Eaton CB2533B120480AX Pringle bolted switch - UL Listed
Part Number: CB2533B120480AX
Quick Summary
Eaton CB2533B120480AX is a bolted pressure contact switch designed for high-current protection in heavy-duty low-voltage power distribution. This model addresses reliability and fault-detection challenges typical in demanding environments by combining rugged construction with clear electrical signaling. UL Listed certification and strong NEMA compatibility (1, 3R, 4, 12) support compliance across diverse panelboards, MCCs, and switchgear applications. By aligning with these standards, it delivers predictable performance, streamlined maintenance, and reduced downtime. For engineers and procurement teams, the combination of 2500A capacity, 480V system compatibility, and optional protective features translates into safer, more economical power distribution solutions with faster project timelines.
Product Information
Extended Description
CB2533B120480AX Eaton: Eaton pringle bolted pressure contact switch,BFD with no 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
CB2533B120480AX
UPC
782116952991
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 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 - CB2533B120480AX
Feature: 2500A amperage rating → Business Impact: Enables handling of large load contingencies with margin for future growth, reducing the need for upsizing components later. Application: Motor control centers and main feeders in industrial plants. Feature: 480V system voltage rating and 120V control voltage → Business Impact: Simplifies integration with common low-voltage controls while enabling robust protection at distribution voltages, lowering wiring complexity and installation time. Application: Panelboards and switchgear in process automation lines. Feature: Three-pole, three-wire configuration with bottom feed → Business Impact: Enhances safety and wiring efficiency in compact spaces, enabling straightforward backplane mounting and serviceability. Application: 3-phase power distribution in conveyors and stamping lines. Feature: Fusible protection and charge-before-close mechanism → Business Impact: Improves fault isolation and reduces inrush risk, supporting safer startup sequences and compliance with protective coordination requirements. Application: Heavy machinery, presses, and pumps. Feature: Optional Ground Fault Relay, Blown Fuse Detection, Auxiliary Contact Provisions, Kirk Provisions → Business Impact: Expands fault-detection capabilities and system interoperability without replacing the switch, cutting downtime and spare-part costs. Application: MCCs, control panels, and metering enclosures. Feature: UL Listed with diverse NEMA ratings (1, 3R, 4, 12) → Business Impact: Facilitates regulatory clearance and broad installation options across harsh environments, lowering project risk. Application: Industrial outdoor and damp locations, enclosures, and commercial distribution setups.
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FAQs
This unit uses a bottom feed and fuse configuration, with three wires and a three-pole design. To install, mount in a suitable enclosure, connect the three power lines to the lower terminals, attach the control wiring at 120 V per the wiring diagram, and utilize available Kirk provisions or auxiliary contacts if needed. Ensure proper clearance and follow local code requirements for low-voltage control circuits.
CB2533B120480AX offers a 2500A amperage rating, 480V system voltage, and 120V control voltage, with fusible protection. It is designed as a three-pole device rated for NEMA 1, 3R, 4, and 12 enclosures. Optional features include Ground Fault Relay, Blown Fuse Detection, and Auxiliary Contact Provisions, enhancing fault detection and control options in complex power systems.
Yes. The three-pole, bottom-fed CB2533B120480AX is well suited for motor control centers, switchgear, and panelboards operating at 480V. Its high current rating and fusible protection support protective coordination in MCCs, while 120V control and UL Listing simplify integration with standard control circuits and compliance requirements.
The switch is UL Listed, indicating compliance with recognized safety standards. It also supports broad installation in environments covered by NEMA ratings 1, 3R, 4, and 12, enabling use in a range of indoor and outdoor or damp locations. Optional features like Ground Fault Relay and blown fuse detection further assist meeting reliability and protection standards for modern electrical systems.
Maintenance benefits include reduced downtime due to reliable electrical trip signaling and optional fault-detection add-ons, which simplify diagnostics. The device’s high current capacity and robust enclosure ratings minimize replacement frequency, while the one-year warranty (or 18 months from shipment) provides initial cost protection. Overall, it supports lower total cost of ownership in high-demand industrial environments.