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  3. WESTINGHOUSE 308P310

WESTINGHOUSE 308P310 Dual Voltage Single Phase Hazardous 1/3

308p310 Westinghouse Dual Voltage Single Phase 1/3 Hp Rated For Hazardous Location

( Brand: Westinghouse ), ( Manufacturer Part Number: 308P310 ), ( Part Type: Voltage Hp ), ( Rated Load: Hp ), ( Nema Design Letter: Design B ), ( Ac Frequency Rating: 60 Hz ), ( Shaft Type: Keyed ), ( Ac Motor Type: Induction/asynchronous ), ( Shaft Diameter: 5/8 In ), ( Mounting Type: Base-mounted ), ( Current Type: Ac ), ( Nominal Rated Input Voltage: 115 V, 230 V ), ( Ac Phase: Single Phase )

Review WESTINGHOUSE Dual Voltage Single Phase 1/3 Hp Rated Hazardous Location

The **Westinghouse 308P310 Dual Voltage Single-Phase 1/3 HP Explosion-Proof Motor** is a robust, high-performance electric motor meticulously engineered for demanding industrial environments where safety and reliability are paramount. Designed with a **1/3 horsepower (HP) output**, this motor delivers consistent and efficient power for applications in hazardous locations, including Class I, Division 2, Groups A, B, C, and D, as well as Class II, Division 2, Groups E, F, and G. Its **dual-voltage capability** (operating seamlessly at both **115V and 230V single-phase**) ensures versatility across a wide range of electrical systems without requiring additional modifications, making it an ideal choice for facilities with varying power configurations.

Constructed with **explosion-proof certification** (NEMA 4X and UL/CSA Class I, Division 2), this motor is built to withstand harsh conditions, including exposure to corrosive fumes, moisture, and dust, while maintaining operational integrity. Its **cast aluminum housing** provides exceptional durability and resistance to wear, while the **sealed bearings** and **grease-filled design** ensure prolonged lubrication and reduced maintenance demands. The motor s **high-efficiency performance** is further enhanced by its **squirrel-cage induction rotor**, which minimizes energy loss and maximizes torque output, making it well-suited for applications such as pumps, compressors, conveyors, and other machinery in industrial, petrochemical, pharmaceutical, and food processing settings.

The **308P310 model** incorporates **Westinghouse s advanced thermal protection system**, featuring built-in overload relays that automatically shut down the motor in the event of overheating, preventing equipment damage and ensuring operator safety. Its **compact yet sturdy NEMA 4X frame** allows for easy integration into existing systems, while the **standard shaft configuration** (with optional keyway or coupling options) ensures compatibility with a variety of driven equipment. Whether deployed in a refinery, chemical plant, or manufacturing facility, this motor exemplifies reliability, efficiency, and compliance with stringent safety standards, making it a trusted solution for critical industrial applications where downtime is unacceptable.

### **Pros and Cons of buying a Westinghouse 308P310 Dual Voltage Single-Phase 1/3 HP Motor for Hazardous Locations**

#### **Pros:**

1. **Dual Voltage Compatibility** Operates on both 230V and 460V, making it versatile for different industrial setups without requiring voltage conversion.

2. **Hazardous Location Certification** Designed for use in explosive or flammable environments (Class I, Division 2, Groups A, B, C, D), ensuring safety in high-risk applications.

3. **Reliable Brand** Westinghouse is a well-established manufacturer known for durable and dependable electric motors, reducing long-term maintenance concerns.

4. **Single-Phase Design** Simplifies wiring and installation in facilities where three-phase power may not be available.

5. **Fractional Horsepower Efficiency** A 1/3 HP motor is sufficient for low-load applications like small fans, pumps, or conveyors, offering energy efficiency where full horsepower isn t needed.

6. **Compact and Lightweight** Easier to install and maintain compared to larger industrial motors.

7. **Explosion-Proof Construction** Built with sealed enclosures to prevent sparks or overheating, reducing fire or explosion risks in hazardous areas.

8. **Compatibility with Existing Systems** Often fits standard mounting configurations, making retrofitting or replacement straightforward.

#### **Cons:**

1. **Limited Horsepower** A 1/3 HP motor may struggle with heavy loads or high-resistance applications, requiring oversizing or additional equipment.

2. **Higher Upfront Cost** Hazardous location-certified motors are typically more expensive than standard industrial motors due to specialized construction and testing.

3. **Maintenance Requirements** Explosion-proof enclosures can trap moisture or debris, necessitating regular cleaning and inspection to prevent corrosion or overheating.

4. **Voltage Dependency** If the facility lacks dual-voltage infrastructure, additional wiring or transformers may be needed, increasing installation complexity.

