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Eaton Heavy-Duty Fused Safety Switch, NEMA 3R, Painted Galvanized Steel
Model: EAT-DH-221NDK
Eaton Heavy-Duty Fused Safety Switch, NEMA 3R, Painted Galvanized SteelThe Eaton Heavy-Duty Fused Safety Switch is a single-throw disconnect built for demanding commercial and industrial power...
Eaton
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$616.69
Eaton Heavy-Duty Double-Throw Non-Fused Safety Switch, Painted Steel, NEMA 1
The Eaton Heavy-Duty Double-Throw Non-Fused Safety Switch is a three-pole disconnect built for reliable power-switching duty in commercial and industrial electrical systems. Rated 100A at 240V and housed in a painted steel NEMA 1 enclosure, this K-series switch delivers heavy-duty double-throw switching for applications requiring dependable source transfer. The switch is UL Listed and, with a neutral or ground lug kit installed, is suitable for service entrance use.
Key Features
- Amperage Rating: 100A for heavy-duty switching applications.
- Voltage Rating: 240V for standard commercial and industrial power circuits.
- Number of Poles: Three-pole configuration for three-wire systems.
- Durable Construction: Painted steel enclosure for reliable mechanical protection.
- Switch Type: Heavy duty, double-throw, non-fused design for dependable source-transfer switching.
- Enclosure Rating: NEMA 1 enclosure for general-purpose indoor installations.
- Service Entrance Capable: Suitable for service entrance use when a neutral or ground lug kit is installed.
- Series: Part of Eaton's K-series heavy-duty safety switch line.
Certifications & Compliance
- UL Listed
Technical Specifications
- Department: Electrical
Typical Applications
- Commercial and Industrial Power Distribution
- Service Entrance Disconnect Switching
- Source Transfer and Double-Throw Switching Applications
- Motor Control and Equipment Disconnects
- Panelboard and Load Center Supporting Equipment
Why Eaton?
Eaton's K-series heavy-duty safety switches combine painted steel construction with a UL Listed design to deliver dependable, code-compliant disconnect performance for demanding electrical environments. The double-throw, non-fused configuration is engineered for professional installations that require consistent, heavy-duty switching reliability. Choose Eaton for electrical infrastructure built to perform in commercial and industrial power systems.
Manufacturer Resources
Product Specs
- Department:
- Electrical
- Enclosure material:
- Painted steel
- Certifications:
- UL Listed
- Amperage Rating:
- 100A
- Product Type:
- Safety Switch
- Product Material:
- Painted Steel
- Voltage Rating:
- 240V
- Configuration:
- NEMA 1 Enclosure
- Listing:
- UL Listed
- Series:
- K-series
- Product Group:
- Power Distribution
- Product Subgroup:
- Safety Switches & Disconnects
Eaton DT223UGK – Frequently Asked Questions
1) Can this Eaton switch be used as a service entrance disconnect?
Yes, but only with the correct kit installed. The K-series double-throw switch is suitable for service entrance use once a neutral or ground lug kit is fitted. Without that kit it is a disconnect only, so plan the lug kit into the order if the switch is landing at the service.
2) Does this switch include fuses or fuse holders?
No. It is a non-fused design, so overcurrent protection has to come from upstream breakers or fuses elsewhere in the system. If you need the disconnect itself to carry the fuses, a fusible heavy-duty unit such as the ABB Spec-Setter 3-pole 600V AC NEMA 1 switch is the type to look at.
3) Will a 240V rated switch work on my 480V three-phase system?
No. The rating is 240V, so it must not be applied on a 480V system. For higher-voltage feeders you would need a 600V class device, for example the ABB THN3365A 400A 3-pole 600V heavy-duty switch in NEMA 1.
4) What is the closest unfused heavy-duty safety switch alternative to the Eaton DT223UGK if I don't need double-throw switching?
