Eaton CB2533B120480G5 Pressure Switch - UL Listed
Part Number: CB2533B120480G5
Quick Summary
The Eaton CB2533B120480G5 Pressure Switch provides reliable automatic protection for three-pole control circuits in industrial switchgear and power distribution panels. A common pain point is matching high-current performance with compact, maintainable protection, especially in transformer-fed systems; this unit combines a three-pole 2500A rating with a bottom-feed design and built-in ground-fault monitoring to help mitigate nuisance trips. Certifications include UL Listed and broad enclosure compatibility with NEMA 1, 3R, 4, and 12, supporting rugged industrial environments. In practice, this means easier compliance, reduced downtime, and safer operation for OEMs and maintenance teams, while leveraging Eaton’s switching devices portfolio for seamless integration with other control components.
Product Information
Extended Description
CB2533B120480G5 Eaton: Eaton pringle bolted pressure contact switch,With control power transformer,2500A,1NO-1NC,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB2533B120480G5
UPC
782116952847
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.
Contact configuration
1 NO-1 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
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
With control power transformer
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB2533B120480G5
Feature: Three-pole, 1 NO-1 NC contact configuration. Business Impact: Enables reliable start/stop sequencing for large loads with minimal wiring complexity. Application: Ideal for heavy-duty control circuits in switchgear and process facilities. Feature: Bottom feed and fusible protection. Business Impact: Facilitates easy installation in recessed panels and enhances protection coordination, reducing fuse-related outages. Application: Suitable for compact, high-current installations in industrial plants. Feature: Built-in ground fault and control power transformer. Business Impact: Improves safety by detecting ground faults and simplifies wiring by providing a dedicated control voltage source. Application: Beneficial in motor control centers and distribution panels requiring integrated protection. Feature: 120 V control voltage and 480 V system voltage capability. Business Impact: Supports standard control circuits while handling substantial system voltage, lowering additional power conversion needs. Application: Compatible with mixed-voltage installations in manufacturing facilities. Feature: UL Listed and NEMA-rated enclosure compatibility (1, 3R, 4, 12). Business Impact: Ensures regulatory compliance and reliable operation in harsh environments, reducing maintenance cycles. Application: Approved for corrosive or damp environments and outdoor-rated enclosures in industrial settings. Feature: Optional Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, Kirk Provisions, and Auxiliary Contacts. Business Impact: Expands protection coverage and retrofit flexibility without replacing the core switch. Application: Supports customized protection schemes and integration with existing Eaton switching devices portfolio.
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FAQs
Install the CB2533B120480G5 in a compatible NEMA enclosure, ensuring it supports 480V system voltage and 2500A. Use bottom feed wiring for the three-pole, 1 NO-1 NC contacts, and connect the control power transformer as specified to enable ground fault monitoring and protective coordination with fusible protection.
The switch is rated for 2500A with a 120 V control voltage and a 480 V system voltage. It features a three-pole configuration with fusible protection and a 1 NO-1 NC contact set, suitable for high-current, transformer-fed control circuits.
Ideal for industrial power distribution, switchgear, and control panels requiring robust three-pole protection, ground fault monitoring, and fuse coordination. Its NEMA ratings make it appropriate for harsh environments such as manufacturing, water treatment, and process facilities, while the built-in transformer simplifies low-voltage control wiring.
It is UL Listed and compatible with NEMA 1, 3R, 4, and 12 enclosures, enabling operation in a range of environments. Optional features include ground fault relay, blown fuse detection, single-phase protection, Kirk provisions, and auxiliary contact provisions for expanded protection schemes.
The fusible protection and durable three-pole design reduce unexpected trips, while the built-in control power transformer simplifies wiring during commissioning. These factors translate to lower maintenance costs, shorter downtime, and improved uptime targets in critical facilities, delivering a favorable total cost of ownership for OEMs and end users.