Eaton CB1633T120480GRAR Pringle switch - UL Listed
Part Number: CB1633T120480GRAR
Quick Summary
Eaton CB1633T120480GRAR is a pringle bolted pressure switch designed for high-current motor protection in industrial controls. This solution helps prevent costly downtime by delivering reliable single-phase protection with clear trip indicators. Many facilities struggle with accurate fault signaling and safe maintenance in crowded switchgear, especially during peak loads. UL Listed certification and broad NEMA ratings (1, 3R, 4, 12) support safe indoor and outdoor use, while the SPVR capacitor trip device enhances coordination with modern control circuits. The top-feed, three-pole design combines ruggedness with straightforward installation, enabling faster commissioning and reduced field-wiring errors. This model also supports optional ground-fault relays and auxiliary provisions for scalable system protection.
Product Information
Extended Description
CB1633T120480GRAR Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with three off lights (trips switch),1600A,120V,Top feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633T120480GRAR
UPC
782116898886
Product Length/Depth
16 in
Product Height
28 in
Product Width
24 in
Product Weight
175 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
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 three normally off 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 - CB1633T120480GRAR
Feature: Three-pole, top-feed design provides robust, high-current protection for demanding industrial circuits. Business Impact: Reduces wiring complexity and installation time while improving reliability for motor loads. Application: Ideal for panels and switchgear requiring safe, compact top-fed protection in 480V systems. The SPVR capacitor trip device enables coordinated tripping with control circuits, reducing nuisance trips and improving overall protection performance. Application: Suitable for critical motor starters and conveyors where precise fault clearance matters. Feature: 1600A amperage rating with 120V control voltage. Business Impact: Supports large motor currents from a single protective device, lowering total part counts and maintenance steps. Application: Heavy-duty automation lines and process equipment with high inrush profiles. Feature: NEMA 1/3R/4/12 compatibility. Business Impact: Expands installation options from indoor cabinets to outdoor enclosures with rugged protection. Application: Plant floors, outdoor switchyards, and harsh environments. Feature: Optional Ground Fault Relay, Blown Fuse Detection, and Auxiliary Provisions. Business Impact: Enhances safety, fault diagnosis, and scalability of protection schemes. Application: Retrofit projects and modular control architectures seeking flexible protection options.
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FAQs
For proper installation, plan for a top-feed, three-pole arrangement within a suitable enclosure that supports NEMA 1, 3R, 4, or 12 ratings. Ensure control power transformer compatibility for ground-fault options and verify the SPVR device is wired to coordinate with the control circuit. Verify weight (175 lb) and mounting clearances to reduce handling risk.
The CB1633T120480GRAR features a 1600A amperage rating, system voltage 480V, and a 120V control voltage. It operates under fusible protection and provides three-wire, three-pole protection with a top-feed configuration. The device is UL Listed and designed for broad enclosure compatibility to support reliable heavy-duty protection.
Yes. The catalog notes include an optional Ground Fault Relay and ground fault protection configurations. The top-feed, three-pole design supports integration with a ground-fault protection transformer, enabling improved safety in circuits with transformer-powered control power while maintaining coordination with capacitor-trip devices (SPVR).
SPVR improves trip coordination in single-phase protection schemes, making it ideal for manufacturing lines, pumps, fans, and conveyors where precise fault clearance reduces downtime. It helps minimize nuisance trips and ensures faster, safer resets after an event, which is critical in process industries and large automation panels.
The product carries Eaton’s warranty policy 25-000, offering one year from installation or eighteen months from shipment, whichever comes first. Support includes access to Eaton’s documentation, specification sheets, and a catalog of optional provisions such as auxiliary contacts and ground fault features to support ongoing maintenance and upgrades.