Eaton CB4033B120480KG7 Pringle bolted switch - UL Listed
Part Number: CB4033B120480KG7
Quick Summary
CB4033B120480KG7 is a high-current bolted pressure contact switch for industrial switchgear. In demanding environments, operators struggle with misoperation and downtime when protection isn't fast or reliable. UL Listed certification confirms compliance and safety, and the unit supports rugged NEMA configurations for varied enclosures (NEMA 1, 3R, 4, 12). Optional ground-fault relay and interlock features enhance fault protection and personnel safety. This combination delivers safer operation, reduced maintenance, and improved uptime for power distribution systems, while offering compatibility with bottom-feed wiring and fused protection to streamline installation and ensure regulatory alignment. Engineers can rely on this switch for dependable trip performance and straightforward service intervals.
Product Information
Extended Description
CB4033B120480KG7 Eaton: Eaton pringle bolted pressure contact switch,Interlock,4000A,2NO-2NC,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB4033B120480KG7
UPC
782116950447
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.
Contact configuration
2 NO-2 NC
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
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - CB4033B120480KG7
Feature: 4000 A amperage rating with a 480 V system voltage. Business Impact: Enables safe interruption of large fault currents, reducing equipment damage and downtime. Application: Ideal for heavy-duty feeders in manufacturing plants and energy-intensive facilities. Feature: 2NO-2NC contact configuration in a three-pole, bottom-fed chassis. Business Impact: Flexible control options support complex interlocking schemes and safe sequencing. Application: Suitable for multi-branch switchgear where both normally open and normally closed contacts are required. Feature: Fusible protection plus interlock and charge-before-close mechanism. Business Impact: Improves protection fidelity and operator safety by preventing energization during maintenance windows. Application: Essential in safety-critical power distribution and motor control centers. Feature: Ground fault possibilities and auxiliary/ Kirk provisions (catalog notes). Business Impact: Reduces nuisance trips, simplifies fault diagnosis, and supports scalable protection architecture. Application: Retrofit-ready for existing Eaton schemes and new builds requiring comprehensive fault protection. Feature: NEMA-rated compatibility (1, 3R, 4, 12) with UL Listed certification. Business Impact: Ensures enclosure versatility and regulatory compliance across environments. Application: Widely applicable in food processing, metalworking, and chemical processing facilities. Industry insight: The combination of high-current capability, interlock, and fault-detection options aligns with modern safety standards and reduces total cost of ownership by lowering downtime and maintenance complexity.
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FAQs
Plan for bottom-feed wiring to align with your panel’s bus arrangement and space constraints. Ensure the three-pole, 2NO-2NC configuration matches your control logic, and verify fusible protection is sized to protect the feeder. With interlock and auxiliary provisions, coordinate wiring with other safety devices to maintain safe, sequential energization and maintenance workflows.
The CB4033B120480KG7 offers a 4000 A amperage rating, 480 V system voltage, and 120 V control voltage. It features a three-pole design with a 2NO-2NC contact configuration suitable for complex interlocking and safe shutdown sequences. Bottom feed and fusible protection further support reliable operation and quick fault isolation in high-power applications.
Yes. The unit includes interlock capability and optional ground fault protection, which enhances safety during maintenance and operation. Its UL Listed certification and NEMA 1, 3R, 4, 12 compatibility make it appropriate for harsh industrial settings, where controlled energization and rapid fault isolation are critical to safeguarding personnel and equipment.
The CB4033B120480KG7 is UL Listed, ensuring recognized safety and performance, and it supports multiple NEMA enclosure ratings (NEMA 1, 3R, 4, 12) for versatile installation. Optional features such as ground fault relay, blown fuse detection, and auxiliary provisions allow alignment with broader protective schemes and regulatory requirements in industrial facilities.
Expected ROI comes from reduced downtime due to reliable high-current protection and safe operation, lower maintenance costs through built-in fuse protection and optional fault-detection, and easier service with interlock and auxiliary provisions. The included warranty and robust UL/NEMA compliance support long-term reliability and predictable maintenance budgeting.