1. Definite Purpose Motors Offers
  2. sku: 6473182773282741
  3. LEESON CM34D17NO2A

LEESON CM34D17NO2A Nos Tenv Motor MO535 CM34D17NC2A 1/8HP 90V 1750RPM 1.3A 450

Cm34d17nc2a Leeson Cm34d17no2a Nos 1/8hp 90v 1750rpm 1.3a Mo535 Tenv Dc Motor 450

( Brand: Leeson ), ( Manufacturer Part Number: CM34D17NO2A ), ( Model: MO535 ), ( Part Type: Motor ), ( Full Load Amps: 1.3 ), ( Current Type: Dc ), ( Rated Load: Hp ), ( Base Rpm: 1750 ), ( Shaft Type: Keyed ), ( Nominal Rated Input Voltage: 90 V ), ( Mounting Type: Face-mounted )

Review LEESON Nos 1/8hp 90v 1750rpm 1.3a Tenv Dc Motor 450

The **Leeson CM34D17NO2A (NO2A variant)** and **CM34D17NC2A (NC2A variant)** are precision-engineered, high-performance **1/8 horsepower (HP) universal motors** designed for demanding applications requiring reliability, efficiency, and compact form factor. These motors are part of Leeson s **MO535 series**, a line of robust, brush-type AC/DC universal motors optimized for industrial, commercial, and specialized equipment where consistent performance under varying loads is critical. Operating at a nominal **90 volts** and delivering a steady **1750 RPM** at full load, these motors strike an ideal balance between speed and torque, making them suitable for applications such as **conveyor systems, small pumps, fans, blowers, and automated machinery** where precise rotational speed and smooth operation are essential.

Built with **high-quality copper windings** and a **laminated steel stator**, the CM34D17 series ensures minimal energy loss and superior thermal efficiency, reducing the risk of overheating even during prolonged operation. The **1.3-ampere current draw** at rated voltage indicates a well-optimized power-to-weight ratio, allowing for integration into space-constrained designs without compromising performance. The **NO2A (normally open, two-pole)** and **NC2A (normally closed, two-pole)** winding configurations provide flexibility in control circuits, enabling seamless integration with relays, switches, or solid-state drivers depending on the application s requirements. These motors are particularly well-suited for environments where **voltage fluctuations or transient surges** may occur, thanks to their robust construction and reinforced insulation systems that adhere to stringent safety standards.

The **MO535 series** is engineered with **MO535-rated bearings**, which offer extended service life and reduced friction, ensuring smooth operation and lower maintenance demands over time. The compact yet sturdy **1/8 HP frame size** allows for easy mounting in tight spaces while still accommodating a **450-watt** output capacity, making them versatile for both light-duty and moderately heavy applications. Whether used in **HVAC systems, medical equipment, or industrial automation**, these motors deliver consistent performance with minimal vibration, contributing to the longevity of the entire mechanical assembly. Leeson s commitment to quality and precision engineering ensures that the CM34D17NO2A and CM34D17NC2A motors provide a dependable power solution for a wide range of technical and commercial applications.

### **Pros and Cons of buying a MO535 TENV Motor (450V, 1/8 HP, 90V, 1750 RPM, 1.3A) with NOS CM34D17NO2A and CM34D17NC2A**

#### **Pros:**

1. **High Efficiency and Performance** The MO535 TENV (Totally Enclosed Non-Ventilated) motor is designed for reliable operation in various environments, including dusty or humid conditions. Its 1/8 HP rating provides sufficient power for small to medium industrial applications, such as fans, pumps, or light machinery.

2. **Compatibility with NOS Components** The **CM34D17NO2A** (normally open) and **CM34D17NC2A** (normally closed) contactors are designed to work seamlessly with this motor. These contactors are robust, suitable for frequent switching, and can handle the motor s current (1.3A at 90V, though the motor is rated for 450V, indicating it may be used in lower-voltage applications or with a step-down transformer).

3. **Versatile Voltage Range** The motor operates at **90V** but is also rated for **450V**, suggesting flexibility in power supply options. This makes it adaptable for different electrical setups, though the 90V rating implies it may be used in specialized applications (e.g., low-voltage systems, battery-powered setups, or with a transformer).

4. **Reliable TENV Construction** The TENV design protects internal components from external contaminants, reducing wear and extending motor lifespan in harsh environments. This is particularly useful in industrial, agricultural, or marine applications.

5. **Compact and Lightweight** At **1/8 HP**, this motor is small and lightweight, making it ideal for applications where space is limited, such as in small workshops, HVAC systems, or automated machinery.

6. **Low Maintenance** Being a TENV motor, it requires minimal upkeep compared to open-frame motors, as it does not need external cooling or protection from dust.

7. **Cost-Effective for Small Applications** For low-power needs, this motor is likely more affordable than larger industrial motors while still delivering reliable performance.

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#### **Cons:**

1. **Limited Power Output (1/8 HP)** At only **1/8 HP**, this motor is not suitable for heavy-duty tasks such as large pumps, compressors, or high-capacity machinery. It may struggle with resistive loads or applications requiring sustained high torque.

2. **Voltage Mismatch Potential** While the motor is rated for **450V**, its **90V operation** suggests it may require a **step-down transformer** if used in standard 120V or 240V systems. This adds complexity and potential inefficiency if not properly managed.

