Eaton CB3033B120480G Bolted Pressure Switch - UL Listed
Part Number: CB3033B120480G
Quick Summary
CB3033B120480G is a bolted pressure switch for three-pole protection in industrial power distribution. Engineers often struggle to find a rugged, space-efficient protection device that safely handles 480V circuits while enabling reliable ground fault detection. UL Listed certification is included, and the unit supports compatible NEMA enclosures (NEMA 1, 3R, 4, 12) to simplify installation in varied environments. With a control power transformer and fusible protection, it reduces wiring complexity and downtime, supporting efficient switchgear protection. This makes it a strong choice for industrial automation, switchgear assemblies, and motor control centers in demanding plants.
Product Information
Extended Description
CB3033B120480G Eaton: Eaton pringle bolted pressure contact switch,With control power transformer,3000A,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB3033B120480G
UPC
782116899258
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
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 - CB3033B120480G
High amperage capability combined with robust protection translates to meaningful uptime gains for heavy electrical loads. The CB3033B120480G is rated for 3000A at a system voltage of 480V, with a 120V control voltage, enabling reliable control circuits without oversized ancillary gear. Bottom feed fuse configuration and three-pole, three-wire design simplify installation in existing panels and new builds alike, reducing installation time and potential fault points. Ground fault protection integrated with a control power transformer enhances safety and reliability, lowering maintenance costs and safeguarding critical motors and drives. The electrical trip with charge-before-close mechanism provides predictable sequencing, increasing safety in switching operations and minimizing inrush-related disturbances. Optional features like a ground fault relay and auxiliary contact provisions expand compatibility for modern protection schemes. Overall, the unit supports compliant, scalable protection in harsh industrial environments.
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FAQs
For installation, orient the unit for bottom feed and align with three-pole, three-wire configurations. Use the bottom feed fuse arrangement to simplify wiring and connect the control power transformer to establish reliable 120 V control voltage. If available, integrate optional ground fault relay or auxiliary contact provisions to match your protection scheme. Ensure enclosure compatibility with NEMA 1, 3R, 4, or 12 ratings and verify UL Listed compliance before commissioning. This setup minimizes field modifications and reduces commissioning time, helping you achieve faster fault isolation and safer operations.
Core ratings include 3000A amperage at a 480 V system voltage and 120 V control voltage. The device provides fusible protection and is NEMA-rated for multiple enclosure types (NEMA 1, 3R, 4, 12). It features a three-pole, three-wire configuration with a charge-before-close electrical trip mechanism, ensuring safe, controlled switching sequences. Ground fault protection is built into the package, with optional relay and auxiliary provisions to extend protective coverage. This combination delivers robust protection for critical power circuits while maintaining compatibility with standard switchgear architectures.
Yes, CB3033B120480G is well-suited for motor control centers and industrial switchgear. Its three-pole design, fusible protection, and ground fault capability align with MCC protection requirements. The bottom feed configuration simplifies retrofits, while the 480V system compatibility and 120V control voltage streamline integration with control circuits and drives. Optional features allow you to tailor the unit to specific protection schemes, reducing downtime and enabling quicker fault detection in demanding manufacturing environments.
The switch is UL Listed, ensuring recognized safety compliance for electrical equipment. It supports common enclosure ratings such as NEMA 1, 3R, 4, and 12, which clarifies suitable installation environments. While SIL, CE, or IP certifications are not listed in the provided data, the UL listing together with the compatible NEMA enclosure ratings provides a solid compliance footprint for many industrial applications. Always verify local regulatory requirements and any customer-specific standards during procurement.
The product carries Eaton’s standard warranty terms: 1 year from installation or 18 months from shipment, whichever occurs first, offering protection against manufacturing defects. Optional ground fault features, auxiliary provisions, and blown fuse detection can extend protection coverage with minimal incremental maintenance. The combination of a robust mechanical design, UL Listed certification, and scalable protection options supports reduced downtime, safer operation, and a favorable return on investment through improved reliability and faster fault diagnosis in high-demand facilities.