Leviton 436378 Industrial Grad...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$27.73
Leviton 436378 Industrial Grade Toggle AC Motor Starting Switch, 2-Pole, 600V

Leviton 436378 Industrial Grade Toggle AC Motor Starting Switch, 2-Pole, 600V

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Model: MS302-DS

In Stock (leaves warehouse same day if ordered before 3pm ET)

$27.73
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Leviton 436378 Industrial Grade Toggle AC Motor Starting Switch, 2-Pole, 600V

The Leviton 436378 is an Industrial Grade toggle AC motor starting switch built for demanding motor control applications. Configured as a 2-Pole, 600V, 1-Phase device, this switch (based on the Leviton MS602-BW platform) delivers dependable manual motor starting performance in a rugged toggle-operated body finished in black. It is available in 30A, 40A, or 60A amperage options to match your specific motor load requirements.

Key Features

  • Industrial Grade Construction: Built to Industrial Grade standards for long-term reliability in commercial and industrial motor control circuits.
  • 2-Pole Configuration: Two-pole switching design suited for single-phase AC motor starting duty.
  • 600V Rating: Rated for 600-volt applications, supporting a wide range of industrial motor circuits.
  • 1-Phase Operation: Engineered specifically for 1-Phase AC motor starting control.
  • Multiple Amperage Options: Offered in 30A, 40A, and 60A versions to match motor load and circuit demands.
  • Toggle Actuation: Simple, positive toggle operation for straightforward manual motor start control.
  • Black Finish: Durable black housing finish suited for industrial equipment environments.

Technical Specifications

  • Poles: 2

Typical Applications

  • Industrial and Commercial Motor Control Circuits
  • Single-Phase AC Motor Starting Applications
  • Manufacturing and Processing Equipment
  • Pump, Fan, and Compressor Motor Starting
  • Panelboard and Motor Control Center Installations

Why Leviton?

Leviton's Industrial Grade toggle motor starting switches are engineered for the reliability that industrial and commercial motor control applications demand. With a robust 2-Pole, 600V, 1-Phase design and a choice of amperage ratings, the Leviton 436378 is built to deliver consistent, code-compliant performance for professional electrical installations.

Manufacturer Resources

Product Specs

Poles:
2
Voltage Rating:
600V
Grade:
Industrial
Product Type:
Motor Starting Switch
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Toggle Switches

Leviton MS302-DS – Frequently Asked Questions

1) Will a Leviton 436378 motor starting switch run a three-phase motor?
No. The Leviton 436378 toggle motor starting switch is a 2-pole, 1-phase device, so it handles single-phase AC motor starting duty only. A three-phase motor needs a 3-pole manual motor starter instead. Two poles here means both ungrounded conductors of a 1-phase circuit break together when the toggle is thrown.
2) Which amperage Leviton MS-series motor starting switch do I need for my motor?
The 436378 toggle starter comes in three ratings: 30A (MS302-DS), 40A (MS402-DS), and 60A (MS602-BW). Pick the one that covers the full-load current of the single-phase motor plus whatever the equipment nameplate and your circuit sizing call for. All three share the same 2-pole, 600V body, so the only thing changing across them is the current rating.
3) Can a Leviton 436378 toggle motor starter be used on a 480V circuit?
Yes. The switch is rated 600V, which covers 120V, 208V, 240V, 277V and 480V single-phase motor circuits. The 600V rating is the ceiling for the device, not the required supply.
4) Is the Leviton MS302-DS a manual starter or a magnetic motor starter?
Manual. The Leviton MS-series is a toggle-operated motor starting switch, meaning someone throws the handle to start and stop the motor. There's no coil, no control voltage, and no remote start/stop. If you need the motor to drop out on power loss, restart from a remote pushbutton, or take a control signal from a panel, you need a magnetic starter, not this switch.
5) Is the Leviton 436378 motor switch rated for industrial use or is it a commercial spec grade device?
It's built to Leviton's Industrial Grade, the heaviest of their device grades, and it's intended for motor control circuits in manufacturing and processing equipment, pump, fan and compressor starting, and motor control center installations. For a facility standardizing on one manual starter across equipment, this is the industrial tier rather than a general-purpose toggle switch.
6) Does a Leviton motor starting switch provide overload protection for the motor?
The 436378 is a motor starting switch, not a protected starter. It switches the motor circuit; it does not carry the thermal overload element that a combination manual motor starter with overload protection has. Where the installation requires running overload protection, that has to come from elsewhere in the circuit. Verify against the equipment drawing before you substitute this for a protected starter.
7) What's the difference between the Leviton MS602-BW and the MS302-DS and MS402-DS?
Amperage, and that's the distinction a distributor needs. MS302-DS is the 30A, MS402-DS the 40A, and MS602-BW the 60A version of the same 2-pole 600V toggle AC motor starting switch. Same platform, same 1-phase configuration, same black toggle body; different current rating. Order by the MS part number rather than by amperage alone so the right one lands.
8) Will a Leviton toggle motor starting switch fit a standard wiring device box and plate?
It's a toggle-actuated wiring device in a black body, so it installs where a toggle device goes rather than in a starter enclosure. Confirm the plate opening matches a toggle device on your equipment or panel front before ordering.
How fast can I get the Leviton MS302-DS delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Leviton MS302-DS come with a warranty?
Absolutely. The Leviton MS302-DS is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Leviton MS302-DS?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Leviton MS302-DS from ZenSupply?
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