Eaton CB3033T120480KAX Pringle bolted switch - UL Listed
Part Number: CB3033T120480KAX
Quick Summary
Eaton CB3033T120480KAX is a high-current, three-pole bolted switch designed for switchgear and motor control centers. Operators and engineers often wrestle with reliable protection under heavy loads, frequent fuse changes, and unexpected downtime; this model addresses those challenges with a robust trip mechanism and interlock features. UL Listed certification plus strong NEMA ratings (NEMA 1, 3R, 4, 12) support regulatory compliance in harsh environments, while optional ground fault relay, blown fuse detection, and auxiliary contact provisions enhance diagnostics and control. Built to integrate with Eaton’s Switching Devices portfolio, it delivers dependable protection, scalable expansion, and reduced maintenance cycles across 480V distribution systems.
Product Information
Extended Description
CB3033T120480KAX Eaton: Eaton pringle bolted pressure contact switch,Interlock, BFD with no lights (trips switch),3000A,120V,Top feed,No ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB3033T120480KAX
UPC
782116950942
Product Length/Depth
22.5 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
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, BFD with no lights (trips switch)
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 - CB3033T120480KAX
The CB3033T120480KAX supports up to 3000A with a 480V system voltage and a 120V control voltage, delivering high-current reliability while enabling safe operator control and fast clearance of faults. This combination reduces nuisance trips and improves uptime in critical applications such as switchgear and motor control centers, where precise coordination with protection schemes matters. The top feed fuse configuration and three-pole construction simplify wiring, enable compact layouts, and speed installation, which translates to lower field labor costs and faster project timelines. Interlock and BFD with no lights provide clear fault signaling and safer maintenance windows, reducing risk during servicing. UL Listed with versatile NEMA ratings ensures regulatory compliance and durable performance in varied environments; optional Ground Fault Relay, Blown Fuse Detection, Kirk provisions, and auxiliary contacts enhance safety, diagnostics, and future proofing. Designed for Eaton’s ecosystem, it offers straightforward compatibility with existing protection relays and control circuits while supporting single-phase protection configurations when needed.
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FAQs
Prepare the panel by confirming a top-feed fuse arrangement and three-pole wiring. Connect each line to the corresponding phase terminals, install the fusible elements as specified, and mount the switch securely. Configure the interlock and any optional auxiliary contacts or Kirk provisions. Verify control wiring at 120 V, ensure 480 V system connections are correctly rated, and test the charge-before-close sequence to confirm safe operation before commissioning.
The device is designed to handle 3000A with a 480V system voltage and a 120V control circuit, providing robust protection for heavy loads. Its three-pole, fusible construction supports coordinated protection schemes, while the interlock and charge-before-close mechanism enhance operator safety. The UL Listed rating and specified NEMA compatibility ensure dependable performance in industrial environments from light to severe duty.
Yes, CB3033T120480KAX is UL Listed. It supports NEMA 1, NEMA 3R, NEMA 4, and NEMA 12 enclosures, covering indoor, weather-protected, and harsher environments. This combination helps meet common electrical codes for switchgear and motor control centers, simplifying acceptance testing and reducing compliance risk during audits.
Maintenance follows Eaton’s policy with a one-year warranty from installation or eighteen months from shipment, whichever occurs first. The unit’s optional features—Ground Fault Relay, Blown Fuse Detection, auxiliary contacts, and Kirk provisions—enable proactive diagnostics and remote signaling, reducing unplanned downtime and enabling faster fault isolation and service activity, which lowers total cost of ownership over time.
This switch is typical in large switchgear assemblies, motor control centers, and high-current distribution panels in industries such as manufacturing, mining, and process plants. Its high-current rating, top-feed convenience, and UL/NEMA compliance make it suitable for rugged environments requiring robust protection, reliable tripping, and compatibility with Eaton’s protection platform for scalable, maintainable power distribution.