ABB MS325 Manual Motor Starter

SKU MS325

In stock

12-month warranty
Free returns within 30 days

Manufacturer: ABB
Product No.: MS325
Country of origin:Sweden
Product Type: Manual Motor Starter
Barcode: 85371091
Payment: T/T, Western Union
Weight: 500g
Dimensions: 54 mm x 87.5 mm x 70 mm (W x H x D)
Shipping port: Xiamen
Warranty: 12 months

ABB MS325 manual motor starters (also known as motor protection circuit breakers or manual motor protectors) are electromechanical protection devices for the main circuit mainly used to switch motors manually ON/OFF and protect them fuseless against short-circuits, overloads, and phase failures. The MS325 series provides fuseless protection that saves costs and space while ensuring rapid response during short-circuit conditions by switching off the motor within milliseconds. These three-pole protection devices utilize thermal tripping elements for overload protection and electromagnetic tripping elements for short-circuit protection, alongside a disconnect function for safe isolation of the installation and supply.

Features

Overload protection with trip class 10A
Phase loss sensitivity for motor main circuit protection
Disconnect function for safe isolation of installation and supply
Temperature compensation from -25 degC to +50 degC
Adjustable current setting with a direct reading scale in amperes
Suitable for both three-phase and single-phase applications
Integrated trip-free mechanism
Clear switch position indication (ON/OFF)

Applications

Manual motor switching and primary circuit protection
Fuseless motor starter combinations with contactors
Single-phase and three-phase AC motor installations
Industrial motor disconnect and group installation setups

Ordering Information

Setting Range (A)	Type	Order Code	Weight (1 pce) (kg)
0.10...0.16	MS325-0.16	1SAM150000R1001	0.310
0.16...0.25	MS325-0.25	1SAM150000R1002	0.310
0.25...0.40	MS325-0.4	1SAM150000R1003	0.310
0.40...0.63	MS325-0.63	1SAM150000R1004	0.310
0.63...1.00	MS325-1	1SAM150000R1005	0.340
1.00...1.60	MS325-1.6	1SAM150000R1006	0.370
1.60...2.50	MS325-2.5	1SAM150000R1007	0.370
2.50...4.00	MS325-4	1SAM150000R1008	0.370
4.00...6.30	MS325-6.3	1SAM150000R1009	0.370
6.30...9.0	MS325-9	1SAM150000R1010	0.370
9.00...12.5	MS325-12.5	1SAM150000R1011	0.370
12.5...16.0	MS325-16	1SAM150000R1012	0.370
16.0...20.0	MS325-20	1SAM150000R1013	0.370
20.0...25.0	MS325-25	1SAM150000R1014	0.370

Technical Specifications

Category	Specification	Value
Electrical	Rated Operational Voltage Ue	690 V AC, 440 V DC
	Rated Operational Frequency	DC, 50/60 Hz
	Number of Poles	3
	Trip Class	10A
	Utilization Category	A
	Rated Impulse Withstand Voltage Uimp	6 kV
	Rated Insulation Voltage Ui	690 V
	Pollution Degree	3
	Mechanical Durability	100 000 operations
	Electrical Durability	50 000 operations
	Duty Time	100%
	Maximum Operating Frequency	170 cycles/h
Environmental	Ambient Air Temperature (Operation)	-25... +50 degC
	Ambient Air Temperature (Storage)	-50... +80 degC
	Vibration (Sinusoidal) acc. to IEC/EN 60068-2-6	5g / 10... 150 Hz
	Shock (Half-sine) acc. to IEC/EN 60068-2-27	15g / 11 ms
	Maximum Operating Altitude	2000 m
Mechanical	Dimensions (W x H x D)	54 mm x 87.5 mm x 70 mm (2.13 in x 3.44 in x 2.76 in)
	Weight	0.310 kg ... 0.370 kg depending on range
	Mounting	DIN-rail (EN 60715)
	Mounting Position	Position 1-6 (optional for single mounting)
	Degree of Protection	IP20 (housing / main circuit terminals)

Connections/Interfaces

Connector Pin / Terminal Marking	Function
1L1, 3L2, 5L3	Main Circuit Line Terminals (Input)
2T1, 4T2, 6T3	Main Circuit Load Terminals (Output)

Wiring Parameter	Standard Specification	UL/CSA Specification
Solid Wire	1/2 x 1...6 mm2 / 1 x 10 mm2	—
Stranded Wire	—	1/2 x AWG 14...8
Flexible Wire without Ferrule	1/2 x 1...6 mm2	1/2 x AWG 14...8
Flexible Wire with Ferrule	1/2 x 0.75...4 mm2 / 1 x 6 mm2	—
Flexible Wire with Ferrule Insulated	1/2 x 0.75...4 mm2 / 1 x 6 mm2	—
Stripping Length	10 mm	10 mm
Tightening Torque	1.4 Nm	14 lb-in
Recommended Screwdriver	Pozidriv 2	Pozidriv 2

Installation Guidelines

DIN Rail Mounting: Mount directly on DIN rail according to EN 60715. Optional mounting positions 1 through 6 are supported for single mounting.
Clearances: Maintain vertical spacing of 100 mm and horizontal spacing of 0 mm to same type units. For conductive boards, maintain vertical distance of 75 mm and horizontal distance of 1.5 mm (up to 690 V).
Wiring & Terminals: Strip wire insulation to 10 mm. Torque main circuit terminal screws to 1.4 Nm (14 lb-in) using a Pozidriv 2 screwdriver.
Altitude: Ensure operating location does not exceed 2000 m above sea level without derating.

Compliance and Certifications

IEC/EN 60947-1
IEC/EN 60947-2
IEC/EN 60947-4-1
UL 60947-1
UL 60947-4-1
CSA-C22.2 No. 60947-1
CSA-C22.2 No. 60947-4-1
Low Voltage Directive 2014/35/EU
RoHS Directive 2011/65/EU

FAQ

What protection functions does the device provide for motor loads?

The device provides fuseless short-circuit protection, thermal overload protection with Trip Class 10A, and phase loss sensitivity for both single-phase and three-phase motor applications.

What is the operating temperature range for the device?

The open operating ambient air temperature range is from -25 degC to +50 degC with built-in temperature compensation, while the storage temperature range is from -50 degC to +80 degC.

What is the recommended tightening torque for terminal connections?

The recommended tightening torque for main terminal connections is 1.4 Nm (14 lb-in) using a Pozidriv 2 screwdriver.

View all FAQs →

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

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Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our technical warranty.

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Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).

For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Color pattern	White
Country of origin	Sweden
Power source	AC-powered