ey Technical Parameters
General & Electrical Ratings
Product / Model: ABB MS116‑20 Manual Motor Starter
Series: MS116
Rated Operational Current (Ie): 16 – 20 A (adjustable)
Number of Poles: 3 (three‑pole)
Rated Operational Voltage: Up to 690 V AC
Rated Short‑Circuit Breaking Capacity (Icu): ~16 kA at 400 V AC
Rated Service Breaking Capacity (Ics): ~10 kA at 230/400 V AC
Overload Trip Setting Range: 16–20 A (adjustable)
Undelayed Short‑Circuit Setting: ~300 A
Motor & Power Ratings
AC‑3 Rated Operational Power (Pe): ~7.5 kW at 230 V and 400 V AC
Typical Motor Ratings:
~5 HP at 220–240 V AC
~10 HP at 440–480 V AC
~15 HP at 500–600 V AC
Protection Features
Thermal Overload Protection: Yes (adjustable)
Phase Failure / Loss Sensitivity: Yes
Disconnect Switch Function: Yes
Trip‑Free Mechanism: Yes
Temperature Compensation: Yes
Mechanical & Physical
Actuator: Rotary handle with ON/OFF/TRIP positions
Width: ~45 mm
Height: ~97.8 mm
Depth: ~85 mm
Weight: ~0.31 kg
Degree of Protection: IP20 (housing)
Operating Temperature: –25 °C to +70 °C
Mounting: DIN‑rail or panel mount compatible
Typical Applications
Motor control and protection in industrial panels
Manual motor switching (start/stop)
Overload and short‑circuit protection without external fuses
Phase failure sensitive applications
The ABB MS116‑20 is a manual motor starter / motor protection breaker designed to provide manual ON/OFF control and motor protection in industrial and commercial electrical systems. It combines a disconnect switch with overload, short‑circuit, and phase‑failure protection to safeguard motors and loads without the need for external fuses. The device has a trip‑free rotary handle with clear ON/OFF/TRIP indication and adjustable overload current setting to match the motor’s full‑load current within the 16–20 A range. It is suitable for both three‑phase and single‑phase applications and mounts on DIN rails or panel surfaces