Eaton CB4033T120480KAX5 Pringle Bolted Pressure Contact Switch - UL Listed
Part Number: CB4033T120480KAX5
Quick Summary
Eaton CB4033T120480KAX5 is a bolted pressure contact switch for high-current control in industrial motor circuits. Engineers often struggle with reliable fault protection and safe interlocks within rugged switchgear, leading to unnecessary downtime and maintenance. UL Listed protection paired with compatible NEMA 1/3R/4/12 enclosures helps ensure safety and reliability in harsh environments, while fusible protection adds a critical safety layer. With a 1NO-1NC configuration, top-feed wiring, and a three-pole design, the device supports compact panel layouts and straightforward installation. In practice, this translates to reduced spare parts, faster commissioning, and predictable performance in heavy-duty applications such as process lines and power distribution. This solution aligns with industry standards for industrial control and supports modernization efforts in critical facilities.
Product Information
Extended Description
CB4033T120480KAX5 Eaton: Eaton pringle bolted pressure contact switch,Interlock, BFD with no lights (trips switch),4000A,1NO-1NC,120V,Top feed,No ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB4033T120480KAX5
UPC
782116949915
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.
Contact configuration
1 NO-1 NC
Feed type
Top
Fuse configuration
Top feed
Ground
No ground fault
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 - CB4033T120480KAX5
Feature: 4000A amperage rating with a three-pole, 1NO-1NC contact configuration. Business Impact: Enables reliable high-current switching for large motors and heavy loads, reducing contact fatigue and maintenance intervals. Application: Ideal for switchgear and motor starter assemblies in industrial facilities. Feature: Top feed fuse configuration and top-feed wiring. Business Impact: Simplifies wiring topology and improves serviceability in cramped electrical cabinets. Application: Suitable for retrofit projects and new installations where wiring access is at the top of the enclosure. Feature: Interlock with BFD (blown fuse detection) and no lights trip indication. Business Impact: Enhances machine safety by ensuring safe shutdown behavior and easier fault diagnosis. Application: Used in safety-critical control panels for conveyors, pumps, and presses. Feature: 480V system voltage and 120V control voltage with three-wire, three-pole design. Business Impact: Supports standardized control circuits and reduces conductor count while delivering robust protection. Application: Common in medium-voltage motor control centers and process line controls. Feature: Optional Ground Fault Relay, Blown Fuse Detection, and Auxiliary Contact Provisions. Business Impact: Improves fault detection and system reliability, aiding compliance with electrical safety programs. Application: Retrofit or upgrade for enhanced protection in existing installations. Feature: UL Listed certification and broad compatibility with NEMA ratings. Business Impact: Facilitates procurement and compliance in regulated environments, easing audits and panel approvals. Application: Widely used in commercial and industrial switchgear that requires proven safety credentials.
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FAQs
This model uses a top-feed fuse configuration, three-pole design, and a 1NO-1NC contact set. Plan for 480V system voltage and 120V control circuits, ensure UL Listed compliance, and verify enclosure compatibility with NEMA ratings 1/3R/4/12. Optional ground fault relay and auxiliary contacts may impact space and wiring routes.
Yes. The CB4033T120480KAX5 is UL Listed and is compatible with NEMA 1, 3R, 4, and 12 enclosures, providing safe operation in varied industrial environments and simplifying certification during panel approvals.
The switch handles up to 4000A with a 480V system voltage and 120V control voltage, configured as 1NO-1NC across three poles. It is fusible and supports optional protections such as ground fault relay and blown fuse detection to enhance fault visibility.
Ideal for high-current motor control, switchgear assemblies, and large motor starters in process lines, pumps, and conveyors. The interlock and fault-detection features help improve safety and uptime in demanding industrial settings.
Warranty follows Eaton policy 25-000: one year from installation or 18 months from shipment, whichever occurs first. Routine inspection of interlocks, fusible links, and contact wear is recommended, with optional auxiliary contacts and fault-detection features checked during preventive maintenance.