LIMA® MAC generators

Lima Mac Banner

Performance, reliability, and simplicity describe the LIMA® MAC line of generators from Marathon Electric. Ruggedly designed for superior motor starting capability, LIMA® MAC generators provide dependable electrical power with inherent safety features to handle even the most severe applications and environments.

Designed for 1 hp/kW, 3 phase, Code G motor starting capability, the LIMA® MAC generator is self-regulated and self-excited, providing maximum reliability without external voltage regulation, adjustments, or electronic controls . . . a "hands off" generator supplying simplicity with minimum maintenance for any application.

For consistent electrical power, longer system life, and lasting value, specify the LIMA® MAC line of generators from 5 to 300 kW. Wherever dependability counts most, LIMA® MAC generators deliver quality performance and product support unequaled in the industry.

Consider the Benefits LIMA® MAC Generators Offer You . . .

Choice. Brushless single phase and three phase designs from 5 to 300 kW. All generators are 4-pole, 1800 rpm designs.

Maximum Performance.

  • 1 hp/kW, 3 phase, Code G motor starting capability
  • Inherent volts/hertz characteristic, providing automatic protection from engine underspeed
  • Self-regulated for "hands off" operation
  • Inherent 3 phase short circuit support
  • Transient voltage dip not more than 10% with one-step application of full, continuous duty rated load at rated power factor.
  • 4% voltage regulation at governed synchronous speed.

Rugged Construction Main and Exciter Rotor. Stator windings are Class F insulated with multiple dips and bakes of non-hygroscopic varnish for protection against harsh environments. Ratings are based upon NEMA Class B temperature rise for maximum generator life. Stator windings are a solid, moisture resistant type with superior physical and dielectric strength.

Brushless Exciter. At the heart of the LIMA® MAC generator is a patented brushless excitation system. This excitation system is a 3 phase, rotating current transformer/frequency converter which responds to load changes and maintains output voltage within 4%. The 3 phase, full wave rectification provides a resulting low ripple (smoother) DC source to consistently excite the main field.

Salient Pole Rotor Assembly. The LIMA® MAC main rotor utilizes a single piece, 4-pole lamination for maximum mechanical strength. Field windings are "wet wound" with enameled magnet wire in Class H thermosetting epoxy for high electrical integrity and designed to withstand overspeed of 125% of rated rpm for 15 minutes without damage.

Permanently Lubricated Bearings. Bearings are single width, double shielded type ball bearings pre-lubricated for the life of the bearing and sized for a minimum B-10 life of 100,000 hours. Shafts are precision ground and the bearing carrier is cast iron with bearing outboard the exciter rotor.

Cast Aluminum Alloy Ventilating Fan. Bidirectional high efficiency fan and internal air flow patterns maximize heat transfer and minimize hot spot differentials for longer winding life.

Fully Guarded for Operator Safety. No exposed laminations or live parts. NEMA weather-protected Type 1 enclosure provides protection from environmental conditions and maximum operator safety. All LIMA® MAC generators are manufactured to applicable NEMA, IEEE, and CSA standards.

Motor Starting Application Leader. LIMA® MAC generators provide field-proven motor application superiority on container refrigeration, center pivot irrigation systems, aggregate processing plants, sewage lift stations, and submersible pump applications. Additionally, they continue to be specified for general purpose power supply in rental fleets, on construction sites, and in light tower installations.

LIMA® MAC generators are utilized worldwide whenever reliability, performance, and simplicity in design are required. Simple to install and operate . . . LIMA® MAC . . . the only design of its kind in the marketplace.


This name is used, please enter another
{0} was created successfully.
{0} was deleted successfully.
New password and confirm password do not match.
The password entered does not comply with our password policy. Please try again.
The password entered does not comply with our password policy. Please try again.
You have already access to entered account.
Account already added
Please select an account
The entered account number is not valid or the account is not yet transitioned for use at
You must provide a valid account number to be added. Please contact your Sales Representative or Account Administrator if you don’t know your Account Number.
Please select Additional Access checkbox.
Please enter your address.
Please enter your address cont.
Please check to agree with Terms of Use and Privacy Policy.
Please enter your city.
Please enter your company name.
Please enter confirm password.
Please select your country.
Please enter a valid format for your email address.
Email address required
Please enter your email address.
Please enter your first name.
Please review and select a warehouse for Catalog/Part Numbers: {0}
Please enter your job title.
Please enter your last name.
The current password entered does not match your password or new password is the same like one of the previous or password changed last 30 days.
Profile updated successfully.
Error while request access.
Registration Information has been received.   Thank you for your interest in Regal Rexnord.
Please enter new password.
Please enter old password.
Please enter a valid format for your phone number.
Please enter your phone number.
Please enter a valid format for your extension.
Please select at least one product category.
Please verify you are not a robot.
Registration Information has been received.   Thank you for your interest in Regal Rexnord.
You must provide the name of a Regal Rexnord employee who can confirm your need for access to Genteq technical documents.
Please select your state.
This email is already in use. Please log in.
You do not have permission to access this page.
Confirmation code has been sent successfully to your new email address. Please enter the Confirmation code and update the profile.
Email Address has been changed successfully. Please check your email for information to login again.
Verification code required
Please enter your zip code.
Your session has timed out. You must log in again to access secure content. Any work on the current page will be lost.
Your shopping cart qualifies for free shipping.
Minimum order quantity is {0} {1}. Please enter a valid quantity for item: {2} .
Item must be ordered in multiples of {0} {1}. Please enter a valid quantity for item: {2} .
Add {0} more to your cart to qualify for free shipping.
Item {1} has been removed from cart.
Add {0} more to qualify for free shipping.
This item is discontinued, but you may order against the remaining inventory. You have requested {4} items of the total remaining quantity of {2}.
The following item(s) have been added to your cart: {0}
Request of quotes should allow items in same segment
Uploaded file is not supported, File upload supports word, excel and pdf.
File too Big, please select a file less than 20mb
The item you have entered have no business segment.
The item {1} allow maximum {0} quantity.
The item {1} requires a minimum of {0} quantity.
Please enter Required Specifications.
Error submitting request.
Your request has been submitted successfully.
Please enter valid product.
The item {1} must be in multiples of {0} quantity.
The {0} you have entered was not found. Please revise.
File size requires longer download time
File is not found. Please try again or contact customer service.
Sorry, at this time this product does not comply with the standards of the country you selected.
This product complies with the standards of the country you selected.
The account you are currently on does not have access to purchase this product. Please change to your {0} account to purchase.
The following item(s) have been moved to {0}: {1}
Quantities over {0} may require additional lead time. A Regal representative will contact you if this occurs.
You can only order in multiples of {0}. Please enter a valid quantity for this item.
You have no products selected for comparison. Please select at least two products to compare using the 'Add to Compare' checkbox found on product list pages or product detail pages.
Sorry, this item is no longer available.
Available warehouses not found.
The item requires a minimum order of {0} pieces.
The item requires a minimum order of {0} {1}.
The item must be ordered in multiplies of {0} pieces.
The item must be ordered in multiples of {0} {1}.