Technical Specifications
Parameter Specification
Product Manual Motor Starter
Model / Part Number MS325‑16
Rated Operational Current (Ie) 16 A
Setting Range (Overload Protection) 12.5 – 16 A
Number of Poles 3 poles
Rated Operational Voltage (Ue) up to 690 V AC and 440 V DC
Rated Service Short‑Circuit Breaking Capacity (Ics) 100 kA at 230 V AC, 60 kA at 400 V AC, 40 kA at 440 V AC, 25 kA at 500 V AC, 4 kA at 690 V AC
Rated Ultimate Short‑Circuit Breaking Capacity (Icu) Same as Ics
Rated Instantaneous Short‑Circuit Current Setting (Ii) 240 A
Rated Operational Power AC‑3 ~7.5 kW (400 V AC)
Trip Class Class 10A
Control / Handle Rotary ON/OFF handle with clear indication
Functions Manual switching, overload protection, short‑circuit protection
Disconnect Function Built‑in
Temperature Compensation Yes
Trip‑Free Mechanism Yes
Poles in Series for Single‑Phase 3 poles can be used in series
Auxiliary / Accessory Options Auxiliary contacts, signalling contacts, undervoltage release, shunt trip (optional)
Enclosure Protection IP20
Operating Temperature Range –25 °C to +50 °C (typical)
Mechanical Durability High cycle life (thousands of operations)
Dimension (approx.) Width: 54 mm, Height: 87.5 mm, Depth: 75.5 mm
Standards Compliance IEC/EN 60947‑4‑1 / IEC/EN 60947‑1 series
The ABB MS325‑16 Manual Motor Starter is a three‑pole motor protection device that combines manual ON/OFF switching with overload and short‑circuit protection for electric motors. It is designed to protect motors without the need for external fuses, saving space and cost while ensuring rapid disconnection when abnormal conditions occur. This compact and robust starter includes a rotary handle for clear switch position indication and is suitable for use in both single‑phase and three‑phase applications in industrial and commercial environments. The device also offers built‑in disconnect capability and adjustable current settings to match motor full‑load current requirements.