Square D TeSys GS Fuse Disconn...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$507.70
Square D TeSys GS Fuse Disconnect Switch, 3P, 30A, 600V

Square D TeSys GS Fuse Disconnect Switch, 3P, 30A, 600V

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Model: GS1DU3

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

$507.70
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Square D TeSys GS Fuse Disconnect Switch, 3P, 30A, 600V, Class J Fuse

The Square D TeSys GS Fuse Disconnect Switch is a 3-pole (3P) switch-disconnector rated 30A/600V UL (30A/800V international), designed for use with Class J fuse links up to 30A. Built for motor circuit applications up to 15kW@400V AC-23, this disconnect switch delivers dependable manual isolation and short-circuit protection for industrial and commercial electrical panels, carrying an IP20 rating (with terminal cover) per IEC 60529 and complying with UL 489 and CSA C22.2 No 5 standards.

Key Features

  • Poles & Rating: 3-pole (3P) switch-disconnector rated 30A/600V UL and 30A/800V international for reliable circuit isolation.
  • Fuse Compatibility: Designed for Class J fuse links up to 30A, providing effective protection through fuse speed fusion.
  • Motor Application Range: Suitable for motor loads up to 15kW@400V AC-23, 18.5kW@500V AC-23, and 25kW@690V AC-23.
  • Mounting Flexibility: Supports both rail and plate mounting for versatile panel installations.
  • Operating Handle Compatible: Pairs with direct operating handle GS1AH106 (ordered separately) or an external front-side mounting handle, and is lockable with a door interlock.
  • Terminal Connections: Power circuit lugs/ring terminals accept 2-6 mm² conductors, tightened to 3 N.m torque.
  • Durable Construction: Fire-resistant 960°C body per IEC 60695-2-1 with IP20 protection (with terminal cover) per IEC 60529.
  • Short-Circuit Withstand: Rated 5.5 kA short-circuit withstand, with high short-circuit performance up to 100 kA.

Certifications & Compliance

  • UL 489 Listed
  • CSA C22.2 No 5 Certified
  • ASEFA Certified
  • LOVAG Certified
  • Lloyd's Register of Shipping (LROS) Certified

Technical Specifications

  • Warranty: 18 months
  • Poles Description: 3P
  • Protected Poles Description: 3t
  • Fuse Type: UL
  • Compatibility Code: GS1D
  • Short Circuit Withstand: 5.5 kA
  • Serviceability: No
  • Returnability: Yes
  • Design: compact
  • Toxic Heavy Metal Free: Yes
  • Mercury Free: Yes
  • ROHS Eur In Scope: Yes
  • WEEE Scope: In
  • With Recycled Cardboard: Yes
  • Field Service Division: PPIBS

Typical Applications

  • Industrial Motor Control Panels
  • Commercial Electrical Switchboards
  • Motor Disconnect and Isolation Points
  • OEM Control Panel Building
  • Renovation and New Equipment Installations

Why Square D?

Square D backs the TeSys GS Fuse Disconnect Switch with a fire-resistant 960°C body, IP20 protection, and compliance with UL 489 and CSA C22.2 No 5 standards for dependable, code-compliant performance. Equipped with a lockable, door-interlock-compatible design and rated for 10,000 mechanical cycles with an average 15-year service life, this disconnect switch is built for reliable long-term use in professional electrical installations.

Manufacturer Resources

Product Specs

Product Type:
Disconnect Switch
Voltage Rating:
600V
Amperage Rating:
30A
Configuration:
3-Pole
Standards:
UL 489
Series:
TeSys GS
Department:
Electrical
Product Group:
Power Distribution
Product Subgroup:
Safety Switches & Disconnects

