Eaton CB1633B120480KG Pringle bolted switch - UL Listed
Part Number: CB1633B120480KG
Quick Summary
Eaton pringle bolted pressure contact switch provides reliable interlock and fault protection for heavy electrical switchgear in industrial facilities. Operators often struggle with safe startup, rapid fault isolation, and consistent protection across feeders, which can lead to costly downtime. This unit carries UL Listed certification and broad NEMA ratings (NEMA 1, 3R, 4, 12) to support rugged indoor and outdoor installations, with optional ground fault and auxiliary provisions. Designed for low-voltage switchgear, it delivers robust performance at 480V with a 120V control circuit, helping you meet safety and compliance while reducing maintenance and replacement costs.
Product Information
Extended Description
CB1633B120480KG Eaton: Eaton pringle bolted pressure contact switch,Interlock,1600A,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633B120480KG
UPC
782116958344
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
Interlock
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 - CB1633B120480KG
Feature: 1600A amperage rating provides capacity for large feeders without derating. Benefit: minimizes equipment bottlenecks and avoids unnecessary panel upgrades, improving overall line efficiency in high-load applications. Application: motor feeders and distribution panels in manufacturing lines. Feature: 480V system voltage with 120V control voltage enables direct compatibility with common plant power architectures. Benefit: simplifies wiring schemes and reduces installation time while maintaining safe control logic. Application: low-voltage switchgear assemblies in industrial plants. Feature: three-pole configuration with bottom feed and fusible protection. Benefit: ensures reliable three-phase isolation and fast fault clearing for minimal arc exposure. Application: factory automation racks and power distribution centers. Feature: interlock capability and optional ground fault relay. Benefit: enhances safety by preventing unsafe re-energization and enabling precise fault detection. Application: controlled shutdowns in safety-critical lines. Feature: wide NEMA compatibility (1, 3R, 4, 12) and UL Listed. Benefit: supports versatile enclosure environments and regulatory compliance across multiple facilities. Application: harsh or variable environments common in industrial settings. Feature: optional auxiliary contact provisions, Kirk provisions, and ground fault options. Benefit: expands monitoring, signaling, and integration with plant SCADA or safety systems. Application: modernized control rooms and safety interlocks. Feature: available Ground Fault Relay, Blown Fuse Detection, and Single Phase Protection options. Benefit: reduces unplanned outages and simplifies preventive maintenance planning. Application: preventive maintenance programs in process and manufacturing sectors.
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FAQs
CB1633B120480KG is designed for three-pole, bottom-feed installations in low-voltage switchgear with 480V systems and 120V control. Its footprint aligns with common Eaton configurations, and optional features such as auxiliary contacts and Kirk provisions simplify retrofits and add signaling capacity for existing panels. Verify enclosure clearance and mounting provisions prior to upgrade.
The switch supports up to 1600A amperage, 480V system voltage, and 120V control voltage with fusible protection. It is UL Listed and compatible with NEMA 1, 3R, 4, and 12 enclosures, enabling reliable operation across indoor and outdoor environments and ensuring compliance with prevalent electrical codes.
Yes. The unit offers optional Ground Fault Relay and a ground fault with control transformer configuration. When selected, it provides improved fault detection and safer motor and feeder isolation, reducing the risk of ground faults affecting downstream equipment.
Eaton products typically follow policy 25-000, offering a one-year warranty from installation or eighteen months from shipment, whichever comes first. The modular design and optional protective features simplify preventive maintenance and parts replacement, helping to minimize downtime and service costs.
It delivers improved safety through interlock and ground fault options, reduces downtime with fast, reliable isolation, and simplifies regulatory compliance with UL Listed status and broad NEMA compatibility. Its compatibility with 480V/120V systems and optional monitoring features support robust, scalable switchgear protection for high-demand manufacturing environments.