Eaton CB2533B120208GRAX Pressure Switch - UL Listed
Part Number: CB2533B120208GRAX
Quick Summary
The Eaton CB2533B120208GRAX pressure switch is designed to protect large industrial feeders and motor circuits with reliable, trip-enabled control. This device combines robust electrical trip with a capacitor trip mechanism to minimize nuisance trips and protect equipment under heavy loads. UL Listed safety certification and broad enclosure compatibility, including NEMA 1, 3R, 4, and 12 ratings, support installation in demanding environments. The bottom-feed, three-pole configuration supports 208V system voltages and 2500A amperage with a 120V control circuit, while optional features like ground fault relay and blown fuse detection help you meet strict protection requirements and reduce unplanned downtime.
Product Information
Extended Description
CB2533B120208GRAX Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with no lights (trips switch),2500A,120V,Bottom feed,Ground fault,208V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB2533B120208GRAX
UPC
782116952861
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
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
208 V
Voltage - max
208 V
Voltage rating
208 V
Special features
Single-phase voltage relay with capacitor trip device (SPVR), 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 - CB2533B120208GRAX
Feature → Business Impact → Application: The CB2533B120208GRAX provides a 2500A amperage rating, enabling protection of high‑current feeders and large motors, reducing thermal stress and equipment wear; Application: motor control centers and main feeders in industrial facilities. Feature → Business Impact → Application: 208V system voltage with a 120V control circuit ensures compatibility with common plant power layouts, simplifying integration and wiring, while preserving a robust control interface; Application: large panel assemblies and switchgear rooms. Feature → Business Impact → Application: Bottom feed, three‑pole fusible protection delivers compact, rugged installation with reliable fault isolation; Application: compact switchgear installations in harsh environments. Feature → Business Impact → Application: SPVR capacitor trip device enables fast, controlled tripping to prevent cascading faults; Application: single‑phase protection within three‑pole systems. Feature → Business Impact → Application: Optional Ground Fault Relay, Blown Fuse Detection, and auxiliary provisions support enhanced safety compliance and proactive maintenance; Application: critical facilities and mission‑critical processes. Feature → Business Impact → Application: UL Listed certification and broad NEMA compatibility simplify approvals and field installation; Application: industrial environments requiring recognized safety compliance and versatile enclosure options.
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FAQs
Yes. The CB2533B120208GRAX is specified as a three‑pole unit with bottom feed configuration and bottom feed fuse arrangement, making it well suited for integration into bottom‑fed switchgear assemblies and compact control panels while maintaining full three‑phase protection and reliable fault isolation.
The device provides a 2500A amperage rating with a 208V system voltage and a 120V control circuit. It uses fusible protection and an electrical trip with a charge‑before‑close mechanism, plus an optional single‑phase capacitor trip device (SPVR) to improve protection selectivity and trip timing, reducing nuisance disturbances during load transients.
Ideal for large feeders and heavy motor loads in motor control centers and switchgear rooms, the CB2533B120208GRAX supports harsh environments with NEMA 1, 3R, 4, and 12 compatibility. Its bottom‑feed design, ground fault options, and robust enclosure protection make it a reliable choice for critical processing lines and distribution panels.
UL Listed certification assures basic safety compliance for installation and operation. When selecting for harsh environments, consider enclosure ratings such as NEMA 1, 3R, 4, and 12 to ensure appropriate dust, water, and corrosion protection. Also evaluate optional features like ground fault detection and auxiliary contacts for enhanced safety and regulatory alignment.
Benefits include reduced unplanned downtime due to precise trip control, lower repair costs from fewer nuisance trips, and extended equipment life through reliable overcurrent protection. With optional features like blown fuse detection and ground fault relay, maintenance teams can perform proactive health checks, potentially lowering maintenance frequency and improving overall line uptime.