Eaton CB3033B120480GAO Pringle bolted switch - UL Listed
Part Number: CB3033B120480GAO
Quick Summary
Eaton pringle bolted pressure contact switch protects electrical systems in industrial switchgear. Engineers often battle nuisance trips, downtime, and wiring complexity during maintenance. This unit carries UL Listed safety certification and strong NEMA ratings for harsh environments. Bottom-feed, bottom-fuse design simplifies installation in tight spaces, while optional auxiliary contacts extend control and diagnostics. The combination of robust construction, high current capability, and fusible protection supports 480 V systems up to 3000 A. Designed for demanding applications, it remains suitable for low-voltage power distribution in packaging, heavy manufacturing, and process industries. This translates to safer operations, improved system reliability, and measurable cost savings across projects.
Product Information
Extended Description
CB3033B120480GAO Eaton: Eaton pringle bolted pressure contact switch,BFD with three off lights (does not trip),3000A,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB3033B120480GAO
UPC
782116951697
Product Length/Depth
22.5 in
Product Height
32 in
Product Width
40 in
Product Weight
430 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
Bottom
Fuse configuration
Bottom feed
Ground
Ground fault with control power transformer
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
3000A
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 off lights (does not trip)
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB3033B120480GAO
Three-pole bolted pressure switch delivers 3000 A at 480 V with 120 V control and fusible protection. Business impact: supports large motor loads with reliable control, reducing nuisance trips and unplanned downtime in industrial facilities. Application: ideal for motor control centers and high-current feeders in heavy manufacturing, packaging lines, and process plants. Bottom-feed and fuse configuration simplify wiring in space-constrained switchgear, accelerating installation and serviceability. This design minimizes field rewiring time and lowers commissioning costs. Charge-before-close mechanism provides safe energization, reducing arc flash risk and improving control reliability in protection schemes. Application-ready for protective relays and interlocks in demanding environments. Optional ground fault relay, blown fuse detection, and auxiliary contact provisions extend diagnostic capabilities and fault isolation, enhancing uptime and maintenance planning. Weight and enclosure compatibility are balanced for rugged industrial use, with UL Listed certification supporting compliance. The design supports low-voltage power distribution needs with robust environmental tolerance, meeting NEMA 1, 3R, 4, and 12 requirements. Industry professionals will appreciate the ease of retrofit and integration with kirk provisions, offering a practical path to upgrade legacy systems without sacrificing safety or performance. Warranty terms provide confidence in long-term reliability for ongoing plant operations.
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FAQs
Yes. The CB3033B120480GAO is designed for bottom-feed installation with a bottom fuse configuration, simplifying wiring in compact switchgear enclosures. Its dimensions (approximately 22.5 in depth, 32 in height, 40 in width) and three-pole, three-wire configuration fit typical low-voltage motor control and distribution assemblies. For retrofit projects, verify cabinet clearance and ensure mounting aligns with standard bolt patterns and control power transformer placement.
The unit is rated for 3000 A at a system voltage of 480 V, with a 120 V control voltage. It provides fusible protection and a three-pole configuration, making it suitable for high-current feeders and interrupting circuits in industrial power distribution. These specs support reliable protection for large motors and critical loads while aligning with common NFPA and UL expectations.
Industries with demanding high-current, low-voltage distribution benefit most, such as heavy manufacturing, packaging, and process industries. The three-pole design, bottom-feed configuration, and optional ground fault features support robust protection in motor control centers, switchgear assemblies, and plant-wide protection schemes. The enclosure ratings (NEMA 1, 3R, 4, 12) extend applicability to environments with dust, moisture, and corrosive exposure.
The CB3033B120480GAO carries UL Listed certification, indicating compliance with recognized safety standards for electrical equipment. It also supports multiple NEMA enclosure ratings (1, 3R, 4, 12), informing suitability for various environmental conditions. When selecting for regulated facilities, confirm local electrical codes and coordination with protection relays and auxiliary devices to maintain compliance.
Warranty is Eaton policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. Regular maintenance should focus on inspecting grounding, control wiring, and auxiliary provisions, especially if optional ground fault or blown fuse detection features are installed. The robust design and high-current capability help reduce unplanned downtime, improving overall return on investment in critical power systems.