ABB MS325-1.0 Manual Motor Starter

Product Overview

The ABB MS325-1.0 is a manual motor starter designed to provide overload, short-circuit, and phase-loss protection for small motors. It also serves as a manual ON/OFF switching device. With an adjustable setting range of 0.63–1.0 A, this model is ideal for low-power motor applications requiring precise protection and compact installation.

Technical Specifications

• Model: MS325-1.0

• Protection Functions: Overload, short-circuit, and phase-loss protection

• Adjustable Current Range: 0.63–1.0 A

• Short-Circuit Breaking Capacity: 100 kA (at 400 V AC with backup protection)

• Rated Insulation Voltage (Ui): 690 V

• Rated Impulse Withstand Voltage (Uimp): 6 kV

• Rated Operational Voltage (Ue): 400 V AC

• Frequency: 50/60 Hz

• Poles: 3-pole

• Operation Mode: Manual toggle ON/OFF

• Mounting Method: DIN rail

• Optional Accessories: Auxiliary contacts, alarm contacts, undervoltage release

• Protection Class: IP20 (front side)

Key Features & Advantages

• Three-in-one protection: Integrated overload, short-circuit, and phase-failure protection.

• High breaking capacity even in a compact body.

• Easy manual operation with toggle switching.

• Accurate adjustments for thermal and magnetic trip settings.

• Modular accessories enable flexible configuration.

• Fast DIN-rail installation reduces panel assembly time.

• Industrial-grade reliability for harsh operating conditions.

Application Fields

• General motor protection

• Pumps, fans, and small compressors

• Machine tools

• Building automation systems

• Conveyors and material handling systems

• Industrial control panels and switchboards

Precautions

• Set the protection current according to the motor’s rated current.

• Verify wiring carefully before power-up.

• Avoid excessive ON/OFF cycling under load.

• Keep the installation area dry and well-ventilated.

• Add optional modules if remote monitoring or interlocking is required.

• Ensure the equipment is powered off before maintenance.