ABB TH Heavy-Duty Fusible Safe...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$693.00
ABB TH Heavy-Duty Fusible Safety Switch, NEMA 3R Enclosure

ABB TH Heavy-Duty Fusible Safety Switch, NEMA 3R Enclosure

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Model: TH3361R

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

$693.00
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ABB TH Heavy-Duty Fusible Safety Switch, NEMA 3R Enclosure

ABB's TH Heavy-Duty Fusible Safety Switch delivers rugged, reliable disconnect protection for commercial and industrial electrical systems. This 3-pole, 600V AC fusible switch is housed in a NEMA 3R (outdoor) enclosure and is available across an amperage range from 30 amperes up to 100 amperes, letting you select the exact disconnect capacity your circuit requires while standardizing on one dependable Spec-Setter platform. This heavy-duty line is engineered for the toughest job-site demands, including cement foundries, steel mills, and processing plants where dependable disconnect performance is critical. ABB offers a wide range of safety switches, from general-duty models for residential and light commercial use to this extensive heavy-duty line built specifically for demanding commercial and industrial applications, plus double-throw switches for emergency generator systems.

Key Features

  • Amperage Options: Available in ratings from 30A to 100A, allowing selection to match the specific circuit protection and disconnect requirements of the installation.
  • 3-Pole Configuration: Three-pole design supports three-phase circuit disconnection for commercial and industrial equipment.
  • 600V AC Voltage Rating: Rated for 600V AC service, suitable for demanding heavy-duty electrical distribution applications.
  • Fusible Switch Design: Accepts fuses for overcurrent protection, allowing coordinated circuit protection alongside disconnect functionality.
  • NEMA 3R Enclosure: Outdoor-rated enclosure protects internal components from rain, sleet, and external ice formation, supporting reliable outdoor installations.
  • Heavy-Duty Application Rating: Built for heavy-duty commercial and industrial use, exceeding the demands of general-duty switches for tougher environments.
  • Spec-Setter Series: Part of ABB's Spec-Setter line of safety switches, designed for rugged, reliable, and easy installation on any job site.
  • Single-Unit Packaging: Packaged 1 EA for straightforward stocking and job-site delivery.

Certifications & Compliance

  • NEMA 3R Outdoor-Rated Enclosure

Technical Specifications

  • Enclosure: NEMA 3R (Outdoor)
  • Number Of Poles: 3
  • Voltage Rating: 600V AC
  • Amperage Options: 30A, 100A
  • Application: Heavy-Duty
  • Packaging: 1 EA

Typical Applications

  • Commercial and Industrial Electrical Disconnects
  • Three-Phase Motor and Equipment Circuits
  • Outdoor Electrical Distribution Panels
  • Panelboard and Feeder Disconnect Switching
  • Heavy Industrial Environments Such as Foundries and Processing Plants
  • Renovation and New Construction Electrical Projects

Why ABB?

ABB safety switches are engineered for rugged, reliable performance across the toughest commercial and industrial environments. With a heavy-duty rating, 600V AC service, 3-pole configuration, a NEMA 3R outdoor-rated enclosure, and amperage options spanning 30A to 100A, this Spec-Setter switch is built for dependable, code-compliant disconnect protection on demanding job sites, from processing plants to panelboard feeder applications.

Manufacturer Resources

Product Specs

Product Type:
Fusible Safety Switch
Configuration:
3-Pole
Voltage Rating:
600V
Amperage Rating:
30A - 100A
Department:
Electrical
Product Group:
Wiring Devices
Standards:
NEMA 3R
Series:
Spec-Setter
Product Subgroup:
Safety Switches

