ABB MS116-4.0 1SAM250000R1008 MS116 Manual Motor Starter 2.5-4.0A

The ABB MS116-4.0 (article 1SAM250000R1008) is a compact 45 mm wide manual motor starter that switches motors on and off and guards them against short-circuits, overload, and phase failures without requiring an external fuse. Its current setting range of 2.5 to 4.0 A and a rated service short-circuit breaking capacity of Ics = 50 kA at 400 VAC make it a capable solution for motor branch circuit protection in control panels and machinery.

Technical specifications:

• Series: MS116-4.0
• ABB article number: 1SAM250000R1008
• EAN: 4013614320316
• Current setting range: 2.5 to 4.0 A
• Rated operational current (Ie): 4.0 A
• Rated service short-circuit breaking capacity (Ics): 50 kA at 400 VAC
• Trip class: 10A
• Device width: 45 mm
• Suitable for three-phase and single-phase applications

Features and benefits:

• Fuse-free protection against short-circuits, overload, and phase failures in a single compact device, eliminating the need for a separate fuse element
• Built-in disconnect function allows safe isolation of the motor circuit without additional disconnecting components
• Trip-free mechanism prevents the device from being held in the on position during a fault, ensuring reliable disconnection
• Temperature compensation keeps tripping characteristics accurate across varying ambient temperatures
• Rotary handle with clear switch position indication provides unambiguous on/off status at a glance

Applications:

• Direct-on-line starting and protection of small three-phase motors in industrial machinery
• Single-phase motor control and protection in pumps, fans, and light-duty equipment
• Motor feeder circuits in control panels and distribution boards
• Installations requiring compact, fuse-free motor protection with built-in isolation

Also known as: ABB MS116-4.0, MS116-4.0 1SAM250000R1008, manual motor starter, motor protection circuit breaker, manual motor protector.