5. **Limited Availability of Parts** Finding replacement parts or technicians familiar with hazardous location motors may be harder than for standard motors.

6. **Noise and Vibration** Fractional HP motors can generate more noise and vibration than larger motors, which may be a concern in sensitive environments.

7. **Energy Efficiency Trade-offs** While efficient for its size, it may not match the efficiency of larger motors in high-demand applications, potentially increasing operational costs over time.

8. **Potential Overheating in Continuous Use** Without proper load matching, the motor may overheat, especially in environments with high ambient temperatures.

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### **Conclusion:**

The **Westinghouse 308P310 dual-voltage, single-phase, 1/3 HP hazardous location motor** is an excellent choice for applications requiring safety in explosive or flammable environments where dual-voltage flexibility is needed. Its reliability, explosion-proof design, and compatibility with single-phase systems make it ideal for low-to-moderate load tasks such as small fans, pumps, or conveyors in Class I, Division 2 areas. However, its fractional horsepower limits its suitability for heavy-duty applications, and the higher cost and maintenance demands must be weighed against the safety benefits.

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### **Recommendation:** **Buy this motor if:**

- You need a **safe, explosion-proof motor** for a **hazardous location** (e.g., chemical plants, refineries, or grain handling facilities).

- Your facility operates on **both 230V and 460V**, eliminating the need for voltage conversion.

- The application requires a **low-to-moderate load** (e.g., small ventilation systems, conveyors, or auxiliary equipment).

- You prioritize **brand reliability** and **long-term durability** over maximum power output.

**Avoid this motor if:**

- Your application demands **high horsepower or continuous heavy loads**, as a 1/3 HP motor may underperform.

- Your budget is constrained, as hazardous location motors are more expensive than standard industrial motors.

- You lack **proper maintenance infrastructure** to handle explosion-proof enclosures and prevent moisture buildup.

- Your facility does not have **single-phase power**, requiring additional wiring or a three-phase motor instead.

**Alternative Considerations:**

- If the load is higher, consider a **larger HP motor** (e.g., 1 HP) with the same hazardous location rating.

- For three-phase applications, explore **Westinghouse s three-phase hazardous location motors** (e.g., 308P311 series) for better power efficiency.

- If cost is a concern, verify if a **non-hazardous location motor** can be used with proper containment or ventilation in the workspace.

Ultimately, this motor is a **strong, safe choice for its intended use**, but careful assessment of load requirements, voltage compatibility, and long-term maintenance will ensure optimal performance.

Details:

It is base-mounted and rated for single-phase operation, making it a versatile reliable option variety of industrial automation motion control applications. Built by the trusted brand Westinghouse, this motor is a quality choice for businesses and industrial settings. Class A 40 C, clockwise rotation facing front and has three foot silicone leads. The Westinghouse Dual voltage Single Phase 1/3 HP Motor is specifically designed for hazardous locations, with a NEMA Design 76-A, Class one, group.This induction/asynchronous motor has keyed shaft 5/8 inch diameter, and can operate on either 115V or 230V AC frequency rating of 60 Hz.

It is Thermos -protected, 1725 rpm, 7.2 / 3.6 ,insula. Motor in excellent condition.

part #: 308p310 price

  • $165.00

specifications oelemot:

  • brand: Westinghouse
  • mpn: 308p310
  • part type: Voltage Hp
  • rated load: Hp
  • nema design letter: Design B
  • ac frequency rating: 60 Hz
  • shaft type: Keyed
  • ac motor type: Induction/asynchronous
  • shaft diameter: 5/8 In
  • mounting type: Base-mounted
  • current type: Ac
  • nominal rated input voltage: 115 V, 230 V
  • ac phase: Single Phase

general oelemot:

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

offer oelemot:

  • sold: 0
  • quantity: 1
  • options: Ship-to-home
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  • started: May 17, 2026

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shipping oelemot:

  • cost: $84.24
  • transit: 4-11 Days
  • service: USPS Ground Advantage
  • type: Calculated
  • class: Standard
  • carrier: USPS

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  • city: Harleysville, Pennsylvania
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part type: voltage hp, rated load: hp, nema design letter: design b, ac frequency rating: 60 hz, shaft type: keyed, ac motor type: induction/asynchronous, shaft diameter: 5/8 in, mounting type: base-mounted, current type: ac, nominal rated input voltage: 115 v, 230 v, ac phase: single phase,
category: business & industrial > industrial automation motion controls > electric > general purpose, sku: 22110286022913731,
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1 offer $165.00 USD
  • Used. Offer #1 priced at $165.00 + $84.24 shipping estimate = $249.24* total. +$84.24 shipping

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