ABB TH3361R – Frequently Asked Questions

1) Can this ABB safety switch be mounted outdoors on an exterior wall?
Yes. The ABB Spec-Setter heavy-duty fusible switch comes in a NEMA 3R enclosure, which is the outdoor rating that protects against rain, sleet and external ice formation. That makes it suitable for exterior wall mounting, rooftop equipment disconnects and outdoor distribution. If you need a washdown or corrosive environment, NEMA 3R is not the right rating and you'd want a stainless NEMA 4X unit such as the Square D VisiPacT fused switch.
2) What amperages does the ABB TH3361R and TH3363R safety switch come in?
Two ratings: 30 amperes, ordered as TH3361R, and 100 amperes, ordered as TH3363R. Both are 3-pole, 600V AC fusible switches in the NEMA 3R outdoor enclosure. Pick the frame to match your fuse size and the feeder it is protecting.
3) Do fuses come with the ABB fusible safety switch or do I order them separately?
It is a fusible switch, meaning it accepts fuses for overcurrent protection alongside the disconnect function, but the fuses themselves are a separate order. The unit ships packaged 1 EA. Size your fuses to the load and to the switch frame you chose, 30A or 100A.
4) Will a 3-pole 600V disconnect work on a 480V three-phase motor circuit?
Yes. The 600V AC rating is the maximum system voltage, so 480Y/277 and 240V three-phase circuits are both within it. The three poles switch all three ungrounded conductors, which is what a three-phase motor or equipment disconnect needs.
5) What is the difference between the ABB TH3361R safety switch and the Square D VisiPacT VHU361N?
Both are heavy duty 600V-class disconnects, but they differ in two ways that decide the job. The ABB TH3361R is a fusible switch, so it accepts fuses for overcurrent protection alongside the disconnect function, and it comes in a NEMA 3R outdoor-rated enclosure that protects against rain, sleet, and external ice. The Square D VHU361N is an unfused heavy duty switch in a NEMA 1 enclosure, which is indoor only and provides disconnect means without fuse protection. Use the ABB TH3361R when the circuit needs fuse coordination and the switch is mounted outdoors; use the Square D VHU361N where overcurrent protection is handled upstream and the switch sits in a dry indoor space.
6) I need a fusible heavy duty disconnect for a wash-down or coastal area. Is the ABB NEMA 3R switch the right choice?
For a corrosive or wash-down environment, look at the Square D VisiPacT VH324NDSGL instead. It is a heavy duty fused safety switch in a NEMA 4X stainless steel enclosure, which is built for hose-down and corrosive exposure. The ABB heavy-duty fusible switch is supplied in a NEMA 3R enclosure, which is outdoor-rated against rain, sleet, and external ice formation but is a painted-steel-class outdoor rating rather than a corrosion-resistant stainless one. Both are fusible heavy duty switches, so the fuse coordination approach carries over either way.
7) Can I use the ABB TH3363R in place of an Eaton DT-223UGK for a generator transfer application?
No, those are different devices. The Eaton DT-223UGK is a heavy-duty double-throw non-fused switch in a painted steel NEMA 1 enclosure, and a double-throw switch is what you use to transfer a load between two sources such as utility and an emergency generator. The ABB TH3363R is a single-throw 3-pole fusible disconnect rated 600V in a NEMA 3R enclosure; it opens one circuit, it does not select between two sources. If the drawing calls for manual transfer, the double-throw Eaton is the correct family. If it calls for a fused service or feeder disconnect outdoors, the ABB is.
8) What are my options if I need a 30 amp outdoor fused disconnect for a rooftop condensing unit?
The ABB TH3361R is the direct fit: a 30 ampere, 3-pole, 600V AC fusible safety switch in a NEMA 3R outdoor enclosure, which is the standard configuration for a rooftop three-phase equipment disconnect. If the unit is on a coastal or chemically aggressive roof, the Square D VisiPacT VH324NDSGL is a heavy duty fused switch in a NEMA 4X stainless steel enclosure. Skip the Square D VHU361N and the Eaton DT-223UGK here; both are non-fused and both are NEMA 1 indoor enclosures.
9) What is the difference between a heavy-duty and a general-duty safety switch, and which do I need?
Heavy duty is the line built for commercial and industrial service, and this ABB Spec-Setter switch is in it, rated 600V AC for cement foundries, steel mills, processing plants and similar. General-duty switches are the lighter line intended for residential and light commercial work at lower voltage. If the circuit is three-phase at 480V, or the equipment runs hard, or the enclosure sits outdoors on an industrial site, go heavy duty.
10) I need a disconnect without fuses. Is there an unfused version?
The ABB TH3361R and TH3363R are fusible switches, so they are built to take fuses. If the upstream breaker already provides the overcurrent protection and you only need a local disconnecting means, look at an unfused heavy-duty switch instead, such as the Square D VisiPacT Heavy Duty Unfused Safety Switch in NEMA 1. Note that NEMA 1 is an indoor enclosure, so for an outdoor location you still need a 3R or better rating.
11) Can I use this ABB switch for a generator transfer application?
No. This is a single-throw disconnect, one source in and one load out. Emergency generator changeover needs a double-throw switch, which ABB builds as a separate line within its safety switch range; the Eaton K-series Heavy-Duty Double-Throw Non-Fused Safety Switch is another option we carry, though it is a NEMA 1 indoor enclosure.
12) Is a 30A disconnect enough for a rooftop HVAC unit?
Depends on the nameplate. The 30A frame, TH3361R, covers small rooftop condensers and similar loads where the maximum overcurrent protection on the nameplate is 30A or less. Above that, step up to the 100A frame, TH3363R. Both are the same 3-pole 600V NEMA 3R build, so the outdoor mounting and voltage do not change with the frame size.
13) If the disconnect is going indoors, do I still need the ABB NEMA 3R switch?
Not necessarily. The ABB heavy-duty fusible switch is built in a NEMA 3R outdoor enclosure that guards against rain, sleet, and external ice, which is protection you are paying weight and size for if the switch hangs in a mechanical room. For indoor heavy duty service, the Square D VisiPacT VH324NDSGL is a fused heavy duty switch if you still need fuse protection, and the Square D VHU361N is a heavy duty unfused switch in NEMA 1 if overcurrent protection sits upstream. Keep the ABB NEMA 3R version for rooftop, yard, and exterior wall mounting.
14) Which heavy duty disconnects come in a fusible version versus non-fused?
Among heavy duty disconnects, the ABB TH3361R and TH3363R are fusible switches that accept fuses for coordinated overcurrent protection along with the disconnect function, and the Square D VisiPacT VH324NDSGL is a fused heavy duty switch in stainless steel. On the non-fused side, the Square D VHU361N is a heavy duty unfused switch and the Eaton DT-223UGK is a heavy-duty double-throw non-fused switch. The choice follows the one-line: fused when the switch is the overcurrent device for the branch or feeder, non-fused when a breaker upstream already handles that and the switch is only a means of disconnect.
15) Is this ABB disconnect suitable as a service disconnect on an outdoor panelboard feeder?
It is built for that kind of duty: panelboard and feeder disconnect switching, outdoor electrical distribution panels, and three-phase motor and equipment circuits are all listed applications. The NEMA 3R enclosure handles the outdoor location and the 600V AC, 3-pole build covers standard commercial three-phase feeders.
How fast can I get the ABB TH3361R 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 ABB TH3361R come with a warranty?
Absolutely. The ABB TH3361R 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 ABB TH3361R?
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
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