Eaton CB2533B120480KG7 Pringle bolted switch - UL Listed
Part Number: CB2533B120480KG7
Quick Summary
Eaton CB2533B120480KG7 bolted pressure contact switch provides high-current protection for power distribution panels and switchgear. This design addresses downtime and reliability concerns by delivering robust interlock operation and fault detection in demanding environments. UL Listed certification paired with broad NEMA ratings (NEMA 1, 3R, 4, 12) supports safe, compliant performance across industrial applications. The solution also delivers strong business value through scalable control voltage options, bottom-feed mounting, and fusible protection, enabling easier integration with existing panels and control circuits while reducing installation risk and long-term maintenance costs.
Product Information
Extended Description
CB2533B120480KG7 Eaton: Eaton pringle bolted pressure contact switch,Interlock,2500A,2NO-2NC,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB2533B120480KG7
UPC
782116952649
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
2 NO-2 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
Interlock
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB2533B120480KG7
Feature: 2500A amperage rating at 480V; Business Impact: Supports large motor loads and feeder protection with margin for startup surges; Application: Power distribution terminals and high-load switchgear where reliability is paramount. The high current capability translates to reduced nuisance trips and extended equipment life. Feature → Business Impact → Application. Feature: 2 NO-2 NC contact configuration; Business Impact: Flexible control logic for move-to-run sequences, interlocks, and auxiliary signaling without adding separate devices; Application: Complex control schemes in MCCs and panel assemblies. Feature: Interlock with ground fault and optional protections; Business Impact: Enhanced safety and arc-flash reduction through controlled energization and fault monitoring; Application: Critical protection schemes in industrial automation. Feature: Bottom feed and fusible configuration; Business Impact: Simplified wiring topology and safe, organized enclosure layouts; Application: Compact switchgear enclosures where bottom-fed fuses are standard. Feature: Ground fault with control power transformer; Business Impact: Immediate fault detection feedback reduces downtime and improves crew safety; Application: Facilities prioritizing rapid fault isolation and diagnostics. Feature: Three-pole, three-wire design with 120V control voltage and 480V system rating; Business Impact: Clear separation of control and power circuits, enabling safer maintenance and easier compliance; Application: Industrial power distribution requiring robust isolation and cross-compatibility with existing control rails. Feature: Optional ground fault relay, blown fuse detection, single-phase protection; Business Impact: Proactive protection layers and reduced risk of unplanned outages; Application: Skid-mounted plants and process lines where continuous operation is critical. Feature: UL Listed certification and broad enclosure compatibility (NEMA 1, 3R, 4, 12); Business Impact: Streamlined procurement and compliance; Application: Global manufacturing environments with strict safety standards. Feature: Kirk provisions and auxiliary contact provisions support future expansion; Business Impact: Investment-ready design that scales with evolving control needs; Application: Long-term automation projects with evolving safety requirements.
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FAQs
This unit is designed for bottom-feed installation with a three-pole configuration and 2NO-2NC contacts. It fits common switchgear footprints and supports 120V control voltage alongside a 480V system, making it straightforward to exchange older bolted switches without rewiring the main feeders. Ensure mounting clearance for 235 lb weight and follow manufacturer torque specifications for secure bus connection.
The CB2533B120480KG7 handles up to 2500A with a 480V system voltage and 120V control voltage. It provides fusible protection and offers ground fault options. The switch is UL Listed and supports NEMA 1, 3R, 4, 12 enclosures, enabling safe operation in diverse environments. The 2NO-2NC configuration supports flexible control schemes and interlock logic for safe sequence control.
Yes, the CB2533B120480KG7 is UL Listed, confirming compliance with recognized safety standards. It supports NEMA 1, 3R, 4, and 12 enclosures, covering indoor, outdoor, dusty, and wet environments. This broad compatibility simplifies procurement and reduces enclosure-specific tailoring, enabling smoother integration into established switchgear and distribution panels.
Consider routine inspection of electrical connections, interlock integrity, and control wiring every six to twelve months, depending on duty cycle. The catalog notes optional features such as Ground Fault Relay, Blown Fuse Detection, and Single Phase Protection, which may require periodic testing. Warranty is one year from installation or eighteen months from shipment, whichever occurs first, aligning with standard industry practices for heavy-duty switching devices.
Expected benefits include reduced unplanned downtime due to reliable fault detection, improved safety with interlocks and ground fault protection, and easier OEM compliance thanks to UL Listing and broad enclosure compatibility. The 2500A rating supports larger loads, potentially reducing the number of parallel devices and simplifying panel architecture, which translates to lower maintenance costs and faster service response.