase converter), adding complexity and cost.

4. **Weight and Size** Industrial motors are bulkier than smaller motors. Installation may require additional structural support or space considerations, especially in tight or older facilities.

5. **Potential Overkill for Low-Demand Use** If the motor is used in applications with minimal load (e.g., occasional use), its full 1HP capacity may not be fully utilized, leading to inefficiencies or wasted energy.

6. **Compatibility with Older Systems** Some older industrial setups may have mounting or electrical interfaces that don t align perfectly with modern motors. Retrofitting may require additional adapters or modifications.

7. **Limited Customization** Unlike some high-end motors, the Dayton 3N428 Severe may not offer extensive customization options (e.g., speed variations, special enclosures) without purchasing additional components.

8. **Dependence on Brand Support** While Dayton is reliable, issues may arise with availability of spare parts or technical support in remote or less industrialized regions, potentially causing downtime.

---

### **Conclusion**

The **Dayton 3N428 Severe 1HP 3-Phase Motor** is an excellent choice for **industrial, commercial, or heavy-duty applications** where reliability, durability, and efficiency are critical. Its severe-duty construction makes it ideal for environments with harsh conditions, frequent start-stop cycles, or high vibrational loads. The motor s compatibility with standard industrial frames and its energy-efficient design further enhance its value for continuous operation.

However, for **light-duty, residential, or low-budget applications**, the higher cost and robust features may not be justified. Buyers should also ensure their electrical setup supports three-phase power and that the motor s physical dimensions align with their installation space.

If the motor is purchased for a **long-term, high-demand application** (e.g., manufacturing, HVAC systems, agricultural equipment, or water pumps), the investment is likely to pay off in reduced maintenance, longer lifespan, and operational efficiency. For **short-term or low-load uses**, a more affordable motor may be a better fit.

---

### **Recommendation**

- You need a **highly reliable, durable motor** for industrial or commercial use.

- Your application involves **harsh operating conditions** (dust, moisture, vibration, temperature extremes).

- You require **consistent performance** in continuous-duty or frequent-start scenarios.

- You prioritize **long-term cost savings** through efficiency and reduced downtime.

- Your electrical system supports **three-phase power**.

- Your budget is tight, and the motor will be **underutilized** (e.g., occasional use).

- The application is **light-duty or residential**, where a standard or fractional HP motor would suffice.

- You lack **three-phase power** and cannot justify adding a VFD or phase converter.

- You need **customized speed or voltage options** not offered by this model.

**Final Verdict:** For the right industrial application, the Dayton 3N428 Severe is a **strong, well-engineered motor** that delivers value over its lifespan. Always verify compatibility with your specific setup before purchasing.

Details:

Buyers pay for return shipping. Designed with Insulation Class F, this NEMA Design B motor operates efficiently at 1745 RPM, making it ideal for demanding applications. Invest in the Dayton 3N428 for a durable and efficient solution to your industrial motor needs. Some exceptions may apply.

Three-Phase Efficiency Design improves energy utilization and consistent motor operation for industrial applications. Severe Duty Build Quality designed for harsh environments, offering improved resistance against dust, moisture, and vibration. Dayton 3N428 Severe Duty Electric Motor 1HP 3PH: The is engineered for high performance and reliability, featuring a robust output service factor of 1.15. With a three-phase power supply of 230/460V and current draw 3.2/1.6A at 60Hz, it ensures optimal functionality even in challenging environments up to 40 C.

Rigid Frame Construction ensures stability, reduced vibration, and long-term mechanical alignment. Class F Insulation System enhances thermal resistance, improving durability and extending operational life under high-load conditions. Cash on Pickup. Shipping: Shipping cost: UPS Calculated.

