Eaton CB2533T120480GRA97 Bolted pressure contact switch - UL
Part Number: CB2533T120480GRA97
Quick Summary
Eaton pringle bolted pressure contact switch is a single-phase relay device used for capacitor-trip protection in low-voltage switchgear. This solution addresses common issues with trip coordination and space-constrained panel layouts by integrating a capacitor trip device and top-feed compatibility. UL Listed certification ensures safety compliance, and its NEMA-rated compatibility supports diverse enclosures. The design supports high-current protection and seamless integration with existing Eaton or third-party control architectures, delivering improved reliability, faster fault isolation, and reduced maintenance downtime while aligning with core industrial control keywords such as ground fault protection and SPVR technology.
Product Information
Extended Description
CB2533T120480GRA97 Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with three on lights (trips switch),2500A,2NO-2NC,120V,Top feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB2533T120480GRA97
UPC
782116952144
Product Length/Depth
17 in
Product Height
28 in
Product Width
28 in
Product Weight
205 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
Top
Fuse configuration
Top 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
Single-phase voltage relay with capacitor trip device (SPVR), BFD with three normally on lights (trips switch)
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - CB2533T120480GRA97
Feature: Capacitor trip device (SPVR) enables faster, more reliable single-phase protection. Business Impact: Shortens fault clearance time and reduces arc-flash exposure, improving plant safety and equipment longevity. Application: Best suited for switchgear assemblies in manufacturing lines requiring precise trip coordination. Feature: Top-feed, three-pole design with 2NO-2NC contacts provides robust control and monitoring. Business Impact: Simplifies wiring schemes, enhances control flexibility, and supports automation sequences. Application: Ideal for large enclosures where top-entry wiring is preferred and auxiliary contacts are needed for status monitoring. Feature: Ground fault protection option with control power transformer reduces undetected ground faults. Business Impact: Improves fault detection sensitivity and protects operators, lowering unplanned downtime. Application: Suitable for critical power distribution in press, pump, and conveyor systems. Feature: Fusible protection and high amperage rating (2500A) enable safe current interruption. Business Impact: Minimizes damage during faults, extends equipment life, and lowers replacement costs. Application: Large-scale motor control centers and high-load panels. Feature: Comprehensive compatibility with NEMA-rated environments and UL Listed standard. Business Impact: Eases procurement, ensures compliance, and accelerates commissioning. Application: Retrofit projects or new builds requiring validated protection in diverse industrial settings. Feature: Optional features and provisions (Ground Fault Relay, Auxiliary Contact Provisions, Kirk provisions) support modular expansion. Business Impact: Future-proofs installations, reduces future downtime, and provides scalable protection. Application: Panel builders seeking flexible protection configurations and serviceability in evolving lines.
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FAQs
For top-feed installations, ensure the switch is mounted in a UL-listed enclosure with adequate clearance for the 28 in height and 28 in width. Use the top-feed fuse configuration and grounding as specified, and plan conduit routing to accommodate the 17 in depth. Verify that the control transformer and ground fault option (if selected) are wired per Eaton guidelines to maintain proper SPVR operation.
Key specs include a 2500A amperage rating, 120 V control voltage, and a 480 V system voltage with a 480 V max. The device uses a 2NO-2NC contact configuration with fusible protection. This means it can handle high fault currents, coordinate with capacitor-trip devices for fast trips, and integrate with 3-wire control schemes while maintaining safe, controlled shutdown sequences.
Yes, it supports auxiliary contact provisions and Kirk provisions, enabling integration with third-party control circuits and monitoring systems. The modular design and top-feed configuration simplify retrofits in existing Eaton or non-Eaton switchgear, while UL Listing provides a reliable baseline for compatibility with common control panels and protection schemes.
The CB2533T120480GRA97 is UL Listed, ensuring compliance with established safety standards for electrical protection devices. It carries NEMA compatibility ratings (NEMA 1, 3R, 4, 12), which helps determine suitable enclosures and environmental suitability for various industrial applications.
The high-current capability and capacitor-trip protection reduce downtime by delivering fast, reliable fault clearance, lowering unplanned outages. The availability of optional ground fault relay and auxiliary contacts simplifies future maintenance and expansion, while the robust build and UL/NEMA compliance minimize warranty issues and service interruptions, delivering a favorable total cost of ownership over time.