Eaton CB4033T120480KGAX Bolted contact switch - UL Listed
Part Number: CB4033T120480KGAX
Quick Summary
Eaton CB4033T120480KGAX is a bolted pressure contact switch used for motor control and safety interlock in industrial power systems. Maintenance downtime and wiring errors are common with high-current switching assemblies, but this unit’s top-feed configuration and interlock features help reduce install time and miswiring risk. With UL Listed certification and broad NEMA compatibility, it supports reliable operation in demanding environments. The combination of 480 V system voltage and 120 V control voltage addresses both primary and control power needs, enabling safer, simpler integration into existing switchgear. This delivers tangible business value by improving uptime, enabling compliant protection strategies, and simplifying future upgrades with Eaton switching devices.
Product Information
Extended Description
CB4033T120480KGAX Eaton: Eaton pringle bolted pressure contact switch,Interlock, BFD with no 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
CB4033T120480KGAX
UPC
782116949823
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 no 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 - CB4033T120480KGAX
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: The CB4033T120480KGAX delivers 4000A amperage rating to support heavy motor starts and high-load switching, reducing thermal stress on feeders and extending component life in industrial plants. This capability translates to lower maintenance costs and fewer nuisance trips in production lines that demand consistent power delivery. Application: Large-machinery installations and machine cells in manufacturing lines benefit from reliable, high-current switching in a compact, top-fed enclosure, streamlining wiring and integration with existing switchgear. Feature → Business Impact → Application: Three-pole, three-wire topology simplifies interlocking with protective relays and control transformers, improving safety and enabling straightforward compliance with electrical codes. Application: Safe plant startup sequences and controlled shutdowns in automation cells. Feature → Business Impact → Application: Interlock and BFD with no lights provide fail-safe protection without nuisance indicators, reducing operator confusion while ensuring rapid fault isolation. Application: Hazard-zone equipment and vital process lines requiring visible safety logic. Feature → Business Impact → Application: Optional Ground Fault Relay and Blown Fuse Detection offer enhanced fault detection, improving diagnostic visibility and enabling proactive maintenance. Application: Mission-critical distribution panels and safety interlocks with fast fault identification. Feature → Business Impact → Application: Top feed and fusible protection simplify installation and replacement, reducing labor time during maintenance outages. Application: Retrofit projects and new builds where quick, reliable protection is essential. Feature → Business Impact → Application: Compliance-ready with UL Listed and broad NEMA ratings (1, 3R, 4, 12), ensuring suitability across enclosures and harsh environments. Application: Industrial enclosures in harsh environments like wash-down areas and dusty facilities. Feature → Business Impact → Application: 480 V system voltage and 120 V control voltage support both main power and control circuits in a single device, reducing interconnects and potential failure points. Application: Control panels and motor control centers with centralized protection.
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FAQs
CB4033T120480KGAX uses a top feed configuration with three poles and three wires, designed for straightforward installation in existing switchgear. It supports fusible protection and can accommodate optional Ground Fault Relay and auxiliary contact provisions. When wiring, ensure control power transformer integration for ground fault protection is properly routed, and confirm enclosure compatibility with NEMA ratings 1, 3R, 4, and 12 for your environment.
The switch is rated at 4000A amperage with a 480V system voltage and 120V control voltage. It is a three-pole, three-wire device with fusible protection and a charge-before-close mechanism. It supports top-feed configuration and interlock features, making it suitable for high-current motor control and safety applications in demanding industrial settings.
Yes. With NEMA ratings of 1, 3R, 4, and 12, the CB4033T120480KGAX is suitable for a range of motor control centers and enclosure environments, including wash-down and dusty areas. The interlock and BFD features enhance safety, while fusible protection provides reliable overcurrent protection compatible with standard MCC configurations.
This switch is UL Listed, ensuring compliance with established safety standards for industrial electrical equipment. It also aligns with common enclosure ratings (NEMA 1, 3R, 4, 12) to support regulatory and installation requirements in diverse industrial environments. Optional features like Ground Fault Relay and auxiliary provisions can further support specialized safety and control needs.
The CB4033T120480KGAX offers high-current capacity (4000A) and robust protection options, reducing downtime from faults and nuisance trips. Its top-feed design simplifies installation, speeding up retrofits and new builds. The availability of optional ground fault and blown fuse detection improves fault diagnosis, enabling proactive maintenance and longer mean time between failures (MTBF) for critical processes.