Eaton CB3033B120480GR5 Pringle bolted pressure contact switch - UL Listed
Part Number: CB3033B120480GR5
Quick Summary
Eaton CB3033B120480GR5 bolted pressure contact switch provides high-current protection for large switchgear and motor control centers. Engineers often struggle with reliable single-phase protection and precise capacitor-trip coordination in demanding industrial environments. This UL Listed, three-pole design supports NEMA 1, 3R, 4 and 12 enclosures, delivering rugged performance across challenging installations. The combination of bottom-feed construction, fusible protection, and SPVR capability aligns with modern power-distribution standards while enabling scalable protection across feeders and MCCs. Choose this solution to simplify compliance, reduce maintenance, and improve system uptime in your low-voltage power distribution panels.
Product Information
Extended Description
CB3033B120480GR5 Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR),3000A,1NO-1NC,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB3033B120480GR5
UPC
782116951666
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
1 NO-1 NC
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
Single-phase voltage relay with capacitor trip device (SPVR)
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 - CB3033B120480GR5
Feature: 3000A amperage rating with 480 V system voltage. Business Impact: Enables protection of large feeders and reduces fuse replacements, lowering operating costs. Application: Large switchgear and motor control centers demanding high current handling. Feature: 120 V control voltage and 1NO-1NC contact configuration. Business Impact: Simplifies control wiring and enables coordinated control schemes for reliability. Application: Industrial panels requiring quick, accurate tripping with minimal control wiring complexity. Feature: Bottom feed and fusible protection with ground fault option. Business Impact: Eases installation, improves fault isolation, and supports enhanced safety in grounded systems. Application: Bottom-fed, three-pole protection schemes in MCCs and switchboards. Feature: SPVR capacitor trip device and optional Ground Fault Relay. Business Impact: Accelerates fault clearance, reduces nuisance trips, and supports meeting safety and reliability requirements. Application: Systems with capacitor-start motors and sensitive protection needs. Feature: UL Listed with NEMA 1, 3R, 4, 12 compatibility. Business Impact: Ensures regulatory compliance and rugged durability across diverse environments. Application: Harsh industrial facilities, outdoor-rated enclosures, and clean-room adjacent areas. Feature: Optional auxiliary and Kirk provisions. Business Impact: Facilitates scalable control architecture and easy retrofit for evolving protection schemes. Application: Power distribution upgrades and maintenance-friendly installations.
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FAQs
Installation in bottom-fed enclosures requires aligning the three-pole, 1NO-1NC contact arrangement with the switchgear feed points, securing the device to the chassis, and routing control wiring to the 120 V circuit. Ensure proper clearance for the 22.5 in depth and 40 in width, use the fusible bottom-feed configuration, and observe safety standards during isolation and testing.
The CB3033B120480GR5 is rated for 3000A with a 480 V system voltage and 120 V control voltage. It features a three-pole, 1 NO-1 NC contact configuration, fusible protection, and is compatible with NEMA 1, 3R, 4, and 12 enclosures, making it suitable for demanding switchgear, MCCs, and distribution panels.
Yes, the CB3033B120480GR5 is UL Listed. It supports rugged environments through its NEMA ratings (1, 3R, 4, 12), enabling dependable performance in indoor, outdoor, and harsh industrial environments. Optional features such as ground fault relay and auxiliary provisions expand safety and control options for various installation scenarios.
This switch is ideal for motor control centers, large switchboards, and distribution panels requiring high-current protection and reliable single-phase fault management. The SPVR capacitor trip device and bottom-feed design support efficient tripping coordination, while fusible protection provides a fail-safe approach in critical power distribution circuits.
Eaton provides a one-year warranty from installation or eighteen months from shipment, whichever occurs first, under policy 25-000. For technical support, customers can access Eaton’s specification sheets, catalog notes, and optional accessories such as ground fault relays and auxiliary contacts to tailor protection schemes to their specific installation needs.