Eaton CB4033T120480A Bolted Pressure Switch - UL Listed
Part Number: CB4033T120480A
Quick Summary
Eaton CB4033T120480A bolted pressure contact switch enables high-current control in industrial power distribution. Engineers frequently contend with nuisance trips, slow fault isolation, and bulky gear that complicates maintenance and increases downtime. This unit is UL Listed and suited for NEMA 1, 3R, 4 and 12 enclosures, simplifying integration with existing switchgear and reducing retrofit risk. Designed for 480V system voltages and 3-wire, three-pole configurations, it delivers robust 4000A protection while supporting Top feed and fusible operation. In practice, customers gain reliability, easier installation, and the flexibility to add optional Ground Fault Relay, Blown Fuse Detection, or auxiliary contacts to tailor safety and control.
Product Information
Extended Description
CB4033T120480A Eaton: Eaton pringle bolted pressure contact switch,BFD with three on lights (does not trip),4000A,120V,Top feed,No ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB4033T120480A
UPC
782116950270
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
Fusible
System voltage
480 V
Voltage - max
480 V
Voltage rating
480 V
Special features
BFD with three normally on lights (does not trip)
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - CB4033T120480A
Feature: High amperage and voltage rating (4000A at 480V) allows you to consolidate protection for large loads, reducing the number of devices in your switchgear and cutting wiring complexity. Business impact: lowers total installed cost and improves reliability by minimizing points of failure. Application: ideal for main switchgear, motor control centers, and high-current distribution panels. Feature: Three-pole top-feed fusible configuration with top-feed fuse arrangement simplifies wiring and enhances fault isolation. Business impact: accelerates installation, reduces field wiring errors, and improves uptime in retrofit and new-build projects. Application: large industrial panels and plant-wide protection schemes. Feature: Electrical trip with charge-before-close mechanism improves safety by preventing close-in arcing and ensuring safe sequencing. Business impact: lowers inrush risks and protects personnel during maintenance outages. Application: demanding power distribution environments where controlled switching is critical. Feature: UL Listed with broad NEMA enclosure compatibility (1, 3R, 4, 12). Business impact: streamlines compliance, simplifies procurement, and eases integration into existing enclosures. Application: commercial and industrial facilities using standard switchgear footprints. Feature: Optional Ground Fault Relay, Blown Fuse Detection, and auxiliary contact provisions (catalog notes). Business impact: enhances fault detection, selective protection, and control flexibility without overhauling the installation. Application: safety-critical systems requiring configurable protection and monitoring.
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FAQs
CB4033T120480A is designed for large-scale industrial power distribution and motor control centers. Its three-pole, top-feed configuration supports 480V systems with fusible protection, making it ideal for main switchgear in manufacturing facilities and processing plants where high-current switching and reliable fault isolation are critical.
The charge-before-close mechanism ensures the switch is properly charged before closing contacts, reducing arcing and inrush transients. This translates to safer operation during start-up and maintenance, lower contact wear, and longer device life in high‑power distribution applications.
Yes. Catalog notes indicate optional Ground Fault Relay and Blown Fuse Detection are AVAILABLE. These features enable enhanced protection and faster fault diagnosis, helping to meet plant safety requirements without replacing the entire switch.
CB4033T120480A is UL Listed and compatible with NEMA 1, 3R, 4, and 12 enclosures. This combination supports regulatory compliance and straightforward integration into common industrial cabinet ecosystems, reducing design and installation risk in new builds or retrofits.
Key considerations include its top-feed fuse configuration for simplified wiring, three-pole three-wire arrangement for unified protection, and the option to add auxiliary contacts or safety features. The unit’s 17 in length, 28 in height, 40 in width and 390 lb weight indicate the need for proper mounting and rigging, but deliver robust, long-term reliability in exchange for reduced maintenance events.