The Eaton K-series DT223UGK is a non-fused heavy-duty switch rated 100A at 240V in a painted steel NEMA 1 enclosure, and its double-throw mechanism is built for transferring a load between two sources. If the job is a straight single-source disconnect with no transfer, the Square D VisiPacT Heavy Duty Unfused Safety Switch in a NEMA 1 enclosure covers the unfused disconnect duty without the second source position. Pick the Eaton when a load has to be switched between a normal and an alternate supply; pick the single-throw VisiPacT when there is one feeder in and one load out.
5) The Eaton DT223UGK has a painted steel NEMA 1 enclosure - what do I use outdoors or in a washdown area?
The Eaton K-series double-throw switch uses a painted steel NEMA 1 enclosure, which is a general-purpose indoor rating and is not intended for wet, outdoor, or corrosive locations. For those environments the Square D VisiPacT Heavy Duty Fused Safety Switch is offered in a NEMA 4X stainless steel enclosure. That unit is a fused single-throw switch rather than a double-throw disconnect, so an outdoor transfer application will need the double-throw device relocated indoors or a different enclosure strategy.
6) I need fuses in the disconnect - can I use the Eaton DT223UGK?
No. The Eaton K-series DT223UGK is a non-fused design, so it provides disconnect and source-transfer switching only and carries no overcurrent protection of its own. When the drawing calls for fused disconnection, the ABB Spec-Setter Heavy-Duty Fusible Safety Switch is a 3-pole fusible heavy-duty switch in a NEMA 1 enclosure rated 600V AC, and the Square D VisiPacT Heavy Duty Fused Safety Switch is a fused option in a NEMA 4X stainless enclosure. Note that neither of those is a double-throw device, so branch protection has to be reconciled elsewhere if transfer switching is also required.
7) The Eaton DT223UGK is rated 240V - what heavy-duty switch should I spec for a 480V or 600V circuit?
The Eaton K-series double-throw switch is rated 240V, so it is not the device for a 480V or 600V system. For higher-voltage heavy-duty service, the ABB THN3365A is a 400A 3-pole 600V heavy-duty safety switch in a NEMA 1 enclosure, and the ABB Spec-Setter heavy-duty fusible switch is also a 3-pole 600V AC device in NEMA 1. Both are single-throw, so a 600V transfer application needs a different approach than simply swapping the Eaton.
8) What is the difference between the DT223UGK and DT323FGK configurations?
Both are Eaton K-series double-throw switches ordered under two catalog numbers: DT223UGK and DT323FGK. Specify the exact catalog number on your order, since the configuration suffix is what determines which unit ships.
9) Is heavy duty worth it over a general duty safety switch for a facility disconnect?
For commercial and industrial power distribution, motor disconnects, and source transfer, heavy duty is the grade to spec, and the Eaton K-series is a heavy-duty line. General duty switches, such as the ABB TG-Series Spec-Setter fusible safety switch, are aimed at lighter residential and light commercial duty. Match the grade to the duty cycle and the engineer's drawing.
10) Will three poles handle my three-phase generator transfer, and what about the neutral?
The switch is three-pole, so it switches the three phase conductors on a three-wire system. The neutral is not switched by the poles; if your installation needs a neutral or ground connection, that comes from the neutral or ground lug kit, which is also what makes the switch suitable for service entrance duty.
11) Is a general duty safety switch an acceptable substitute for the Eaton K-series double-throw switch?
They are built to different duty classes. The Eaton DT223UGK is a heavy-duty K-series switch, UL Listed, and suitable for service entrance use when a neutral or ground lug kit is installed. The ABB TG-Series Spec-Setter is a general duty fusible switch, a lighter classification typically specified for residential and light commercial loads. If the specification on the drawing says heavy duty, or the switch is serving as a service entrance or industrial disconnect, the general duty unit is not a like-for-like swap.
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Does the Eaton DT223UGK come with a warranty?
Absolutely. The Eaton DT223UGK is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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