Eaton CB1633T120480GRAX5 Pringle bolted pressure switch - UL
Part Number: CB1633T120480GRAX5
Quick Summary
Eaton pringle bolted pressure contact switch is a high-capacity protection device for low-voltage switchgear and MCCs. Engineers often wrestle with coordinating protective relays and devices in large panels, which can lead to mis-trips and downtime. UL Listed certification and robust NEMA compatibility (NEMA 1, 3R, 4, 12) support reliable operation in harsh environments. With top-feed wiring and a capacitor trip device for single-phase protection, installation is straightforward and future-proof. Ground-fault options and auxiliary provisions further simplify integration, delivering safer, repeatable protection for critical processes while reducing commissioning time and lifecycle costs.
Product Information
Extended Description
CB1633T120480GRAX5 Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with no lights (trips switch),1600A,1NO-1NC,120V,Top feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633T120480GRAX5
UPC
782116956999
Product Length/Depth
16 in
Product Height
28 in
Product Width
24 in
Product Weight
180 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
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
1600A
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 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 - CB1633T120480GRAX5
1600A amperage rating provides design headroom, reducing the number of devices in large distribution panels and enabling cost-effective protection in high-load applications. Feature → Business Impact → Application: Fewer devices mean lower panel footprint and simplified maintenance in motor control centers and distribution boards; ideal for utilities, metals processing, and continuous-process facilities where uptime matters. 1NO-1NC contact configuration enables versatile control schemes, allowing quick integration with existing protection relays and control circuits; this reduces wiring complexity and shortens start-up times in machine centers. Three-pole, three-wire topology supports coordinated protection across phases, minimizing cross-coupling faults and ensuring reliable operation in three-phase systems. SPVR with capacitor trip device provides precise trip performance, enhancing safety margins for single-phase feeders and reducing nuisance trips during startup. Ground fault with control transformer support improves fault detection and keeps control power isolated, boosting system reliability in harsh environments. NEMA ratings and UL Listed certification simplify adherence to compliance and procurement standards, while optional auxiliary provisions and Kirk provisions enhance retrofitability in legacy switchgear. In practice, these features translate to measurable efficiency gains, lower total cost of ownership, and a smoother path to compliance in industrial power systems.
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FAQs
This model uses a top-feed, three-pole, three-wire configuration with 1NO-1NC contacts and fusible protection. Plan for space in a control panel or MCC bucket, ensure compatible NEMA enclosure ratings, and connect the ground fault transformer as specified. The unit supports auxiliary and Kirk provisions, simplifying retrofits and future expansions.
It is rated for 1600A with a 480V system voltage and 120V control voltage, featuring a single-phase capacitor trip device (SPVR) and fuse protection. The switch is three-pole, three-wire with 1NO-1NC contact configuration and supports ground fault protection through an integrated transformer.
Yes. With a high amperage rating, three-pole construction, and UL listing, the CB1633T120480GRAX5 is well-suited for motor control centers and switchgear assemblies. Its top-feed and compatible NEMA ratings simplify integration, reduce wiring complexity, and improve protection coordination across feeder and feeder-breaker setups.
The device carries UL Listed certification, ensuring compliance with common electrical safety and performance standards. Its NEMA ratings—1, 3R, 4, and 12—indicate suitability for indoor, outdoor, and harsh industrial environments, helping installers meet industry requirements and procurement specs.
The product follows Eaton’s policy terms, including a warranty period from installation or shipment (1 year or 18 months, whichever comes first). For ongoing reliability, rely on its robust protection features, UL certification, and modular provisions that ease periodic inspection, spare parts planning, and retrofit projects.