Eaton CB3033B120480KG Pringle bolted switch - UL Listed
Part Number: CB3033B120480KG
Quick Summary
CB3033B120480KG is a bolted pressure contact switch designed for robust industrial power control and motor protection. Engineers often struggle with reliable fault protection and seamless integration for large feeders in tight spaces. UL Listed for safety, it carries NEMA ratings 1, 3R, 4 and 12 and offers fusible protection to meet harsh plant environments. As part of Eaton's low-voltage switching devices, it pairs with standard control transformers and available interlock, ground fault, and auxiliary contact options to deliver uptime, simplified procurement, and scalable protection across plant lines. This combination supports faster commissioning and long-term maintenance cost reductions.
Product Information
Extended Description
CB3033B120480KG Eaton: Eaton pringle bolted pressure contact switch,Interlock,3000A,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB3033B120480KG
UPC
782116899319
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
Interlock
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB3033B120480KG
Feature: Three-pole, three-wire design with a 480 V system voltage and a 3000 A amperage rating. Business impact: This combination delivers high-current switching with a robust interrupt capacity, minimizing arcing wear and unplanned outages. Application: Ideal for large motor starters, switchgear, and panelboards in heavy industrial environments.Feature: Bottom feed fuse configuration and ground fault with control power transformer. Business impact: Simplifies wiring, improves safety through early fault detection, and supports reliable auto-restart. Application: Grounded protection schemes in machine rooms and process lines.Feature: Interlock capability and auxiliary contact provisions (optional) with Kirk provisions available. Business impact: Enhances safety interlocks and monitoring options for diagnostics and remote signaling. Application: Safe access in maintenance bays, safety interlocked doors, and panel assemblies.Feature: UL Listed certification and NEMA ratings 1/3R/4/12, plus fusible protection. Business impact: Meets safety and environmental requirements across regions, reducing compliance risk. Application: Rugged enclosure environments in manufacturing, chemical processing, and metals facilities.Feature: Optional ground fault relay and auxiliary options. Business impact: Improves fault detection and system diagnostics, lowering downtime and enabling proactive maintenance. Application: Plant-wide protection schemes with transformer-fed control power for consistent operation.
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FAQs
When installing CB3033B120480KG in a new switchgear panel, verify an appropriate bottom-feed configuration and clear access for three-pole wiring. Confirm control voltage compatibility at 120 V and ensure fusion protection is selected for the anticipated fault current. Plan for mounting hardware compatible with UL-listed enclosures and space for interlock or auxiliary contacts if required.
CB3033B120480KG delivers a three-pole, three-wire design rated at 3000 A with a 480 V system voltage, enabling robust switching for large motors and feeders. Its fusible protection and interlock capability reduce arc exposure and improve maintenance window predictability. The unit’s NEMA 1/3R/4/12 compatibility supports use in demanding industrial environments.
Yes. The CB3033B120480KG is UL Listed for safety and features NEMA ratings including 1, 3R, 4, and 12, ensuring rugged enclosure protection. Optional features such as Ground Fault Relay, auxiliary contacts, and Kirk provisions further support compliance with safety and control-system requirements in regulated environments.
Ground fault provisions detect imbalance between conductors, enabling rapid fault isolation and protecting personnel. Interlock options prevent accidental contact with energized components during servicing. Combined, these features reduce unplanned downtime, improve maintenance safety, and simplify commissioning by enabling safer access and diagnostics within switchgear assemblies.
ROI comes from increased uptime due to high-current capacity, reduced maintenance downtime via ground fault and auxiliary options, and streamlined procurement through a UL-listed, rugged solution. While initial enclosure and wiring costs may be higher, long-term savings accrue from safer maintenance, fewer unscheduled outages, and easier integration with standard control power transformers in plant-wide protection schemes.