Eaton CB1633B120480GR Bolted Pressure Switch - UL Listed
Part Number: CB1633B120480GR
Quick Summary
CB1633B120480GR bolted pressure contact switch delivers high-current protection for large-motor applications in switchgear and control panels. Engineers frequently wrestle with delivering dependable capacitor-trip operation and accurate ground-fault protection under fault conditions. UL Listed certification and broad NEMA compatibility (NEMA 1, 3R, 4, 12) provide regulatory confidence for harsh environments. The bottom-feed, three-pole design supports reliable, modular integration into existing panels, delivering improved uptime and predictable protection in industrial facilities and motor control centers.
Product Information
Extended Description
CB1633B120480GR Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR),1600A,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633B120480GR
UPC
782116898763
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)
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 - CB1633B120480GR
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: SPVR capacitor trip device enables rapid, controlled tripping to minimize arc damage and system downtime. Business Impact: Reduces fault energy exposure and unplanned outages, lowering maintenance costs. Application: Ideal for large-motor feeders and switchgear in process industries. The SPVR mechanism is compatible with 120 V control circuits and 480 V system voltage, ensuring consistent operation across installations. Feature: Three-pole, bottom-feed configuration with fusible protection simplifies wiring and allows straightforward field upgrades in legacy panels. Business Impact: Streamlined installation, reduced labor, and easier future fault isolation. Application: Suitable for retrofit projects in existing control rooms and new builds alike. Feature: Ground fault with control power transformer enhances protection and safety, meeting stringent electrical codes. Business Impact: Improves personnel safety and reduces risk of accidental energization during maintenance. Application: Critical in low-voltage distribution and distributed motor control networks. Feature: Heavy-duty enclosure and NEMA-rated compatibility provide dependable performance in harsh environments. Business Impact: Prolongs life cycle, minimizes corrosion and environmental ingress, and supports longer service intervals. Application: Outdoor or harsh indoor installations within industrial facilities. Feature: Optional accessories (Ground Fault Relay, Blown Fuse Detection, Auxiliary Contacts) enable tailored protection schemes. Business Impact: Improves fault diagnosis, selective tripping, and system reliability. Application: Panel builders and OEMs configuring comprehensive protection in automation architectures.
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FAQs
Yes. The CB1633B120480GR is designed for bottom-feed configurations with three-pole, 3-wire connections and 480V system voltage. Its 1600A amperage rating and 120V control circuit match common Eaton switchgear architectures, and optional features such as auxiliary contacts and Kirk provisions aid in seamless field integration.
The device uses a single-phase relay with a capacitor trip device (SPVR) for fast, reliable tripping. It features fusible protection and ground-fault capability with a control power transformer, enhancing safety and selectivity in fault conditions while minimizing nuisance trips.
Yes. With a 1600A rating and 480V system voltage, the three-pole configuration is ideal for motor control centers, switchgear, and other heavy motor feeders. Its robust enclosure, UL Listed certification, and NEMA 1/3R/4/12 compatibility support reliable performance in industrial automation environments.
The switch is UL Listed, providing recognized safety certification. It also aligns with NEMA ratings of 1, 3R, 4, and 12, which cover a variety of enclosure and environmental requirements for industrial and outdoor installations.
Eaton offers a warranty under Selling Policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. The device’s modular protections, ground fault options, and optional auxiliary features help reduce downtime and simplify maintenance planning, delivering favorable total cost of ownership for long-term reliability.