Leviton MS403-DS Switch

Product Overview

The Leviton MS403-DS is a genuine Leviton non-reverse motor starter switch in an ebony finish. It is specified as a short-body, 3-pole, 3-phase motor starter switch rated 40A at 600V.

Designed for residential, commercial, and industrial electrical applications, this unit is part of Leviton’s industrial momentary/maintained motor starter switch line and is sold individually (unit of measure: EA).

Key Features

• Non-reverse motor starter switch (NON-REV MTR STRT)
• Short-body configuration in ebony finish
• 3-pole, 3-phase design
• Rated 40 A at 600 V
• Genuine Leviton product

Function and Intended Use

The MS403-DS is a motor starter switch configured to provide non-reverse operation for motor control circuits. It is intended for use where a maintained or momentary motor starter switch is required in residential, commercial, or industrial installations.

• Non-reverse motor starter switch — prevents reversing action in the control circuit
• Suitable for applications that require a short-body starter switch in an ebony finish

Electrical Ratings

Use the MS403-DS where a 3-pole, 3-phase switch rated for 40 amps at up to 600 volts is acceptable. Confirm the switch ratings against your system requirements before installation.

• Current rating: 40 A
• Voltage rating: 600 V
• Poles/Phase: 3-pole, 3-phase

Configuration, Finish, and Identification

The MS403-DS is described as a short-body switch in an ebony finish. It is part of Leviton’s industrial momentary/maintained motor starter switch category and carries the model/item number MS403-DS.

• Model: MS403-DS
• Finish: Ebony
• Body style: Short

Weight and Packaging

The product is sold per unit (EA). Use the listed weight for handling and shipping planning.

• Unit weight: 4.34 lb (per product data)

Before You Order

Confirm the model number and the electrical ratings required for your application before ordering.

• Verify that a 3-pole, 3-phase, 40 A at 600 V non-reverse motor starter switch meets your installation and code requirements.
• If uncertain about compatibility or installation, consult a qualified electrician or the project electrical engineer.

Ordering from Lumera Electric

Check the purchasing options shown on the Lumera Electric product page for Leviton MS403-DS Switch. For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.