Eaton CB4033B120480K Pringle bolted pressure switch - UL
Part Number: CB4033B120480K
Quick Summary
Eaton pringle bolted pressure contact switch delivers reliable interlock-based protection for high-amperage switchgear in industrial plants. Operators often contend with ground faults, fuse failures, and downtime that erode productivity and safety. This model is UL Listed and designed for NEMA 1, 3R, 4, and 12 enclosures, with optional ground-fault relay, blown fuse detection, single-phase protection, and Kirk provisions to tailor protection to your panel. With bottom feed and three-pole configuration, it supports compact layouts in large switchgear, while 480 V system voltage and 4000 A amperage accommodate demanding industrial applications. In practice, OEMs and maintenance teams gain reliability and reduced downtime by standardizing on a proven Eaton interlock solution for critical power distribution. Eaton's warranty policy adds predictable service life and support during installation and operation.
Product Information
Extended Description
CB4033B120480K Eaton: Eaton pringle bolted pressure contact switch,Interlock,4000A,120V,Bottom feed,No ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB4033B120480K
UPC
782116950508
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.
Feed type
Bottom
Fuse configuration
Bottom 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
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB4033B120480K
Feature: 4000 A amperage rating with a 480 V system voltage. Business Impact: Enables safe handling of high fault currents, reducing arc energy exposure and protecting feeders and motors. Application: Heavy industry switchgear and large motor control centers where high fault current is possible. Feature: 120 V control voltage with charge-before-close mechanism. Business Impact: Safer, sequenced switching minimizes inrush and arc flash risk during shutdown/startup. Application: Protective interlock sequences in process lines and OEM control panels. Feature: Bottom feed and bottom fuse configuration. Business Impact: Simplifies cabinet integration, saves installation time, and supports compact layouts. Application: Retrofit projects and new builds with limited panel space. Feature: Interlock with optional Ground Fault Relay, Blown Fuse Detection, and Auxiliary Provisions. Business Impact: Enhanced safety, diagnostics, and compliance with safety standards. Application: Applications requiring enhanced fault detection and modular protection options. Feature: NEMA 1, 3R, 4, 12 compatibility and fusible protection. Business Impact: Broad enclosure compatibility and robust overcurrent protection, reducing maintenance cycles. Application: Harsh industrial environments and diverse facility requirements.
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FAQs
The CB4033B120480K uses a bottom feed configuration with three poles and three wires, designed for ease of integration into standard Eaton and compatible panels. Its 480 V system voltage and 120 V control circuit align with common low- and medium-voltage architectures, while UL Listed certification provides assurance for compliant integration and proactive safety.
This model offers fusible protection with an electrical trip and charge-before-close mechanism, plus optional features such as Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, Kirk Provisions, and Auxiliary Contacts. These options support enhanced fault detection, safer sequencing, and tailored protection for process lines and critical loads.
Best-suited for high-current, heavy-duty switchgear and motor control centers in manufacturing and processing facilities. The 4000 A rating, 480 V system voltage, and NEMA compatibility enable reliable operation in demanding environments, while interlock protection and protective options help meet strict safety and uptime targets.
The CB4033B120480K is UL Listed and compatible with NEMA 1, 3R, 4, and 12 enclosures. Optional features like ground-fault protection and blown-fuse detection further support compliance with safety standards and reliability expectations in regulated industries.
The device’s robust construction, high amperage rating, and optional diagnostics reduce unplanned downtime and maintenance costs. By standardizing on an Eaton interlock solution, facilities can achieve longer service life for feeders, improved safety, and predictable maintenance cycles, delivering a favorable total cost of ownership over the equipment’s lifecycle.