Eaton CB2533B120480AR Pringle bolted pressure switch - UL Listed

Part Number: CB2533B120480AR
Manufacturer
Eaton
Part number
CB2533B120480AR

Quick Summary

CB2533B120480AR is a bolted pressure contact switch for heavy-duty motor control. Facing 480V feeders, engineers need reliable tripping, precise fault protection, and straightforward wiring in tight spaces. UL Listed certification and wide NEMA ratings—1, 3R, 4, 12—help ensure compliance and enclosure compatibility in demanding environments. Optional Ground Fault Relay, Blown Fuse Detection, and auxiliary provisions let teams tailor protection without redesigning controls. Bottom-feed, three-pole configuration and Eaton’s warranty policy support longer service life, lower maintenance costs, and faster changeouts in large-scale switchgear installations.

Product Information

Extended Description

CB2533B120480AR Eaton: Eaton pringle bolted pressure contact switch,BFD with three off lights (trips switch),2500A,120V,Bottom feed,No ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB2533B120480AR
UPC
782116952939
Product Length/Depth
17 in
Product Height
32 in
Product Width
28 in
Product Weight
235 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
2500A
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 three normally off lights (trips switch)
Three-pole, three-wire construction enables synchronized switching on 480V motor feeders, improving protection coordination and minimizing cross-phase faults. This configuration supports robust control for large drives, conveyors, and pumps in manufacturing environments. The electrical trip with charge-before-close mechanism reduces switching transients and contact wear, boosting reliability in demanding production lines. In practice, this translates to longer contact life, fewer nuisance trips, and lower maintenance costs for panel builders and end users. Bottom feed and bottom fuse configuration simplify wiring, lead routing, and field service. The design supports straightforward panel integration and rapid retrofits in legacy systems, helping technicians install or expand power distribution with minimal downtime. UL Listed certification and broad NEMA ratings provide regulatory compliance and enclosure compatibility across industrial environments. Optional features—Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, and auxiliary provisions—let teams tailor protection without redesigning controls. With a heavy-duty footprint and electrically robust construction, CB2533B120480AR is well-suited for large switchgear and OEM equipment, supporting custom interlocks and control strategies while reducing total cost of ownership.

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FAQs

For proper installation, verify 480V three-pole wiring with three wires and bottom-feed connections. Ensure correct phase sequence, mounting clearance, and alignment within UL-listed enclosure specifications. Use appropriate torque on lugs, confirm protective fuse configuration, and integrate optional auxiliary contacts if your control scheme requires interlocking or signaling feedback.
The switch is rated for 2500A with a 480V system voltage and 120V control voltage. It is a three-pole, three-wire, fusible device with bottom-feed configuration. It supports protective options like Ground Fault Relay and Blown Fuse Detection and carries UL Listing and compatibility with NEMA 1, 3R, 4, and 12 enclosures.
Yes. It is UL Listed and supports multiple NEMA enclosure ratings (1, 3R, 4, 12), enabling operation in dusty, moist, and harsh factory environments. Optional features such as Ground Fault Relay and auxiliary provisions allow tailored protection without altering control logic, making it suitable for retrofit projects and new builds alike.
The device is UL Listed, ensuring safety compliance for industrial electrical equipment. It also aligns with NEMA ratings of 1, 3R, 4, and 12, supporting enclosure type and environmental protection. Optional provisions expand regulatory compliance for specific regional requirements and application standards.
The bolted pressure switch design provides robust durability for large motor feeders, reducing downtime from nuisance trips. The charge-before-close mechanism minimizes contact wear, lowering maintenance costs. Additionally, optional protective features and Kirk provisions enable customizable protection schemes, improving system reliability and extending service intervals in high-demand plants.