Eaton CB3033B120480CT Pringle bolted switch - UL Listed
Part Number: CB3033B120480CT
Quick Summary
Eaton CB3033B120480CT bolted pressure switch provides high-current protection for 480V switchgear. Engineers often contend with bulky protection devices that complicate installation and maintenance; this unit integrates a control power transformer for streamlined wiring and reliable control in demanding environments. UL Listed certification, along with NEMA ratings for enclosure environments, helps meet safety and performance standards; optional features like Ground Fault Relay and Blown Fuse Detection extend protection and fault sensing. Practically, the combination of rugged construction and factory-integrated components reduces field assembly time, lowers wiring costs, and improves system reliability for large power-distribution panels in industrial facilities.
Product Information
Extended Description
CB3033B120480CT Eaton: Eaton pringle bolted pressure contact switch,With control power transformer,3000A,120V,Bottom feed,No ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB3033B120480CT
UPC
782116951789
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
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
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
With control power transformer
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB3033B120480CT
Feature: 3000A amperage rating with 480V system and 120V control voltage. Business Impact: Enables safe and direct power handling of heavy motor loads and feeders, reducing the need for intermediate subpanels and lowering total installed cost. Application: Ideal for large manufacturing lines and water treatment plants where high-current protection is critical. Feature: Three-pole, bottom-feed, fusible configuration with charge-before-close electrical trip. Business Impact: Improves arc-arc control and sequencing, enhancing personnel safety and equipment protection during switching events. Application: Suitable for harsh industrial environments demanding reliable arc suppression and coordinated switching. Feature: Built-in control power transformer. Business Impact: Simplifies control wiring and reduces panel footprint, accelerating installation and enabling compact switchgear layouts. Application: Effective in compact control panels and distributed switchgear assemblies. Feature: UL Listed and compatible with NEMA 1, 3R, 4, 12 enclosures. Business Impact: Provides proven compliance with safety standards and environmental protection, supporting regulatory audits. Application: Widely used in outdoor and harsh indoor environments across process industries. Feature: Optional Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, Kirk Provisions, Auxiliary Contact Provisions. Business Impact: Extends sensing, protection, and diagnostics without multiple field devices, lowering maintenance costs. Application: Critical for compliance in facilities requiring continuous fault detection and versatile control options.
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FAQs
Installation involves mounting the three-pole unit in a suitable enclosure with bottom-feed wiring. Use the built-in control power transformer to power control circuits and connect the 120V control supply per Eaton installation guidelines. Ensure proper clearance, secure grounding, and compliance with UL Listed requirements. If optional accessories are chosen, integrate Ground Fault Relay or auxiliary contacts as specified by the application.
Key specs include a 3000A amperage rating, 480V system voltage, 120V control voltage, three-pole configuration, bottom feed, and fusible protection. It is UL Listed and rated for NEMA 1, 3R, 4, and 12 enclosures, making it suitable for both indoor and outdoor environments in industrial settings.
Yes, the CB3033B120480CT is UL Listed, confirming safety compliance. It also supports NEMA enclosure compatibility (1, 3R, 4, 12) for environmental protection. While CE or SIL certifications aren’t listed in the provided data, the UL listing and recognized NEC compliance provide robust regulatory alignment for many industrial applications.
Catalog notes indicate optional Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, Kirk Provisions, and Auxiliary Contact Provisions are available. These accessories enable enhanced fault sensing, added monitoring, and expanded control interfaces without altering the core switch, delivering improved protection and easier integration in complex power distributions.
The unit measures 22.5 inches in depth, 32 inches in height, and 40 inches in width, with a weight of 430 pounds. This footprint suits large switchgear housings and facilitates mounting in dedicated compartments. For installation planning, ensure adequate space for service access and wiring, considering the built-in transformer and bottom-feed configuration.