Eaton CB4033T120480KGA Pringle bolted pressure contact switch - UL Listed
Part Number: CB4033T120480KGA
Quick Summary
CB4033T120480KGA is a bolted pressure contact switch used in industrial switchgear for protective interlock and fault-detection. In high-current environments, missed fault signaling or slow trip times can drive costly downtime and safety risks. UL Listed certification ensures regulatory compliance, while its NEMA ratings—NEMA 1, 3R, 4, and 12—support reliable performance across a range of enclosures. The device supports 480 V systems with a 4000 A rating and 120 V control voltage, delivering robust protection with straightforward integration into existing electrical infrastructure. This combination helps plant teams improve safety, reduce maintenance costs, and ensure scalable protection for future expansions.
Product Information
Extended Description
CB4033T120480KGA Eaton: Eaton pringle bolted pressure contact switch,Interlock, BFD with three on lights (does not trip),4000A,120V,Top feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB4033T120480KGA
UPC
782116949809
Product Length/Depth
17 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
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
4000A
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 three normally on lights (does not trip)
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 - CB4033T120480KGA
Three-pole, top-feed design provides robust fault isolation for 480 V three-phase systems. This configuration improves reliability during high-current events and simplifies wiring coordination. It is well suited for motor control centers and large switchgear where space and safety margins matter. Interlock and BFD with three normally-on lights offer clear status indication. This feature reduces start-up risk for maintenance crews and speeds safe lockout procedures, fitting control schemes that require visible fault signaling without tripping under certain tests. Optional Ground Fault Relay, Blown Fuse Detection, and auxiliary/kirk provisions extend protection without adding hidden complexity. The business impact is enhanced safety compliance and reduced unplanned outages, especially in critical processes. Top feed fuse configuration and ground fault with control power transformer simplify wiring and coordinate protection across feeders. In practice, this supports fast fault isolation and minimizes wiring errors during installation. UL Listed and broad NEMA ratings provide regulatory comfort and durable enclosure performance in challenging industrial environments. This combination supports easier procurement, interoperability with existing Eaton components, and lower lifecycle costs.
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FAQs
Plan for a sturdy enclosure and secure mounting due to the unit’s size and weight (approximately 390 lb). Ensure adequate clearance for service access and cooling, and verify 120 V control and 480 V system wiring are correctly routed with top-feed terminology in mind. Use compatible Eaton components and follow UL Listed guidance during installation.
UL Listed certification confirms adherence to safety and performance standards for electrical equipment. The included NEMA ratings (1, 3R, 4, 12) indicate suitability for diverse enclosure environments, improving protection against dust, moisture, and corrosion and simplifying compliance in regulated facilities.
Yes. It features ground fault protection with a transformer option and can be configured with a Ground Fault Relay and Blown Fuse Detection. The device uses fusible protection, enabling coordinated protection across feeders while maintaining selectivity in fault events.
System voltage is 480 V with a control voltage of 120 V. It is rated for up to 4000 A and uses a three-pole, three-wire configuration in a top-feed layout. The switch is designed for fusible protection and supports interlock and fault-detection schemes in high-power installations.
It improves safety and reliability by delivering rapid fault isolation and clear status signaling, reduces unplanned downtime via robust protection, and simplifies procurement and integration with Eaton’s ecosystem, ultimately lowering lifecycle costs and accelerating maintenance workflows.