Let us know whats going on, and we ll provide you a return label.

part #: 3n428 price

• $899.99

specifications oelemot:

• brand: Dayton
• mpn: 3n428
• part type: Motor
• current type: Universal
• ac phase: Three Phase
• nominal rated input voltage: 230 V
• service factor: 1.15
• insulation class: F
• nema design letter: Design B
• actual rated input voltage: 460
• base rpm: 1745
• full load amps: 3.2
• unit type: Unit

offer oelemot:

• sold: 0
• options: Ship-to-home
• quantity: 1
• availability: In Stock
• best offers: True
• started: April 15, 2026

general oelemot:

• Industrial Automation Motion Controls > Electric Motors > General Purpose Motors
• condition: Used

returns oelemot:

• policy: Returns Accepted
• time: 14 Days
• paid by: Buyer
• method: Money back

payments oelemot:

• cash
• other
• wallet: Google-pay
• credit card: Diners-club

shipping oelemot:

• transit: 2-6 Days
• service: UPS Ground
• carrier: UPS
• cost: $86.89
• type: Calculated
• class: Standard

seller oelemot:

• # reviews: 24671
• city: Fleetwood, Pennsylvania
• rating: 99.8%

Dayton 3N428 Is Similar To:

• 20hn85 20hn85 Dayton Hvac Motor 1-15 (40.5% similar) Exchange is available but for any questions. Combined shipping is available, please for rates. All attempts are made to represent each item in an honest and forthright manner. 50 handling charge has been applied to the package help defer packaging costs. This extra step for you insures each order is...(December 1st, 2017)
• 11w352 Dayton Industrial Motor (46.8% similar) Never installed. Did not work for my application, too late to return it back grainier...(January 13th, 2018)
• 12vdc-25rpm Dayton Two Motors Dc Gear Motor Vdc Rpm Model (42.3% similar) These tested perfect. Everyone else wants over 50 for just one motor so this is a great deal two. Everything is digital now but rules required the equipment to be there until. This listing is for two Dayton, 12VDC, 25RPM, 1/1 60HP gear motors. They were removed from obsolete x-ray viewing equipment ...(September 8th, 2018)
• 1d170 Dayton Belt Drive Fan Blower Motor Hp Split Ph Rpm (44.7% similar) Condition: new, opened box to get pictures...(March 4th, 2019)
• 1lnh2 Dayton Model Dc Gear Motor Rpm Hp (51.2% similar) Dayton model 1LNH2 dc gear motor 50 rpm 1/9 0 hp 12VDC AMPS50 RPM10 in lb ref: condition is new...(February 5th, 2019)
• 1lpp4 Dayton Hp Rpm Ac Parallel Shaft Split Phase Gear Motor (37.4% similar) 6 amps, 115 volts , 60HZ. Load torque 400 inch pounds over hung 190LBROTATION reversible keyed shaft x motor has 4 non threaded bolt holes on face of that can be tapped out for 3/8 bolts stainless not recommended one year manufacture WARRANTY115VAC split-phase parallel-shaft gear motor enclosure: ...(August 15th, 2018)
• 1lpy6 Dayton Model Gear Motor 663001411253 (42.7% similar) Over hung pounds one year manufacture warranty for manufacturing defects Dayton model 1LPY6 the following motors are available this series of gear old lbs no cod's. 63 amps, volts 50 60HZ. Amps 1LPY6 1L570 1 rpm, 15HP 3000 full load torque in. All ratings listed for 115V, 60HZ adaptable to 5X400 ...(July 10th, 2017)
• 1lra4 Dayton Electric Motor (56.8% similar) 63 insulation class b thermal protection none max degrees c motor type PCs capacitor required included shaft DOA. 3 overhung load 100 lb. Torque gear motor shaft type double orientation right angle rotation cw cc nameplate rpm 3 enclosure totally enclosed non ventilated mounting position all brake ...(April 10th, 2018)
• 1lrb3 Dayton Dc Gear Motor (43.8% similar) Location j2 11 16...(November 21st, 2017)
• 1yaz3bg Dayton Hp Ph Rpm Farm Duty Motor (46% similar) To get a correct and accurate shipping quote your destination, enter country zip postal code information into the calculator. Dayton 1/2 hp 115 230V ph 850 rpm farm duty motor 1YAZ3BG model 1YAZ3BGNEW OTHER1 230V6...(April 30th, 2018)
• 20cl67 Dayton Motor General Purpose Look (34.5% similar) Please serious buyers only. I only ship to us. Offer only includes items shown. Please look at all pics to see actual condition...(November 7th, 2018)