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Up 24 months warranty.

24 months for NEW and 12 months for RECONDITIONED.

Free 30 days returns.

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ABB Spec-Setter THN3321 30A 3P 240V Non-Fused Heavy Duty Safety Switch

In stock - 16 items available
SKU: THN3321 UPC: 783164011289

BULK ORDER Quote.

How Bulk Order Discounts Work

We partner with Cart Whisper to make bulk ordering fast and simple. You can build your cart normally, then submit the entire cart to our team so we can apply bulk pricing and send you a custom quote.

1) Add everything you need to your cart

Shop the site and add all the products and quantities you want — just like a normal order.

2) Open your cart drawer and submit your cart

When you open the cart drawer, you’ll see a Cart Whisper section that looks like this:

Need Help? Cart ID: ####
Submit Cart to Support

Click “Submit Cart to Support” to send your cart to our team.

3) Fill out the quick form

After clicking the submit button, a form will pop up. Please enter:

  • Name

  • Email

  • Short message (what you want / any special notes)

Important: Include your shipping address in the message.
That helps us quote your order accurately, including shipping and taxes (if applicable).

4) We review and send your custom quote

Once we receive your cart submission, we’ll:

  • Review your cart items and quantities

  • Apply any eligible bulk discounts

  • Send you a custom quote with final pricing (and shipping/tax if applicable)


What to include in your message (recommended)

To speed things up, copy/paste this format into the message box:

  • Shipping Address:

  • Notes / Special requests:

SELECT ITEM CONDITION
Regular price $52.00 USD
Regular price Sale $99.00 USD Sale price $52.00 USD
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ABB THN3321: 30 Amp 3-Pole Non-Fused Heavy Duty Safety Switch, 240V, NEMA 1 Indoor, 10 hp 3-Phase, UL Listed.

  • Manufacturer: ABB
  • Brand: ABB
  • Product Range: Spec-Setter (for commercial and industrial applications)
  • UPC: 783164011289
  • Model Number: THN3321
  • Product Type: Heavy Duty Safety Switch
  • Amperage: 30 Amps
  • Poles: 3-Pole
  • Voltage: 240 Volts AC
  • Fusing: Non-Fused
  • Enclosure Rating: NEMA 1 (Indoor)
  • Wire Range: #14-8 AWG Cu; #12-8 AWG Al
  • Horsepower Rating: 3.0 hp (1-Phase, 240V); 10.0 hp (3-Phase, 240V); 5.0 hp (250V DC)
  • Dimensions: Height: 10.3 in; Width: 6.3 in; Depth: 3.3 in
  • Weight: 6.0 lbs
  • Certifications: UL Listed, cUL Listed, GSA Compliant

This ABB Spec-Setter THN3321 non-fused heavy duty safety switch delivers reliable 30A, 3-pole performance for 240V commercial and industrial applications. Designed for NEMA 1 indoor environments, it supports up to 10 hp (3-phase) and ensures safe, efficient power disconnection. Ideal for manufacturing, processing plants, and other demanding settings, this UL-listed switch offers rugged durability and easy installation.

New Condition

  • Products in new condition are unused and in their original state.
  • Backed by our 24-month warranty, ensuring reliability and peace of mind.

Reconditioned Condition

  • Products in reconditioned condition are previously owned but have been professionally tested and inspected to ensure full functionality.
  • May include minor repairs, such as replacing damaged screws, but are not fully refurbished.
  • Covered by our 12-month warranty, guaranteeing performance.

Free Shipping on Orders Over $250

Enjoy free standard shipping on all orders over $250!

  • Applies to the contiguous United States
  • Excludes Alaska, Hawaii, U.S. territories, and oversized items
  • No promo code needed—free shipping is automatically applied at checkout when your order total is $250 or more.

For full details, please refer to our Shipping Policy.

30-Day Hassle-Free Returns

Your satisfaction is our priority!

  • Free returns within 30 days of purchase
  • If you're not completely satisfied, we've got you covered!

For complete terms, please refer to our Return Policy.