Eaton CB4033T120480KNF Pringle pressure switch - UL Listed
Part Number: CB4033T120480KNF
Quick Summary
Eaton CB4033T120480KNF is a high-capacity pressure switch designed for industrial power distribution and motor control. In harsh plant environments, downtime due to mis-wiring, ground faults, or improper protection hooks costs time and money. UL Listed certification accompanies the unit, and its compatibility with NEMA 1, 3R, 4, and 12 enclosures supports rugged installations. For top-feed, three-wire systems with non-fusible protection, it ensures consistent operation under peak demand. By integrating with common control schemes and optional sensing, it helps meet safety, regulatory, and uptime goals.
Product Information
Extended Description
CB4033T120480KNF Eaton: Eaton pringle bolted pressure contact switch,Interlock, non-fused,4000A,120V,Top feed,No ground fault,480V,Three-pole,Three-wire,Non-fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB4033T120480KNF
UPC
782116949892
Product Length/Depth
17 in
Product Height
28 in
Product Width
40 in
Product Weight
390 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
OPTIONAL Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, Kirk Provisions, Auxiliary Contact Provisions, AVAILABLE.
Feed type
Top
Fuse configuration
Top feed
Ground
No ground fault
Number Of Poles
Three-pole
Number of wires
3
Switch type
Electrical trip with charge-before-close mechanism
Type
Pringle bolted pressure contact switch
Amperage Rating
4000A
Control voltage
120 V
NEMA rating
NEMA 1, NEMA 3R, NEMA 4, NEMA 12
Protection
Non-fusible
System voltage
480 V
Voltage - max
480 V
Voltage rating
480 V
Special features
Interlock, non-fused
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB4033T120480KNF
Feature → Business Impact → Application: Amperage and voltage ratings deliver robust capacity for large feeders, reducing fuse changes and unplanned outages in manufacturing lines; applicable to switchgear and MCCs where reliability matters. Feature → Business Impact → Application: Top-feed, three-pole, non-fusible protection simplifies wiring during panel upgrades and new builds, cutting installation time and improving safety in metal fabrication and process facilities. Feature → Business Impact → Application: Optional ground fault relay, blown fuse detection, auxiliary contacts, and Kirk provisions enable tailored protection schemes, lowering maintenance costs and speeding commissioning in food and beverage, chemical, and mining plants. Feature → Business Impact → Application: NEMA enclosure compatibility (1, 3R, 4, 12) and UL Listing ensure compliant installation across indoor and rugged environments, reducing compliance risk and warranty claims. Feature → Business Impact → Application: Interlock and charge-before-close mechanisms improve operator safety and reduce misoperations during startup in automated lines and packaging systems. Feature → Business Impact → Application: The heavy-duty 4000A / 480V ratings support long-term reliability, delivering measurable uptime gains and lower spare-part consumption in heavy electrical installations. Feature → Business Impact → Application: Integrator-friendly topology with three wires and top-feed minimizes rewiring and accelerates field service in large-scale facilities, improving total cost of ownership for OEMs. Feature → Business Impact → Application: Real-world performance insights from utilities and OEMs highlight improved impedance handling, surge tolerance, and maintenance predictability in mining, power generation, and material handling sectors.
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FAQs
CB4033T120480KNF is a three-pole, top-feed, non-fusible switch designed for 480V systems with 120V control. Ensure your enclosure is UL-listed and matches the NEMA ratings (1, 3R, 4, 12). Verify conductor gauge and terminal type, and plan for optional ground fault relay or blown fuse detection if required to meet your protection strategy.
This model delivers 4000A amperage with a 480V system voltage and 120V control voltage. It is non-fusible with a three-pole configuration and a charge-before-close mechanism. Optional features include ground fault relay, blown fuse detection, and auxiliary contacts to support expanded control schemes in complex installations.
Yes. The CB4033T120480KNF is built for MCCs, switchgear, and large feeders, combining high current capability with rugged NEMA-rated enclosures. Its top-feed, three-wire design simplifies wiring in compact spaces, while UL Listing and optional protections help meet safety, reliability, and uptime goals across manufacturing and processing environments.
UL Listed certification validates safety compliance for industrial applications. It supports NEMA 1, 3R, 4, and 12 enclosures, enabling use in indoor and moderate outdoor environments. For stricter areas, consult the installer and consider additional protective devices per system requirements to ensure ongoing compliance.
Maintenance benefits arise from non-fusible protection and optional diagnostic features that simplify troubleshooting, reduce downtime, and extend service life. The 4000A/480V ratings tolerate surge events, while interlock and charge-before-close improve operator safety. Over a typical project, this reduces field service calls, lowers spare-part costs, and delivers a favorable total cost of ownership.