ABB THAUX Spec-Setter DPDT Aux...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$161.70
ABB THAUX Spec-Setter DPDT Auxiliary Contact Switch

ABB THAUX Spec-Setter DPDT Auxiliary Contact Switch

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Model: THAUX21D

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

$161.70
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ABB THAUX Spec-Setter DPDT Auxiliary Contact Switch

The ABB THAUX Spec-Setter DPDT Auxiliary Contact Switch is a double-pole, double-throw (DPDT) auxiliary switch accessory engineered for ABB's Spec-Setter line of safety switches, spanning general duty switches for residential and light commercial work up through heavy-duty, dust-tight, and stainless steel switches built for demanding industrial environments. This auxiliary contact is available across ABB's Spec-Setter safety switch amperage lineup, from 30 amperes through 200 amperes, so electrical professionals can match the correct auxiliary switch to the safety switch enclosure they are servicing. Packaged 1 EA, this accessory adds remote position signaling or interlocking capability to compatible ABB safety switch enclosures, letting electricians and facility teams monitor switch status without compromising ABB's rugged, easy-to-install design. Whether the application is a cement foundry, steel mill, processing plant, or a straightforward commercial panel, this DPDT auxiliary switch keeps pace with ABB's full Spec-Setter safety switch lineup, including double-throw switches commonly paired with emergency generators. Because it mounts directly inside compatible enclosures, the auxiliary switch requires no separate housing, simplifying both new installations and field retrofits on existing Spec-Setter safety switches across the 30A-200A range.

Key Features

  • Contact Configuration: DPDT (double-pole, double-throw) auxiliary contacts provide position indication or remote signaling on compatible ABB safety switches.
  • Amperage Coverage: Available for ABB Spec-Setter safety switches rated from 30 amperes to 200 amperes, covering a wide range of enclosure sizes.
  • Broad Compatibility: Designed to pair with ABB's Spec-Setter safety switch family, spanning general duty, heavy-duty, dust-tight, and stainless steel switch models.
  • Rugged ABB Construction: Built to the same reliable, easy-to-install standard as ABB's safety switch line for demanding commercial and industrial duty.
  • Generator-Ready: Suits double-throw safety switch setups commonly used with emergency generators.
  • Remote Status Monitoring: Enables electricians and facility teams to confirm switch position without opening the enclosure.
  • Convenient Packaging: Supplied 1 EA per package for straightforward stocking and replacement.

Technical Specifications

  • Contact Configuration: DPDT
  • Amperage Option: 30 amperes or 200 amperes
  • Packaging: 1 EA

Typical Applications

  • Residential and Light Commercial Electrical Systems
  • Commercial and Industrial Safety Switch Assemblies
  • Emergency Generator Double-Throw Switch Setups
  • Heavy-Duty Industrial Environments such as Cement Foundries, Steel Mills, and Processing Plants
  • Dust-Tight and Stainless Steel Safety Switch Installations

Why ABB?

ABB backs its Spec-Setter safety switch line with rugged, reliable, and easy-to-install engineering, from general duty switches for everyday residential and light commercial work to heavy-duty, dust-tight, and stainless steel switches built for the harshest industrial settings. This DPDT auxiliary switch, available across the 30A-200A Spec-Setter range, extends that same dependable design, giving electrical professionals a straightforward, code-compliant way to add position-signaling capability to their ABB Spec-Setter safety switch installations, no matter how demanding the environment.

Product Specs

Product Type:
Auxiliary Contact Switch
Configuration:
DPDT
Series:
Spec-Setter
Country of Origin:
Unknown
Department:
Electrical
Product Group:
Wiring Devices
Amperage Rating:
30A - 200A
Product Subgroup:
Switches

