Motor starter MS116-4A 1SAM250000R1008

Motor starter for reliable motor protection

The MS116-4A motor starter is a reliable device designed to protect three-phase motors from overload and short circuit. It provides effective circuit protection, and its compact design makes it easy to install in switchboards. It is a key element of any electrical installation powering motors, guaranteeing their safe and long-lasting operation.

Functionality and application

The MS116-4A starter allows adjustment of the overload release setting range from 2.5 to 4A, making it suitable for a wide range of applications requiring precise protection. It is designed for controlling and protecting motors up to 1.5 kW at 400V AC-3. Thanks to its phase failure sensitivity, it also protects against voltage asymmetries that can lead to motor damage. The thermal-magnetic release method ensures a quick response to sudden current changes, minimizing the risk of failure.

• Overload protection: The starter reacts to prolonged motor loading, preventing overheating and winding damage.
• Short-circuit protection: Fast circuit disconnection in the event of a short circuit minimizes the risk of fire and damage to other installation elements.
• Phase failure sensitivity: Provides additional safety by detecting the absence of one of the supply phases, which can lead to serious motor problems.
• Current adjustment: The ability to adjust the overload release setting range allows you to adapt the level of protection to the specific motor and application.
• DIN rail mounting: Enables easy and quick mounting in standard electrical switchboards.

Technical characteristics and construction

The MS116-4A is characterized by a solid construction and high quality workmanship. The rated short-circuit breaking capacity Icu is 75 kA at 400V AC, which guarantees effective disconnection of the circuit in the event of a short circuit with high energy. The connection of the main contacts is made using screw connections, ensuring a secure and durable connection of the wires. The device has three poles and is adapted to operate at a rated operating voltage of 690 to 690 V and a rated continuous current Iu equal to 4 A. Power losses are 5.4 W, which translates to efficient use of electrical energy. The IP20 degree of protection provides protection against accidental contact and against the ingress of solid objects larger than 12.5 mm.