See Product Details

At times, all of the what, when, where, and how of all of the MMP listings, rules, and codes can get complicated. Therefore, the following information is provided to aid in the proper use of the ABB Type MS MMP and all of their capabilities. Be sure to always follow all national and local codes for your specific application.

The typical combination motor starter usually consists of a disconnect, short-circuit protective device, contactor, and overload relay, which operates and protects the motor. A Manual Motor Protector is a manually operated device that proves overload and short-circuit protection for individual motor loads in an All-in-one package.

The ABB Type MS MMPs provide protection against:

• Overload
• Short Circuits
• Phase Failure
• Under voltage

They are UL/CSA Listed as Manual Motor Protectors, providing overload protection in Class 10 or Class 20 and short-circuit protection, for individual motor loads as well as Group Motor applications.

ABB also offers a selection of UL/CSA Listed Self-Protected (Type E) Manual Motor Protectors. These devices eliminate the need for additional Short-Circuit Protection in many applications. The (Type E) Listing also eliminates all NEC/CEC rules for MMPs used in Group Motor applications, while reducing both cost and panel size.

Additionally, the ABB Type MS MMP increases the reliability of applications due to the quick reaction time, switching off the motor within 3ms, under short-circuit conditions that could cause motor damage.

The Type MS MMP provides a reliable, cost-efficient solution for motor protection in many Industrial applications, for example:

Packaging Machines

• Mining
• Saw Mills
• Fresh and Waste Water Treatment
• Conveyor Systems
• Pumps & Pumping Systems
• HVAC

The ABB Type MS MMPs are a wide range of products providing highly efficient motor protection up to 100 Amps. The short circuit breaking capacity of these devices can reach up to 100 kA depending on the MMP type used, without the need for any special upstream protection.

The MMP device-types have been divided into four frame sizes to ease the selection, coordination, and installation in different applications.

• MS116 ranges up to 16 Amps with a width of only 45mm. It is the smallest in the line with an available top mounted Auxiliary that does not add any additional width. The MS116 is a great choice for space saving applications.
• o MS325 ranges up to 25 Amps and has the lowest "energy let through" values in case of a short circuit. The MS325 is ideal for the more demanding application. Available with (Type E)

The MS116 and MS325 can be easily coordinated with the ABB Smissline, Modular power distribution bus system, providing a versatile and flexible means of distributing power to a wide variety of electrical devices. Smissline is excellent for Group Motor Applications and other ABB modular DIN rail products.

• MS45x ranges from 11 – 50 Amps. It is available with all the accessories of the two smaller types, but in two different short-circuit interrupting ranges. It offers overload protection in Class 10 or 20.
• MS49x ranges from 11 – 100 Amps and is our largest MMP. It is available in three model ranges with different Interrupting capacities and Class 10 or 20 overload protection.

The MS45x and the MS49x are your best choice for larger applications, and available with (Type E).

These Manual Motor Protectors are designed to be easily coordinated with various other components from ABB. These components include the A-Line and Miniature contactors as well as our Circuit Breakers and Disconnect Switches. Together with the Manual Motor Protectors MS116, MS325, MS45x, and MS49x these ABB components form coordinated combination starters for a large variety of applications.