ABB THAUX21D – Frequently Asked Questions

1) Which ABB auxiliary contact do I order for a 30 amp Spec-Setter safety switch versus a 200 amp one?
The ABB Spec-Setter DPDT auxiliary contact comes in two amperage-matched versions: THAUX21D for 30 ampere switches and THAUX64D for 200 ampere switches. Pick the one that matches the frame size of the safety switch you are adding it to, since the accessory is built to mount inside that enclosure.
2) What does a DPDT auxiliary contact actually do on a safety switch?
It gives you a set of double-pole, double-throw contacts that follow the position of the switch blade. Wire them into a PLC input, a pilot light, or an interlock circuit and you can confirm whether the disconnect is open or closed without walking to the panel and opening the door. Two poles means you can signal two separate circuits, and double-throw gives you both a normally-open and a normally-closed path on each.
3) Can I add this ABB auxiliary switch to a safety switch that is already installed, or does it have to be ordered with a new switch?
Both work. The contact mounts directly inside compatible Spec-Setter enclosures and needs no separate housing, so it goes into an existing switch in the field just as easily as it does into a new one. Plan the job as a de-energized retrofit and land your signal wiring out of the enclosure the same way you would any control conductor.
4) Will this auxiliary contact work on a heavy duty or stainless steel ABB disconnect, or only general duty?
It spans the whole Spec-Setter family: general duty switches for residential and light commercial work, plus heavy duty, dust-tight, and stainless steel models built for industrial settings like cement foundries, steel mills, and processing plants. The deciding factor is amperage match, not duty class, so confirm you are ordering the 30 ampere or 200 ampere version to suit the switch.
5) Will an ABB THAUX auxiliary contact fit an Eaton breaker or disconnect?
No. Auxiliary switches are frame-specific accessories. The THAUX units are built for ABB Spec-Setter safety switch enclosures. For Eaton EG-frame or JG-frame equipment you want Eaton's own Series G auxiliary switch accessory instead. Match the accessory to the brand and frame of the device it mounts in.
6) What is the Eaton equivalent of the ABB THAUX auxiliary switch?
The closest Eaton counterpart is the Eaton EG-/JG-Frame Series G Auxiliary Switch Accessory. Both are auxiliary switch accessories that mount inside the parent device to provide position signaling, but they are not interchangeable: the ABB THAUX auxiliary contact is built for ABB Spec-Setter safety switch enclosures, while the Eaton unit is dimensioned for Eaton EG-Frame and JG-Frame breakers in the Series G line. Match the accessory to the enclosure or breaker frame you actually have in the field - an auxiliary switch sized for a molded case breaker frame will not land on a Spec-Setter safety switch mechanism.
7) I need auxiliary contacts on a molded case circuit breaker, not a safety switch - is the ABB THAUX the right part?
No. The ABB Spec-Setter DPDT auxiliary contact is designed to mount inside ABB Spec-Setter safety switch enclosures, which are disconnect switches rather than breakers. For breaker-mounted auxiliary contacts, the Eaton EG-/JG-Frame Series G Auxiliary Switch Accessory is the frame-specific part, made for Eaton EG-Frame and JG-Frame breakers. Confirm the breaker frame designation stamped on the breaker face before ordering, since breaker auxiliary switches are keyed to a specific frame size.
8) I have ABB Spec-Setter double-throw switches on a generator transfer setup - which auxiliary contact should I order and does amperage matter?
Stay with the ABB Spec-Setter DPDT auxiliary contact, and yes, match the amperage of the switch it goes into: THAUX21D for 30 ampere switches and THAUX64D for 200 ampere switches. The auxiliary contact suits double-throw safety switch setups commonly used with emergency generators, so it will signal generator-versus-utility position back to a controller. An Eaton Series G auxiliary switch accessory is a breaker-frame part and is not a substitute in an ABB double-throw disconnect.
9) I have a double-throw ABB switch feeding a generator. Can I get position signaling off it?
Yes, this is one of the intended uses. The DPDT auxiliary contact suits double-throw safety switch setups of the kind commonly paired with emergency generators, so you can signal whether the load is sitting on utility or on generator without a separate sensing device.
10) What contact arrangement does the ABB THAUX auxiliary switch give me compared with a typical 1A1B breaker auxiliary?
The ABB Spec-Setter auxiliary contact is a DPDT arrangement - two poles, each with a normally open and a normally closed transfer contact - so a single unit can feed two separate indication or interlock circuits from one switch position. The Eaton EG-/JG-Frame Series G Auxiliary Switch Accessory is the comparable accessory on the Eaton side for breaker applications. If your control scheme needs two independent changeover circuits from one disconnect, the DPDT arrangement on the ABB part covers it without stacking a second accessory.
11) How many auxiliary contacts come in a pack?
One each. The ABB Spec-Setter DPDT auxiliary contact is supplied 1 EA per package, so if you are outfitting a row of disconnects across a facility, order one unit per switch.
How fast can I get the ABB THAUX21D 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 THAUX21D come with a warranty?
Absolutely. The ABB THAUX21D 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 THAUX21D?
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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