Eaton CB3033B120240AXCT Pringle bolted pressure contact switch - UL Listed
Part Number: CB3033B120240AXCT
Quick Summary
Eaton CB3033B120240AXCT is a bolted pressure contact switch designed for heavy-duty protection in industrial switchgear and power distribution. This unit handles high current with a three-pole, bottom-feed configuration to simplify wiring in compact panels. Engineers often struggle with reliable tripping and minimizing nuisance trips in demanding 240 V systems, but this device’s 3000 A amperage rating and charge-before-close mechanism help prevent misoperations. UL Listed certification supports compliance in regulated environments, while NEMA ratings for 1, 3R, 4, and 12 enclosures ensure robust protection. With optional Ground Fault Relay and auxiliary contact provisions, it adapts to evolving protection schemes and allows easier integration with control power transformers, delivering clear business value in reliability and safety.
Product Information
Extended Description
CB3033B120240AXCT Eaton: Eaton pringle bolted pressure contact switch,BFD with no lights (trips switch),,3000A,120V,Bottom feed,No ground fault,240,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB3033B120240AXCT
UPC
782116951857
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
240 V
Voltage - max
240
Voltage rating
240V
Special features
BFD with no lights (trips switch), 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 - CB3033B120240AXCT
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: The CB3033B120240AXCT delivers a 3000A amperage rating, enabling uninterrupted protection of high-load feeders in large distribution panels, reducing electrical faults and downtime for critical processes. In practice, this translates to safer startups and lower maintenance costs when used with a 240V system and 120V control voltage, supporting motor feeders and service entrances with reliable trip performance. Feature → Business Impact → Application: The three-pole, bottom-feed design simplifies field wiring and enclosure layout, shortening commissioning time and allowing quicker retrofits in existing control rooms, especially where space is constrained. Feature → Business Impact → Application: Fusible protection offers a straightforward, code-compliant overcurrent solution, while UL Listed certification ensures regulatory alignment, reducing audit risk across plant sites. Feature → Business Impact → Application: Optional Ground Fault Relay and auxiliary contact provisions provide expandable protection and controls integration, enabling phased upgrades without system downtime. Feature → Business Impact → Application: Compatibility with NEMA 1, 3R, 4, and 12 enclosures supports diverse installation environments, from clean rooms to harsh industrial spaces, improving long-term maintenance planning and asset longevity.
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FAQs
When installing CB3033B120240AXCT in a bottom-feed, three-pole arrangement, ensure correct alignment of the three input terminals, verify bus bar connections are rated for 3000A, and secure the unit within a compatible NEMA enclosure. Use appropriate control wiring for the 120 V control circuit, and plan for fusible protection as specified. The bottom-feed design simplifies conduit routing and minimizes wiring length, reducing installation time and potential fault paths.
Key ratings include 3000A amperage, 240V system voltage, and 120V control voltage. The three-pole, fusible design provides robust overcurrent protection for high-load feeders, while 240V system voltage defines the maximum line potential the switch can safely interrupt. The 120V control voltage powers the trip mechanism, enabling coordinated control with plant controls and relays.
Yes, the CB3033B120240AXCT is UL Listed, meeting essential safety and compliance standards. It is compatible with NEMA 1, 3R, 4, and 12 enclosure ratings, enabling installation across a wide range of environments from clean to harsh industrial settings. This compatibility simplifies procurement, reduces enclosure-specific engineering, and supports regulatory compliance.
The charge-before-close (CBC) mechanism ensures the switch is energized only after a deliberate pre-charge step, reducing arcing and inrush during startup. This lowers mechanical wear, minimizes electrical stress on feeders, and improves protection integrity when switching high-current loads, particularly in motor feeders and large distribution panels.
The CB3033B120240AXCT carries Eaton’s warranty policy, typically one year from installation or eighteen months from shipment, whichever occurs first. Regular maintenance includes checking for secure mounting, inspecting fusible links and contacts, verifying UL-listed components, and confirming compatibility with optional Ground Fault Relay or auxiliary contacts as your protection scheme evolves.