Eaton CB3033B120480GRAX Pringle bolted pressure contact switch - UL Listed
Part Number: CB3033B120480GRAX
Quick Summary
CB3033B120480GRAX bolted pressure contact switch protects motor controls in industrial switchgear. Many projects struggle with protection coordination and nuisance trips that halt production. UL Listed certification confirms electrical safety compliance; NEMA ratings support diverse enclosures across 1, 3R, 4, and 12, and the three-pole design handles three-wire systems reliably. In addition to ground-fault monitoring and fuse protection, the device enables faster troubleshooting and lowers maintenance costs across facilities. Engineering teams gain confidence from documented performance, while procurement appreciates the integrated protection features for lifecycle cost reductions. With Eaton SPVR, bottom-feed configuration and rugged enclosure options, this model simplifies installations in both new builds and retrofits.
Product Information
Extended Description
CB3033B120480GRAX Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with no lights (trips switch),3000A,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB3033B120480GRAX
UPC
782116951659
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
Single-phase voltage relay with capacitor trip device (SPVR), BFD with no lights (trips switch)
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB3033B120480GRAX
Feature: SPVR capacitor trip device is integrated into the switch. Business Impact: delivers faster, controlled trips that reduce nuisance tripping during startup and transient faults, protecting motors and reducing unplanned downtime. Application: ideal for single-phase protection in motor control centers and panel boards where reliable timing is critical. Feature: Ground fault protection with a transformer powers auxiliary circuits while improving personnel safety and damage prevention. Business Impact: simplifies compliance reporting and minimizes false alarms in facilities with sensitive electronics. Application: manufacturing lines, processing plants, and packaging systems with critical loads. Feature: Three-pole, 3-wire bottom-feed configuration supports straightforward wiring and robust interlocking. Business Impact: reduces installation time and errors, accelerating commissioning. Application: switchgear assemblies and power distribution panels in harsh environments. Feature: Fusible protection and a 480 V system with 120 V control voltage provide clear fault isolation and easy maintenance. Business Impact: enhances selectivity and minimizes collateral outages, lowering maintenance costs. Application: large industrial installations with high fault-current potential. Feature: NEMA 1, 3R, 4, 12 enclosure compatibility plus UL Listed certification give installers freedom to place the unit in diverse environments. Business Impact: accelerates regulatory approvals and reduces enclosure-related concerns. Application: outdoor or washdown areas, industrial plants, and process lines. Feature: Optional Ground Fault Relay, Blown Fuse Detection, and Auxiliary Contact provisions offer configurability. Business Impact: tailor protection strategies to specific processes, improving uptime and diagnostic visibility. Application: retrofits and new builds needing Kirk provisions and auxiliary signaling.
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FAQs
Ensure a bottom-feed, three-wire configuration, confirm 480 V system voltage with a 120 V control circuit, and mount the unit within a NEMA-rated enclosure appropriate for the environment. Verify spare auxiliary contacts and optional provisions (Ground Fault Relay, Auxiliary Contacts) are compatible with the control scheme. Follow Eaton’s mounting guidelines for bolt-down installation and wiring clarity to reduce commissioning time.
Rated for 3000 A with a 480 V system and 120 V control voltage, it provides fusible protection and a capacitor trip device (SPVR) for rapid, controlled tripping. It supports three-pole, three-wire configurations and includes ground fault protection via an integrated transformer, delivering reliable fault isolation and enhanced safety in demanding applications.
Ideal for motor control centers, switchgear, and power distribution panels in manufacturing, processing, and packaging facilities. It is suited for environments requiring robust NEMA-rated enclosures (1, 3R, 4, 12) and reliable single-phase protection with ground fault detection, especially where spare auxiliary contacts and auxiliary signaling are needed for remote monitoring.
The switch is UL Listed, ensuring electrical safety compliance, and it aligns with NEMA enclosure ratings suitable for a range of installation environments. Optional features and Kirk provisions provide additional configurability for regulatory and safety requirements in diverse industrial settings.
Maintenance is streamlined by integrated protection features (SPVR, ground fault, fuse protection) and straightforward bottom-feed wiring, reducing downtime during servicing. The rugged enclosure and high amperage rating offer long service life under demanding loads, delivering lower lifecycle costs and a faster payback through reduced unplanned outages.