Motor starter MS116-25A 1SAM250000R1014

Motor Starter – Reliable Protection for Your Drives

This three-pole motor starter MS116-25A is a compact and efficient solution for protecting motors up to 11 kW (at 400 V). Designed for both professional installers and end-users, it provides effective protection against overloads and short circuits, minimizing the risk of damage and downtime. This starter is characterized by a solid construction and easy installation, which translates into time and cost savings.

Functionality and Application

The MS116-25A starter finds wide application in electrical installations powering three-phase motors. Its main task is to protect the motor against the effects of overloads, short circuits, and phase failures. This ensures safe and reliable operation of the equipment. The starter's thermal-magnetic mechanism reacts to both the temperature increase caused by overload and the sudden current increase in the event of a short circuit. Thermal protection allows reaction in case of prolonged load, and magnetic – immediate disconnection in case of a short circuit. This combination guarantees comprehensive motor protection.

• Applications:
  • Motor protection in industrial machines and equipment
  • Electrical installations in commercial and industrial buildings
  • Powering pumps, fans, conveyors and other motor-driven devices
  • Motor control systems
• Key features:
  • Rated continuous current (Iu): 25 A – ideal for applications requiring stable power supply.
  • Rated short-circuit breaking capacity (Icu): 16 kA at 400 V AC – a high value guarantees effective disconnection in the event of a short circuit.
  • Overload release setting range: 20-25 A – allows precise adjustment to the load characteristics.
  • Phase failure sensitivity – additional protection protecting the motor against damage caused by the lack of one of the supply phases.
  • Screw connection of main contacts – ensures a secure and durable connection of wires.
  • Degree of protection IP20 – protection against contact with fingers and against the ingress of solid objects with a diameter greater than 12.5 mm.

Construction and Mounting

The MS116-25A starter is characterized by compact dimensions (45 mm width, 97.8 mm height and 85.4 mm depth), which facilitates its installation even in tight spaces. The device is made of high-quality materials, which ensures its durability and reliability. Mounting is done by screwing it onto a busbar or directly to the housing using screws. The knob allows easy setting of the release parameters and manual switching on/off of the starter. Power losses are 8.4 W, which affects the energy efficiency of the installation.