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Siemens MS125A Motor Starter - Manual Motor Protection

Siemens MS125A manual motor starter with adjustable thermal and magnetic trip, 125A.

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ManufacturerSiemens

Part numberMS125A

Type Manual Motor Starter

Manufacturer Siemens

Part Number MS125A

Current Rating 125A

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Adjustable Thermal Overload Magnetic Trip Protection 125A Current Rating Manual Reset 3-Pole Configuration Industrial Grade

Product description

The Siemens MS125A is a manual motor starter designed for reliable motor protection. It incorporates adjustable thermal overload and magnetic trip functions to safeguard motors against overcurrent and short circuits. With a robust 125A rating, it is suitable for a wide range of industrial motor applications.

This motor starter is ideal for use in direct-on-line (DOL) starting configurations, providing essential protection for motors in machinery, pumps, fans, and conveyor systems across various industries including manufacturing, processing, and utilities.

Stanlo Automation, a veteran-owned distributor specializing in surplus automation parts, offers the Siemens MS125A. We ensure our customers receive high-quality, tested components at competitive prices, supporting your automation needs with efficiency and reliability.

Technical specifications

Type	Manual Motor Starter
Manufacturer	Siemens
Part Number	MS125A
Current Rating	125A
Trip Type	Thermal Overload & Magnetic
Poles	3
Application	Motor Protection

Common applications

Motor Control Panels

Pump Systems

Fan Control

Conveyor Systems

Industrial Machinery

Manufacturing Equipment

Compatible systems

3-phase industrial motors Standard control panels DOL starter configurations

Also known as

Siemens MS125A starter

Replaces / compatible with

This starter replaces older Siemens manual motor starters in the MS series or can be used in new installations requiring robust motor protection up to 125A. Compatible with standard mounting and wiring practices.

Technical note

Expert tip

Ensure the thermal overload setting is correctly calibrated to the motor's full load current (FLC) to prevent nuisance tripping or inadequate protection.

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Frequently asked questions

What protection features does the Siemens MS125A manual motor starter offer?

The Siemens MS125A manual motor starter provides protection against overloads and short circuits through its adjustable thermal overload and magnetic trip mechanisms. It is designed for 3-pole operation up to 125A.