Square D GS1DU3 – Frequently Asked Questions

1) What fuses does the Square D GS1DU3 disconnect switch take?
The GS1DU3 is built for Class J fuse links up to 30A. It will not accept Class CC, Class R, or any other body style, so if your panel is fused with Class CC links you need a different switch base, such as the Bussmann CCP2-1-30CC, which is a single-pole Class CC fusible disconnect. Fuses are not included with the switch.
2) Is a handle included with the GS1DU3, or do I order it separately?
No handle ships with the switch. The GS1DU3 pairs with the direct operating handle GS1AH106, ordered separately, or with an external front-side mounting handle. Either way the assembly is lockable and works with a door interlock, so you can pad-lock it off for lockout/tagout and kill the switch when the enclosure door opens.
3) Can I use the Square D GS1DU3 as the disconnect for a 10 hp 480V motor?
The GS1DU3 is rated for motor loads up to 15kW at 400V AC-23, 18.5kW at 500V AC-23, and 25kW at 690V AC-23, so a motor in that range is within the switch's duty. Size it on the motor's actual kW and voltage, and confirm your Class J fuse selection stays at or under 30A, which is the ceiling for this switch body at 600V UL.
4) What is the closest three-pole 600V alternative to the Square D GS1DU3 if fuses are not wanted in the disconnect?
The Square D GS1DU3 is a 3-pole, 30A, 600V fuse disconnect switch built around Class J fuse links, so protection lives in the switch itself. If the circuit is already protected upstream and only isolation is needed, the Eaton R5A3016U is a non-fusible three-pole rotary disconnect switch rated 600V. Both give three-pole isolation at 600V; the Square D carries the fuses, the Eaton R5 does not, so overcurrent protection has to come from elsewhere in the panel.
5) Can a Class CC fusible switch be used instead of the Square D GS1DU3 on a 30A motor circuit?
Not as a direct swap. The Square D GS1DU3 is a 3-pole switch-disconnector for Class J fuse links up to 30A, which is what a three-phase motor feeder needs. The Bussmann CCP2-1-30CC is a 30A single-pole UL98 fusible disconnect switch for Class CC fuses - one pole, and a different fuse class, so the fuse bodies are not interchangeable with Class J. Use the CCP2 for single-pole control or branch duty and the GS1DU3 where three poles switch together.
6) What wire size do the terminals on the GS1DU3 accept and what is the tightening torque?
Power circuit lugs or ring terminals take 2 to 6 mm2 conductors, torqued to 3 N.m. That is roughly 14 to 10 AWG, so if you are landing larger feeder conductors on a 30A circuit for voltage-drop reasons, plan on a terminal block or a pigtail rather than forcing the lug.
7) Does the GS1DU3 mount on DIN rail or does it need a back plate?
Either. The switch supports both rail and plate mounting, which is why it turns up in OEM control panels and in retrofits where the existing back pan has no rail. Its compact body is intended for panel interiors, and the IP20 rating applies with the terminal cover fitted, so it belongs inside an enclosure rather than exposed.
8) What standards does the Square D TeSys GS 30A disconnect comply with?
It complies with UL 489 and CSA C22.2 No 5, and carries ASEFA, LOVAG, and Lloyd's Register of Shipping certification. The body is fire-resistant to 960 degrees C per IEC 60695-2-1, and enclosure protection is IP20 per IEC 60529 with the terminal cover in place. That set covers both North American inspection and marine or export work.
9) Is the GS1DU3 rated 600V or 800V?
Both numbers are correct depending on the standard. It is 30A/600V under UL and 30A/800V to international ratings, three-pole with all three poles protected. For a job inspected in the US or Canada, work from the 600V figure.
10) What part number do I order for this Square D 3-pole 30A fusible disconnect?
The manufacturer part number is GS1DU3, in the TeSys GS series, with compatibility code GS1D. Accessories such as the GS1AH106 direct handle are matched to that GS1D code, so quote the base switch and the handle as two separate lines.
11) Any alternative 3-pole 600V disconnects if the Square D TeSys GS does not fit my panel?
Two we carry in the same class: the Bryant 30103D, a 103D Series 600V three-pole manual disconnect switch, and the Eaton R5 Series non-fusible three-pole rotary rated 600V. The Eaton rotary takes the R9 Series direct handle (DHR5) if you need a shaft-and-handle operator rather than a lever. Neither of those is a Class J fuse base, so if the circuit depends on fuses for short-circuit protection stay with the GS1DU3.
12) How does the Bryant 30103D compare with the Square D GS1DU3 for a 600V three-pole disconnect?
Both are three-pole 600V disconnects. The Bryant 30103D is a 103D Series manual disconnect switch, a straightforward manually operated isolating switch. The Square D GS1DU3 is a fuse disconnect switch that accepts Class J fuse links up to 30A and complies with UL 489 and CSA C22.2 No 5, with a lockable, door-interlock-compatible design. Choose the Bryant where a plain manual isolating means is specified and the Square D where the disconnect must also hold the branch fuses.
13) Is the Eaton DHR5 handle a substitute for the Square D GS1AH106 handle on the GS1DU3?
No. The Square D GS1DU3 pairs with the direct operating handle GS1AH106, ordered separately, or an external front-side mounting handle. The Eaton DHR5 is a direct handle for Eaton R9 Series rotary disconnect switches, so it belongs to the Eaton rotary platform rather than the TeSys GS body. Order the GS1AH106 for the Square D switch and keep the DHR5 with its matching Eaton rotary disconnect.
14) How long will a TeSys GS switch last in a panel that gets operated daily?
Square D rates the GS1DU3 at 10,000 mechanical cycles with an average 15-year service life. For a daily-operated maintenance disconnect that is decades of switching. One thing to plan for: the switch is listed as non-serviceable, so there are no internal replacement parts, and a worn unit gets swapped rather than rebuilt.
15) Is the TeSys GS disconnect RoHS compliant and free of heavy metals?
Yes on all three counts: in scope and compliant for European RoHS, mercury free, and free of toxic heavy metals. It also falls in WEEE scope and ships in recycled cardboard, which matters if you are documenting sustainable procurement on an institutional or LEED-tracked job.
How fast can I get the Square D GS1DU3 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 Square D GS1DU3 come with a warranty?
Absolutely. The Square D GS1DU3 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 Square D GS1DU3?
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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