SD661 Motor – 1 to 75 HP, IP56, Inverter Duty, Hazardous Location Rated

Product Details

Quantity

100
Availability (Lead Time)

4-6 Weeks
Product Location

United States
Condition

New
Equipment code

CFIHOS-30000340

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Short Description

The SD661 Motor delivers 1–75 HP of rugged performance, with IP56 ingress protection, Inpro/Seal® bearing isolators, and hazardous location compliance. Designed for low-vibration operation and inverter duty performance in demanding industrial environments.

Description

SD661 Motor – 1 to 75 HP, IP56, Inverter Duty, Hazardous Location Rated

The SD661 Motor is a robust industrial-grade motor engineered to perform reliably in the most demanding environments. With a horsepower range of 1 to 75 HP (0.75 to 56 kW) and available in NEMA frame sizes 184 to 365, this motor accommodates a wide range of power and application requirements. Its IP56 rating ensures effective protection against dust and high-pressure water ingress, making it ideal for harsh field conditions.

Built for hazardous locations, the SD661 complies with Class I, Division 2 and Class II, Division 2 standards, supporting operations in explosive or dusty environments. It features Inpro/Seal® bearing isolators on both ends, offering advanced protection against contaminants, while automatic grease relief fittings help maintain optimal lubrication and prevent over-greasing.

The motor’s rugged cast iron frame and diagonally split oversized terminal box allow for easy wiring and long-term mechanical integrity. An epoxy paint finish and stainless steel nameplate provide additional protection against corrosion, ensuring a long operational life even in corrosive environments.

Internally, the motor includes Class F insulation with a NEMA Class B temperature rise, ensuring thermal stability under continuous duty. It is inverter duty rated per NEMA MG1 Part 31, supporting 20:1 variable torque and 4:1 constant torque (140–360 frame, 4 & 6 pole), and 4:1 constant torque on other configurations. Operating at 0.06 IPS vibration, the SD661 ensures smooth, quiet performance with minimal wear.

This motor is ideal for industries including chemical processing, oil and gas, wastewater, and material handling where performance, durability, and safety are paramount.

Specifications:

– Motor Type: Severe Duty Three-Phase Electric Motor
– Horsepower Range: 1 – 75 HP (0.75 – 56 kW)
– NEMA Frame Sizes: 184 – 365
– Voltage Options: 460 V and 575 V
– Frequency: 60 Hz
– Pole Configurations: 4 and 6 pole
– Enclosure: Totally Enclosed Fan Cooled (TEFC)
– Ingress Protection: IP56
– Construction: Cast iron frame, epoxy-coated
– Terminal Box: Oversized, diagonally split for ease of access
– Hazardous Location Ratings:
• Class I, Division 2
• Class II, Division 2
– Bearings: Inpro/Seal® isolators on both ends with automatic grease relief
– Insulation Class: Class F
– Temperature Rise: NEMA Class B
– Vibration: ≤ 0.06 IPS
– Inverter Duty:
• NEMA MG1 Part 31 compliant
• 20:1 Variable Torque & 4:1 Constant Torque (140–360 frame, 4 & 6 pole)
• 4:1 Constant Torque (other configurations)
– Mounting Configuration: Foot-mounted
– Nameplate: Stainless steel
– Applications: Oil & Gas, Wastewater, Chemical, Mining, Industrial Machinery

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Technical Details

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