Eaton CB3033B120480AX Pringle pressure switch - UL Listed
Part Number: CB3033B120480AX
Quick Summary
The Eaton CB3033B120480AX bolted pressure contact switch provides reliable motor protection in heavy-power industrial panels. Engineers often face ground-fault detection gaps, fuse coordination challenges, and space constraints when upgrading switchgear. This device ships UL Listed and supports multiple NEMA-rated enclosures, with optional ground fault relay and single-phase protection. Designed for 480 V systems with 3 poles and 3000 A capacity, it aligns with industrial automation strategies and compliance requirements. For project teams evaluating protection schemes, this switch offers quick-tripping, optional fault-detection features, and documented installation guidance. Its 480 V three-pole design and robust UL-listed construction help simplify procurement, maintenance planning, and regulatory alignment across facilities.
Product Information
Extended Description
CB3033B120480AX Eaton: Eaton pringle bolted pressure contact switch,BFD with no lights (trips switch),3000A,120V,Bottom feed,No ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB3033B120480AX
UPC
782116951819
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
3000A
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
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 - CB3033B120480AX
High current capability enables direct protection for large motors and feeders, reducing interlock complexity and wiring. This translates to faster protection and simplified replacement when faults occur, particularly in motor control centers. The CB3033B120480AX supports a 3000 A amperage rating and a 480 V system voltage with 120 V control voltage across three poles, enabling seamless integration with existing Eaton switching devices and MCCs. Bottom feed and fusible configuration optimize space within switchgear while improving fuse coordination and ease of component replacement during maintenance. NEMA ratings of 1, 3R, 4, and 12 expand enclosure compatibility for indoor and outdoor applications, reducing the need for alternative enclosures and lowering total installed cost. Optional Ground Fault Relay, Blown Fuse Detection, single-phase protection, and auxiliary contact provisions offer enhanced safety and fault visibility without custom retrofits. The practical enclosure footprint and substantial weight support robust mechanical mounting and vibration resistance in harsh environments, while the included Eaton catalog documentation accelerates procurement. By design, this switch minimizes downtime through rapid trip and reset sequences, supporting higher line uptime and predictable maintenance planning in automated facilities.
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FAQs
CB3033B120480AX is designed for bottom-feed, three-pole installations in standard switchgear footprints. Ensure enclosure supports 22.5 inch length, 32 inch height, and 40 inch width with adequate clearance for wiring, auxiliary contacts, and optional fault-detection modules. Verify UL Listed compatibility and reference Eaton catalogs for mounting provisions, torque specs, and grounding guidelines to maintain compliance and maximize uptime.
This device delivers a 3000 A amperage rating with 480 V system voltage and 120 V control voltage across three poles. It is fusible and designed for heavy-duty motor protection in switchgear and MCCs. The NEMA 1, 3R, 4, and 12 ratings enable operation in varied indoor and outdoor environments, supporting robust fault protection for high-power motors while simplifying coordination with auxiliary protection schemes.
Yes, CB3033B120480AX is engineered for 480 V three-phase systems. Its NEMA ratings (1, 3R, 4, 12) broaden enclosure compatibility from clean indoor panels to more demanding environments. Bottom-feed, three-pole design supports integration with common MCCs and distribution panels, while UL Listing ensures compliance with typical electrical installation standards and reduces integration risk.
The product is UL Listed, providing recognized safety certification for electrical devices. Its NEMA-rated construction expands suitability across indoor and outdoor installations. While CE or SIL ratings aren’t listed in the data, UL Listing combined with NEMA compatibility often aids regulatory acceptance in many regions and industries, particularly for motor protection and switchgear assemblies in industrial facilities.
Maintenance benefits include optional features like Ground Fault Relay, Blown Fuse Detection, and auxiliary contact provisions that simplify fault diagnosis and reduce reactive maintenance. With a 3000 A rating and durable enclosure options, lifecycle costs are lowered by fewer replacements and longer intervals between service events. Access to Eaton’s specification sheets and catalogs also streamlines procurement, reducing project lead times and total cost of ownership.