Eaton CB4033T120480KGA9 Pringle bolted pressure switch - UL
Part Number: CB4033T120480KGA9
Quick Summary
The Eaton CB4033T120480KGA9 bolted pressure switch is a high-current safety device for industrial power distribution. Engineers often face mis-trips and unclear fault statuses that drive downtime; this unit’s interlock, three-on lights, and fault-detection options help operators confirm trips quickly and safely. UL Listed with NEMA 1, 3R, 4, and 12 ratings, plus fusible protection, it meets essential safety and enclosure standards. Designed for top-feed, three-pole installations, it supports 4000A at 480V while integrating with 120V control logic, simplifying wiring and control power. The result is improved reliability, easier maintenance, and regulatory compliance across demanding industrial environments.
Product Information
Extended Description
CB4033T120480KGA9 Eaton: Eaton pringle bolted pressure contact switch,Interlock, 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
CB4033T120480KGA9
UPC
782116949816
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 (trips switch)
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 - CB4033T120480KGA9
Feature: High-current capability delivers 4000A at 480V. Business Impact: Reduces the number of devices needed for large feeders and simplifies protection schemes, lowering installation and maintenance costs. Application: Main feeder protection in distribution panels and motor control centers. Feature: Interlock with three normally-on lights for clear trip indication. Business Impact: Improves operator awareness and safety, minimizing misoperation and downtime. Application: Critical process lines and safety interlock zones. Feature: Top feed with three-pole, three-wire configuration. Business Impact: Streamlines wiring, reduces cross-connecting errors, and improves compatibility with existing Eaton switching devices. Application: Industrial switchgear where top-fed protection is standard. Feature: Optional Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, and Auxiliary Contact Provisions. Business Impact: Enhances diagnostics and protective coverage, supporting compliance and faster fault resolution. Application: Systems requiring enhanced fault detection and control options. Feature: NEMA ratings (1, 3R, 4, 12) and Fusible protection. Business Impact: Enables rugged installation in diverse environments while ensuring coordinated protection. Application: Harsh industrial environments and protected enclosures.
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FAQs
CB4033T120480KGA9 is designed for top-feed, three-pole installations with three wires. When wiring, ensure the control circuit is powered at 120V and that the 480V system connections align with the three-pole configuration. Use the interlock and trip indicators to verify correct operation during commissioning, and follow Eaton installation notes for proper enclosure and grounding.
This switch provides a 4000A amperage rating at 480V system voltage with 120V control voltage. It supports fusible protection and includes an interlock with trip indication. It is UL Listed and rated for NEMA 1, 3R, 4, and 12 enclosures, making it suitable for a range of industrial environments and providing reliable protection against faults.
Yes. The catalog discusses Optional Ground Fault Relay and Ground Fault provisions, along with features like Blown Fuse Detection and Auxiliary Contact Provisions. In practice, adding ground fault protection improves safety by detecting feeder faults early, enabling faster isolation and reducing the risk of dangerous fault currents in large switchgear installations.
CB4033T120480KGA9 carries UL Listed certification and is compatible with multiple NEMA enclosure ratings: NEMA 1, NEMA 3R, NEMA 4, and NEMA 12. These certifications ensure compliance with safety and enclosure requirements in diverse industrial settings, supporting regulatory alignment and safer operation in harsh environments.
The unit’s rugged construction, high-current capability, and integrated fault-interlock features reduce downtime by delivering clearer trip status and faster fault isolation. Maintenance benefits include fewer component counts in large feeders, easier diagnostics with optional ground fault and fuse-detection options, and longer service intervals when used in compliant, well-enclosed installations.