Eaton CB4033B120480KG Pringle Bolted Switch - UL Listed
Part Number: CB4033B120480KG
Quick Summary
Eaton CB4033B120480KG bolted pressure contact switch protects large electrical feeders and switchgear with high-current reliability. This solution addresses the common challenge of coordinating ground fault protection, fuse coordination, and safe operation under heavy loads. UL Listed certification and robust NEMA compatibility (NEMA 1, 3R, 4, 12) support industry-compliant installations in demanding environments. By combining a rugged 4000A rating with a bottom-feed configuration and interlock capability, it delivers dependable protection while simplifying wiring and maintenance. For engineers and procurement teams, this means reduced downtime, faster commissioning, and a safer path to scalable power distribution in industrial facilities.
Product Information
Extended Description
CB4033B120480KG Eaton: Eaton pringle bolted pressure contact switch,Interlock,4000A,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB4033B120480KG
UPC
782116950454
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
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
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB4033B120480KG
The CB4033B120480KG offers a 4000A amperage rating, delivering high interrupting capacity for large feeders and motor control centers. This feature translates to improved system reliability and lower risk during peak loads, enabling more predictable maintenance windows and reduced spare-part inventories. In practice, the 480V system voltage paired with a 120V control voltage aligns with standard industrial distributions, simplifying integration with existing control power transformers and control circuits. The three-pole, 3-wire design with bottom feed and fusible protection streamlines wiring while maintaining robust fault protection; this arrangement reduces installation time and improves fault isolation in crowded switchgear cabinets. Optional ground fault relay and single-phase protection capabilities further enhance safety without complicating field retrofits. The interlock feature adds an additional safety layer during maintenance, aligning with best-practice lockout/tagout procedures and preventing inadvertent energization. These attributes collectively support compliance, faster project delivery, and measurable cost savings through reduced downtime and safer, more predictable operation.
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FAQs
Yes. The CB4033B120480KG is designed for bottom-feed, three-pole installations and pairs with standard 480V distribution panels. Its interlock option and ground fault features simplify integration into Eaton switchgear and motor control centers, while the 120V control circuit aligns with common control power transformers. Verify cabinet clearance (22.5 in depth, 32 in height, 40 in width) and ensure proper mounting provisions and Kirk/auxiliary provisions if required.
Key ratings include a 4000A amperage rating, 480V system voltage (and voltage max), and 120V control voltage. It is fusible protected and rated for NEMA 1, 3R, 4, and 12 enclosures. The three-pole, three-wire arrangement supports ground fault awareness via an optional relay, and the interlock feature enhances safe operation during maintenance or energization sequencing.
Ideal for large-scale switchgear, motor control centers, and main feeder protection in industrial facilities. It suits environments requiring robust fault protection, reliable charging before closing, and safe interlocks. Its UL Listed status and broad NEMA compatibility support uses in manufacturing, chemical plants, and infrastructure projects where high-current switching and dependable protection are critical.
The product is UL Listed and compatible with NEMA 1, 3R, 4, 12 enclosure types, ensuring compliance with common industrial safety and performance standards. Optional features such as Ground Fault Relay, Blown Fuse Detection, and Single Phase Protection extend compliance coverage for protective relays and fault-detection schemes in complex power distribution systems.
The unit’s rugged construction, interlock capabilities, and fusible protection reduce unplanned outages and simplify preventive maintenance. A one-year Eaton warranty (or 18 months from shipment, per policy) supports uptime assurance. For ROI, expect lower downtime costs due to reliable high-current switching, easier field servicing with bottom-feed design, and improved fault visibility when paired with optional ground fault and auxiliary features.