Eaton DT221URK-NPS Safety Switch - UL Listed
Part Number: DT221URK-NPS
Quick Summary
The Eaton DT221URK-NPS safety switch provides reliable general-duty control for electrical distribution panels and service entrances. Designers and maintenance teams often struggle with outdoor reliability, downtime, and regulatory compliance when selecting rugged protection devices. UL Listed certification accompanies a NEMA 3R rainproof enclosure, backed by a 30 A rating and non-fusible, two-pole design. Designed for service entrances and outdoor installations, it delivers reliable protection with easy wiring and installation efficiency, supporting UL-listed safety while integrating with standard Eaton K-Series components. This combination helps OEMs and maintenance teams reduce commissioning time and improve uptime in harsh environments and budgets.
Product Information
Extended Description
DT221URK-NPS Eaton: Eaton general duty double-throw safety switch, 30 A, K-Series design, Includes neutral, NEMA 3R, Painted galvanized steel, Rainproof, Non-fusible, Two-pole, Three-wire, 240 Vac - 250Vdc
Product Name
Eaton general duty double-throw safety switch
Catalog Number
DT221URK-NPS
UPC
782114495810
Product Length/Depth
9.88 in
Product Height
24.63 in
Product Width
11.94 in
Product Weight
34 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
UL Listed
Catalog Notes
Suitable for service entrance use
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Specification Sheet - DT221URK-NPS
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: 30 A general duty double-throw, non-fusible, two-pole, three-wire operation. Business Impact: Enables safe, switch-based isolation of standard distribution loads with clear open/close states, reducing outage duration and improving system availability. Application: Ideal for service entrances and feeder disconnects in outdoor or industrial panels. The design supports quick commissioning and straightforward wiring, aligning with typical panel schedules and maintenance routines. Feature: Includes neutral. Business Impact: Simplifies wiring topology and reduces risk of miswiring, enabling reliable control of loads that require a neutral path. Application: Panel installations where neutral termination is mandatory or where signaling circuits share a common reference. Feature: NEMA 3R rainproof enclosure, painted galvanized steel. Business Impact: Provides weather-resistant protection for outdoor or damp environments, improving reliability and reducing weather-related failures. Application: Outdoor service entrances, rooftop enclosures, and exposed distribution boards. Feature: Compact dimensions and service-friendly footprint (9.88 in depth, 24.63 in height, 11.94 in width; 34 lb). Business Impact: Eases rack and cabinet integration, saves floor space, and streamlines installation in constrained electrical rooms. Application: Retrofit projects and new builds where space is at a premium. Feature: UL Listed and catalog notes: Suitable for service entrance use. Business Impact: Meets common compliance and procurement requirements, accelerating approval cycles and reducing risk during audits. Application: Regulatory-compliant installations across general electrical protection and distribution applications. Feature: K-Series design compatibility and standardization benefits. Business Impact: Supports consistent product families, simplifies sourcing, and reduces training time for maintenance staff. Application: Industrial automation environments leveraging Eaton’s control and protection ecosystem.
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FAQs
Yes, the DT221URK-NPS is designed for service entrance use and supports a two-pole, three-wire configuration with neutral. It operates at 240 VAC and up to 250 VDC, with a 30 A rating and non-fusible design. Wiring should follow the catalog instructions, and the included neutral simplifies circuits requiring a return path for control or signaling.
Key ratings are 30 A, two-pole, three-wire, with 240 VAC and up to 250 VDC, non-fusible meaning there is no built-in fuse in the switch. External overcurrent protection is required per system design. This configuration allows straightforward isolation of load circuits while relying on external protection devices for fault interrupting.
Yes. The DT221URK-NPS features a NEMA 3R rainproof enclosure and painted galvanized steel construction, specifically intended for outdoor and damp environments. This enclosure rating provides weather resistance, enabling reliable operation in service entrances, outdoor panels, and exposed installations.
The product is UL Listed, indicating adherence to recognized safety standards. This certification supports compliance in many regulatory environments and simplifies procurement and approval processes. When used in appropriate service entrance applications with a rainproof enclosure, it meets common industrial protection requirements.
Maintenance considerations include periodic inspection of the enclosure, connection integrity, and wiring terminations. Because it is non-fusible and UL listed, you can expect lower maintenance complexity and predictable replacement cycles. The robust NEMA 3R enclosure and sturdy galvanization contribute to longer service life, reducing downtime and lifecycle costs in outdoor or harsh environments.