Eaton CB4033T120480GRA9 Bolted Pressure Switch - UL Listed
Part Number: CB4033T120480GRA9
Quick Summary
The Eaton pringle bolted pressure contact switch is a high-capacity, three-pole solution designed for reliable control of large power distribution gear. It addresses the challenge of coordinating a capacitor trip device with ground-fault protection in top-fed switchgear, reducing nuisance trips and downtime. Key certifications and conformance include UL Listed status and compatibility with NEMA enclosure ratings to ensure safe installations in demanding environments. This model delivers robust performance at 480 V with a 120 V control circuit, supporting large industrial loads while offering system-wide protection and long-term value for electrical utility and manufacturing facilities.
Product Information
Extended Description
CB4033T120480GRA9 Eaton: Eaton pringle bolted pressure contact switch,Single-voltage relay with capacitor trip device (SPVR), BFD with three on lights (trips switch),4000A,120V,Top feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB4033T120480GRA9
UPC
782116949991
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
Single-voltage relay with capacitor trip device (SPVR), BFD with three normally on lights (trips switch)
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB4033T120480GRA9
Feature → Business Impact → Application: Amperage Rating of 4000A provides a compact, single-device solution for extreme current handling, reducing the number of components and potential failure points in the switchgear. This translates to lowered maintenance costs and improved system reliability in high-demand plants and data centers. Application: Main feeder protection in heavy-industrial distribution panels. Feature → Business Impact → Application: System voltage of 480 V and control voltage of 120 V enable seamless integration with standard industrial controls, minimizing installation time and wiring complexity. Application: Large motor circuits and process lines requiring dependable protection with common control schemes. Feature → Business Impact → Application: Single-voltage relay with capacitor trip device (SPVR) and BFD with three normally on lights improves visibility of trips, accelerating fault diagnosis and restoration after events. Application: Fast, transparent protection status in switchgear assemblies. Feature → Business Impact → Application: Ground fault protection with a dedicated control power transformer enhances safety and fault isolation, reducing the risk of equipment damage during ground faults. Application: Facilities with demanding process power where ground faults must be detected quickly. Feature → Business Impact → Application: Three-pole, top-feed design and fusible protection offer rugged, field-proven configuration for harsh environments, lowering installation rework and compatibility issues. Application: New installations or upgrades in industrial plants and refineries. Feature → Business Impact → Application: Optional Ground Fault Relay, Blown Fuse Detection, and Auxiliary provisions simplify code compliance and future expansion, supporting Kirk provisions and auxiliary contact needs. Application: Retrofit projects and modular switchgear upgrades.
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FAQs
For top-feed installations, ensure proper clearance and enclosure compatibility with the three-pole, 480 V system. Verify control power transformer availability and confirm the SPVR capacitor trip device wiring to minimize nuisance trips. Use the provided Kirk provisions and auxiliary contact provisions for seamless integration into existing control schemes.
Its 4000A amperage rating supports large feeders and heavy motors, reducing the number of components required in the protection scheme. The 480V system voltage paired with a 120V control circuit simplifies integration with common industrial controls, delivering reliable protection in demanding environments.
This model is UL Listed, offering recognized safety certification for electrical equipment. It also supports NEMA ratings for enclosure compatibility (NEMA 1, 3R, 4, 12), ensuring suitable protection against environmental conditions in a variety of facilities.
Yes. The unit includes ground-fault protection with a control power transformer and a fusible protection scheme. Optional features include a Ground Fault Relay and Blown Fuse Detection to enhance fault visibility and prevention in critical power systems.
With a single high-current device, maintenance intervals shorten due to fewer components in the protection path, while improved fault visibility accelerates repair times. The integrated SPVR and optional accessories support longer mean time between failures and reduced downtime, delivering tangible return on investment for large-scale switchgear projects.