Eaton KNA4C3DP21L Enclosure Climate Control - NEMA 4
Part Number: KNA4C3DP21L
Quick Summary
KNA4C3DP21L is an enclosure climate control solution for protecting electrical gear inside industrial enclosures. When moisture, dust, and heat push ratings to the limit, downtime and maintenance costs rise. This unit is UL/cUL listed and provides a NEMA 4 rating, with a durable powder-coated finish that resists corrosion in harsh environments. Designed for the Eaton B-Line series and Guardian DP21 families, it complements existing enclosures to extend life and uptime. With reliable climate-control performance and straightforward installation, it supports scalable automation projects and reduces total cost of ownership. Its compatibility with B-Line series enclosures and Guardian DP21 components simplifies procurement and installation for systems integrators, enabling faster project kickoff and fewer field surprises.
Product Information
Extended Description
KNA4C3DP21L Eaton: Eaton B-Line series enclosure climate control, NEMA 4, Powder coat, Guardian series DP21, NEMA 4 or 4x air conditioners
Product Name
Eaton B-Line series enclosure climate control
Catalog Number
KNA4C3DP21L
UPC
799038643449
Product Length/Depth
10.18 in
Product Height
21.01 in
Product Width
12 in
Product Weight
54 lb
Certifications
UL/CUL listed
Finish color
Powdercoat
Type
Guardian series DP21
Degree of protection
NEMA 4
Feature → Business Impact → Application: The enclosure climate control integrates seamlessly with Eaton B-Line and Guardian DP21 systems, delivering targeted cooling to protect sensitive drives and I/O from heat-related degradation, which translates to lower failure rates and extended equipment life in manufacturing lines and packaging operations. Application: Industrial automation cabinets and control panels in harsh environments benefit from consistent temperatures, reducing drift in sensors and controllers. Feature → Business Impact → Application: Powder-coated finish plus a UL/cUL listed build provides corrosion resistance and safety compliance, lowering maintenance costs and risk of weather-related damage in outdoor or damp indoor settings. Application: Outdoor electrical rooms and shipboard or coastal facilities. Feature → Business Impact → Application: Compact Guardian DP21 form factor with 21.01 in height, 12 in width, 10.18 in depth and 54 lb weight simplifies integration, enabling faster installation and easier retrofits in existing enclosures. Application: Retrofit projects and new builds where space is at a premium. Feature → Business Impact → Application: Compatibility with the Guardian DP21 and B-Line ecosystem reduces part proliferation and procurement complexity, delivering consistent design language and faster replacements. Application: System integrators standardizing enclosure zones across a plant. Feature → Business Impact → Application: Optional NEMA 4x air conditioner compatibility broadens protection in higher humidity or corrosive environments, improving uptime in challenging facilities. Application: Coastal plants, wash-down areas, and high-dust manufacturing lines. Feature → Business Impact → Application: Clear specifications and datasheets support predictable commissioning, enabling engineers to plan wiring, routing, and service intervals with confidence. Application: Project scoping and maintenance planning.
Get a Quick Quote for a Eaton KNA4C3DP21L
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton KNA4C3DP21L?
Enquire Now
FAQs
Yes. The KNA4C3DP21L is part of the Eaton B-Line series and Guardian DP21 family, designed to integrate with standard B-Line enclosures. It supports typical flat mounting within the guard and enclosure framework, and its dimensions (21.01 in H x 12 in W x 10.18 in D) facilitate straightforward adjacent mounting or retrofit installations in existing cabinets. For retrofit projects, confirm enclosure interior clearance and mounting hole patterns to ensure proper fit and airflow.
Key specs include Product Height 21.01 in, Width 12 in, Depth 10.18 in, and Product Weight 54 lb. The unit carries a NEMA 4 protection rating and UL/cUL listing, with a powder-coated finish for corrosion resistance. This combination supports reliable operation in dusty, damp, and light-washdown environments while meeting safety and performance standards expected in industrial control cabinets.
Ideal for automated manufacturing, packaging lines, and control panels in harsh environments where moisture, dust, or temperature fluctuations threaten electronics. The Guardian DP21 integration and B-Line compatibility make it suitable for mid- to large-scale industrial facilities, including coastal plants or washdown areas that require robust enclosure protection and dependable climate control.
The KNA4C3DP21L is UL/cUL listed and rated for NEMA 4 protection, indicating suitability for indoor or outdoor use in challenging environments. The powder-coated finish adds corrosion resistance, supporting long service life in harsh conditions. Always verify current listings and regional compliance for your specific installation site.
Regular inspection of climate-control components, airflow paths, and door seals will maintain performance. By preventing condensation and overheating, the enclosure reduces component wear, extends life, and lowers maintenance and replacement costs. Standardized integration with the B-Line/DP21 ecosystem also simplifies stocking and reduces downtime during part replacements.