Eaton CB3033B1204807 Pringle bolted pressure switch - UL
Part Number: CB3033B1204807
Quick Summary
The Eaton CB3033B1204807 is a high-capacity bolted pressure contact switch for industrial power distribution. Engineers frequently struggle with reliable high-current switching in 3-phase, 480 V networks, especially when protection coordination and maintenance ease are at stake. UL Listed certification and compatible NEMA ratings — including 1, 3R, 4 and 12 — provide enclosure flexibility and regulatory peace of mind. Designed for fusible protection with bottom-feed wiring and 2NO-2NC contacts, the CB3033B1204807 helps modern plants reduce downtime and simplify upgrades. With a robust 430 lb chassis and comprehensive catalog options, this switch supports scalable, serviceable power distribution in manufacturing and processing facilities.
Product Information
Extended Description
CB3033B1204807 Eaton: Eaton pringle bolted pressure contact switch,3000A,2NO-2NC,120V,Bottom feed,No ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB3033B1204807
UPC
782116951826
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.
Contact configuration
2 NO-2 NC
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
480 V
Voltage - max
480 V
Voltage rating
480 V
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB3033B1204807
Feature → Business Impact → Application: High-current capacity and 2NO-2NC contact configuration deliver reliable switching for large motors and feeders, reducing the need for multiple lower-capacity devices and improving protection coordination in critical circuits such as motor control centers and distribution panels. This enables tighter fault isolation, faster maintenance, and lower total cost of ownership in industrial facilities. Application: main switchgear, large manufacturing lines, and heavy-duty power distribution networks. Feature → Business Impact → Application: Fusible protection with 480 V system voltage and 120 V control voltage provides robust overcurrent protection and straightforward control wiring, supporting safety compliance and predictable shutdown sequencing during faults. Application: plant-wide protection schemes and system upgrades. Feature → Business Impact → Application: Bottom-feed, three-wire, three-pole design with no ground fault simplifies installation and wiring integrity, reducing field wiring mistakes and improving enclosure cleanliness. Application: retrofit projects and new installations in compact mechanical rooms. Feature → Business Impact → Application: UL Listed and NEMA 1, 3R, 4, 12 compatibility ensures versatile enclosure integration and regulatory compliance, minimizing design constraints during plant expansion. Application: retrofit and new builds in harsh industrial environments. Feature → Business Impact → Application: Optional Ground Fault Relay, Blown Fuse Detection, and Auxiliary Contact Provisions extend protection and diagnostic capabilities, enabling predictive maintenance and faster fault diagnosis in automated lines. Application: safety circuits, maintenance programs, and smart industry deployments. Feature → Business Impact → Application: Durable construction and warranty support minimize downtime risk in mission-critical applications, delivering long-term reliability for capital-intensive facilities. Application: continuous operation in manufacturing, processing, and energy-intensive industries.
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FAQs
Yes. The CB3033B1204807 is designed for high-current, three-pole installations in industrial power distribution. With bottom-feed wiring and a three-wire configuration, it integrates cleanly into modern switchgear, MCCs, and large power panels while maintaining compliant clearances and safe fault isolation.
2NO-2NC indicates two normally open and two normally closed contacts, giving flexible control and signaling options. This configuration supports simultaneous control and feedback circuits, enabling precise sequencing and interlocking in motor control centers and distribution panels.
Absolutely. The CB3033B1204807 is rated for 480 V systems with a 3000 A amperage rating, making it suitable for large motors and feeders in heavy industrial environments, while maintaining safe operation and reliable protection coordination.
The unit is UL Listed and compatible with multiple NEMA enclosures (NEMA 1, 3R, 4, 12), which supports widespread regulatory compliance and flexible enclosure selection for diverse facilities and climates.
Optional features include Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, Auxiliary Contact Provisions, and Kirk provisions. These options improve fault detection, selective protection, and diagnostic capabilities, reducing downtime and extending asset life.