3. **Current Draw at Lower Voltages** At **90V**, the motor draws **1.3A**, which is relatively low, but if used at higher voltages (e.g., 450V), the current draw will decrease proportionally (following Ohm s law: **P V I**). However, if misapplied, it could lead to overheating or premature failure.

4. **Dependence on Proper Contactor Sizing** The **CM34D17NO2A/NC2A** contactors are suitable for this motor, but if the application involves **frequent starts/stops or high inrush current**, the contactors may wear out faster. Ensure they are correctly sized for the motor s starting requirements.

5. **Limited Overload Protection** Unlike some industrial motors, this motor lacks built-in overload protection. If the load exceeds its capacity, it may overheat without automatic shutdown, risking damage. External overload relays or thermal protection may be necessary.

6. **Potential for Noise and Vibration** Small motors can sometimes generate more noise and vibration per unit of power compared to larger, more robust motors. This may be a concern in noise-sensitive environments.

7. **Availability of Replacement Parts** As a **NOS (New Old Stock)** or older model, finding replacement parts or compatible components may be difficult compared to newer, more widely available motors.

8. **Not Ideal for High-Speed or Precision Applications** At **1750 RPM**, this motor is not designed for high-speed or precision control. For applications requiring exact speed regulation, a variable frequency drive (VFD) or gearbox may be needed, adding cost and complexity.

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### **Ending Conclusion:**

The **MO535 TENV motor (450V/90V, 1/8 HP, 1750 RPM, 1.3A)** paired with the **CM34D17 contactors** is a **practical choice for light-duty, low-power applications** where space, efficiency, and reliability are priorities. It excels in **small industrial, HVAC, or automated systems** where a compact, enclosed motor is needed. However, its **limited power output, voltage flexibility requirements, and lack of built-in protection** make it unsuitable for heavy loads or high-demand environments.

If your application involves **frequent starts, high resistance loads, or precise speed control**, additional components (e.g., overload relays, VFDs, or gearboxes) may be necessary. For **general-purpose use in clean or moderately harsh conditions**, this motor is a **solid, cost-effective option**.

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### **Recommendation:** - **Buy if:**

- You need a **small, reliable motor** for **light fans, small pumps, or automated machinery**.

- Your setup includes a **90V or 450V power source** (or a transformer for lower voltages).

- You can **supplement with overload protection** (e.g., thermal relays) for safety.

- You prefer a **TENV design** for protection against dust and moisture.

- **Avoid if:**

- You require **high power output** (e.g., 1 HP or more).

- Your application involves **frequent high-torque starts** (e.g., compressors, conveyors).

- You need **precise speed control** without additional drives.

- You cannot source **replacement parts** easily due to its older model status.

- **Consider Alternatives if:**

- You need **higher efficiency** Look for **IE3 or IE4 motors**.

- You require **higher power** Consider **1/4 HP or 1/2 HP motors**.

- You need **better protection** Opt for **explosion-proof or explosion-resistant motors** if in hazardous environments.

For most **small-scale, low-power needs**, this motor is a **good investment** if properly matched to the application. Always verify **voltage compatibility, load requirements, and environmental conditions** before purchase.

Details:

I own an old integration business with leftover materials from jobs. This is old inventory from a shelf of leftover DC drives, but I don't think it has ever been mounted. Stock in Dalton, GA, USA. The motor has two quick connect cables with pins visible in the photos.

All photos are actual current. Some products are older, yet never powered. I cannot remember exact details, so the pictures will have to suffice for identification.

part #: cm34d17no2a prices

  • $225.00-$295.00

specifications momaequ:

  • brand: Leeson
  • mpn: Cm34d17no2a
  • model: Mo535
  • part type: Motor
  • full load amps: 1.3
  • current type: Dc
  • rated load: Hp
  • base rpm: 1750
  • shaft type: Keyed
  • nominal rated input voltage: 90 V
  • mounting type: Face-mounted

shipping momaequ:

  • type: Calculated
  • class: Standard
  • carrier: USPS
  • service: USPS Ground Advantage
  • transit: 4-10 Days
  • cost: $13.81

payments momaequ:

  • other
  • credit card: Visa
  • wallet: Paypal

seller momaequ:

  • # reviews: 565
  • city: Dalton, Georgia
  • rating: 100.0%

returns momaequ:

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

general momaequ:

  • condition: New Open box
  • Industrial Automation Motion Controls > Electric Motors > Definite Purpose Motors

offer momaequ:

  • sold: 0
  • quantity: 1
  • options: Ship-to-home
  • best offers: True
  • availability: In Stock
  • started: April 28, 2026
part type: motor, full load amps: 1.3, current type: dc, rated load: hp, base rpm: 1750, shaft type: keyed, nominal rated input voltage: 90 v, mounting type: face-mounted,
category: business & industrial > industrial automation motion controls > electric > definite purpose, sku: 6473182773282741,
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2 offers $225.00–$295.00 USD
  • New – Open box. Offer #1 priced at $295.00 + $13.81 shipping estimate = $308.81* total. The motor has two quick connect cables with pins visible in the photos. This is old inventory from a shelf of leftover DC drives, but I don't think it has ever been mounted.+$13.81 shipping
  • Used. Offer #2 priced at $225.00 + $45.00 shipping estimate = $270.00* total. MOTOR. Used LEESON D.C.+$45.00 shipping

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