Eaton CB1633B120480GRAO Pringle bolted pressure contact switch - UL Listed
Part Number: CB1633B120480GRAO
Quick Summary
The Eaton CB1633B120480GRAO bolted pressure contact switch provides single-phase protection for large electrical feeders in industrial plants. Operators often contend with nuisance trips, unreliable protection, and downtime when protection devices fail to trip as intended. UL Listed safety certification underpins safe operation, and the unit’s NEMA compatibility supports dependable installation in harsh environments. With optional Ground Fault Relay, Blown Fuse Detection, and auxiliary contact provisions, it delivers safer protection, easier maintenance, and long-term cost savings for our industrial customers.
Product Information
Extended Description
CB1633B120480GRAO Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with three off lights (does not trip),1600A,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633B120480GRAO
UPC
782116898770
Product Length/Depth
16 in
Product Height
32 in
Product Width
24 in
Product Weight
200 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
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 (does not trip)
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB1633B120480GRAO
Feature: 1600A amperage rating. Business Impact: Handles high-current feeder protection with margin for startup surges, reducing the risk of nuisance tripping and extending equipment life. Application: Ideal for large motors and heavy loads in manufacturing plants, data centers, and process facilities. Feature: Three-pole bottom-feed configuration. Business Impact: Simplifies wiring and cabinet layout, enabling faster installation and consistent fault isolation. Application: Drop-in replacement in existing three-wire systems with bottom-feed mounting, minimizing downtime during upgrade. Feature: System voltage 480V with 120V control voltage; NEMA ratings including 1, 3R, 4, 12. Business Impact: Broad compatibility with common plant power distribution and enclosure standards, enabling safer, code-compliant installations. Application: Suitable for diverse industrial environments requiring robust enclosures. Feature: Capacitor trip device (SPVR) and fusible protection; optional Ground Fault Relay. Business Impact: Provides fast, selective tripping and ground-fault awareness, reducing downtime and improving safety compliance. Application: Critical protection for feeders and switchgear in processing facilities. Feature: Durable build with UL Listed certification and substantial enclosure footprint (16 in x 24 in x 32 in, 200 lb). Business Impact: Ready-to-install in standard industrial cabinets, minimizing custom fabrication while delivering long-term reliability and warranty support. Application: Ideal for retrofit projects and new installations in heavy-duty electrical rooms.
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FAQs
CB1633B120480GRAO uses a bottom-feed, three-wire configuration and is designed for integration with standard enclosure footprints rated for industrial use. Ensure the enclosure supports NEMA ratings 1, 3R, 4, and 12, and verify mounting clearances for the 16 x 24 x 32 inch unit (approximate 200 lb weight). Consider optional auxiliary contacts, ground fault provisions, and SPVR compatibility to match the panel’s protection scheme and wiring diagram.
The switch provides 1600A amperage, 480V system voltage, and 120V control voltage across three poles with fusible protection. It includes a capacitor trip device (SPVR) and ground fault capability with transformer-protected control power, plus UL Listed safety certification and NEMA compatibility for reliable protection in industrial environments.
This device is ideal for large feeders and switchgear in manufacturing facilities, data centers, and processing plants where high-current protection and dependable single-phase operation are required. Its bottom-feed design and three-pole configuration simplify integration into existing low- to medium-voltage distribution systems while providing robust fault protection.
The capacitor trip device (SPVR) delivers a rapid, voltage-sensitive trip signal that pre-coordinates with downstream protection. This reduces nuisance trips during transient events and allows safer, more reliable operation of single-phase feeders, especially in systems with capacitive loads or startup surges.
The product carries Eaton’s warranty per policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. Support includes access to Eaton specifications, catalog notes, and technical datasheets, plus guidance on installation, maintenance, and compatibility with optional features like ground fault relays and auxiliary contacts.