Eaton CB4033T120480KA Pringle bolted switch - UL Listed

Part Number: CB4033T120480KA
Manufacturer
Eaton
Part number
CB4033T120480KA

Quick Summary

The Eaton CB4033T120480KA is a bolted pressure contact switch designed for high-current motor control and feeder protection in industrial panels. Engineers often wrestle with nuisance trips, wiring complexity, and the need for quick, reliable protection in space-constrained switchgear. UL Listed certification and broad enclosure compatibility (NEMA 1, 3R, 4, 12) support compliance, while Eaton’s warranty backs lifecycle costs. With top-feed, three-pole operation and optional protective features, this switch accelerates installation, reduces downtime, and improves operator safety in demanding environments. Key features include an interlock, BFD with three normally-on lights, and optional ground-fault, single-phase protection, auxiliary contacts, and Kirk provisions. This combination helps design engineers meet safety standards, streamline procurement, and align with Eaton's published data and catalogs.

Product Information

Extended Description

CB4033T120480KA Eaton: Eaton pringle bolted pressure contact switch,Interlock, BFD with three on lights (does not trip),4000A,120V,Top feed,No ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB4033T120480KA
UPC
782116949922
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
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 three normally on lights (does not trip)
Feature: 4000A amperage rating with 480 V system voltage in a three-pole configuration. Business Impact: Enables direct protection of large motors and feeders, reducing coordination challenges and downtime in heavy-duty applications. Application: Ideal for stamping presses, large conveyors, and high-capacity motor feeds in industrial facilities. Feature: Top feed fuse configuration simplifies wiring and fault isolation. Business Impact: Eases panel design and reduces installation time, improving overall project efficiency. Application: New builds and retrofits in space-constrained switchgear where wiring simplicity matters. Feature: Interlock with BFD and three normally-on lights (does not trip). Business Impact: Improves maintenance safety and operator awareness, lowering risk of unintended energization. Application: Live-panel servicing and critical process lines where visibility matters. Feature: NEMA-rated enclosure compatibility (NEMA 1, 3R, 4, 12) and UL Listed safety certification. Business Impact: Supports compliance with industrial safety standards while enabling reliable operation in varied environments. Application: Outdoor and harsh factory environments where enclosure protection is essential. Feature: Optional Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, Auxiliary Contacts, and Kirk Provisions. Business Impact: Enables tailored protection schemes, reduces unplanned outages, and extends panel life. Application: Site-specific safety and protection strategies across diverse industries. Feature: Large physical footprint with dimensions of 17 in (D) Ă— 28 in (H) Ă— 40 in (W) and a 390 lb weight. Business Impact: Demonstrates rugged build for durable installations and stable operation in demanding environments. Application: Large switchgear cabinets and industrial installations requiring robust mounting.

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FAQs

Yes. The CB4033T120480KA is a three-pole switch designed for 480V systems with a top-feed configuration. It supports 3 wires and fusible protection, making it compatible with standard 480V industrial feeders and switchgear layouts. Always verify enclosure clearance and mounting hardware to ensure a compliant, safe installation.
The CB4033T120480KA specifies a 4000A amperage rating and a 120V control voltage. This combination supports high-current motor protection and reliable control signaling within 3-phase power systems. For coordination, plan protective devices upstream to ensure proper fault clearance and safe operation.
Yes. Its three-pole, 480V system rating and fusible protection are well-suited for high-current drives such as conveyors and stamping machines. The interlock and status indication features reduce maintenance risk, while optional protections allow customization to fit specific processes and safety requirements.
The device is UL Listed for safety compliance and offers enclosure compatibility with NEMA ratings 1, 3R, 4, and 12. This combination supports installation in varied environments, including indoor industrial spaces and harsher environments requiring robust enclosure protection.
Eaton provides a warranty under policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. Optional features such as ground-fault, blown-fuse detection, and auxiliary contacts can reduce downtime and maintenance visits, delivering lower lifecycle costs and improved return on investment.