Eaton CB1633T120480KA95 Pringle bolted switch - UL Listed
Part Number: CB1633T120480KA95
Quick Summary
The Eaton CB1633T120480KA95 pringle bolted pressure contact switch provides reliable electrical interlock control for heavy machinery protection. Engineers often struggle with ensuring reliable interlocks, fuse protection, and trip coordination in demanding electrical feeds. UL Listed certification supports code compliance, while its NEMA ratings—NEMA 1, 3R, 4 and 12—enable installation in dry, damp, or harsh environments. Coupled with its 1600A rating and 480V system compatibility, this unit offers safety and performance while reducing downtime and maintenance costs.
Product Information
Extended Description
CB1633T120480KA95 Eaton: Eaton pringle bolted pressure contact switch,Interlock, FBD with three on lights (trips switch),1600A,1NO-1NC,120V,Top feed,No ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633T120480KA95
UPC
782116956852
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
No ground fault
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, FBD with three normally on 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 - CB1633T120480KA95
High-current capability and three-pole design enable robust motor control in demanding applications, delivering a clear business impact of reduced equipment wear and safer startup sequences in large switchgear assemblies. This translates to reliable operation for heavy machinery and conveyors, improving uptime and operator safety in manufacturing environments. The 1NO-1NC contact configuration provides flexible interlock options, supporting both automatic and manual overrides while simplifying panel wiring in control rooms and motor control centers. With a top-feed, fusible configuration, engineers gain streamlined installation and quicker fault isolation, reducing commissioning time and maintenance costs on the shop floor. NEMA 1, 3R, 4, 12 ratings and UL Listed certification ensure regulatory compliance and rugged performance in dusty, humid, or outdoor environments, minimizing corrosion risk and warranty claims. Optional Ground Fault Relay, Blown Fuse Detection, and Auxiliary Provisions address specific protection schemes, enabling compliant protective relays and selective tripping in complex lines. This product’s interlock features (FBD with three normally-on lights) enhance operator awareness and safety audits, supporting safer changeovers and routine inspections in process lines.
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FAQs
Yes. The CB1633T120480KA95 is a three-pole, top-feed switch designed for replacement in compatible switchgear. Its 1NO-1NC configuration and fusible protection simplify retrofits by matching common control circuits (120 V) and 480 V system voltage, while maintaining UL Listed safety and NEMA 1/3R/4/12 protection. Always verify exact panel dimensions and mounting compatibility prior to replacement.
The switch handles up to 1600A with a 480V system voltage and 120V control voltage. These ratings suit heavy motor loads, large contactors, and main disconnects in industrial plants. The device is UL Listed and supports NEMA 1, 3R, 4, and 12 installations, making it suitable for clean rooms to harsh, damp, or dusty environments.
Yes. It is UL Listed and features NEMA 1, NEMA 3R, NEMA 4, and NEMA 12 ratings. This combination provides code-compliant protection and reliable enclosure performance across a broad range of environments, from indoor panels to outdoor enclosures, reducing compliance risk and maintenance complexity.
The interlock with three normally-on lights (trip indication) provides immediate visual feedback when a fault or trip occurs. This reduces investigation time, helps operators verify proper sequence during start-up and shutdown, and supports quick fault isolation on conveyors, presses, or pumps, ultimately lowering incident risk and improving overall line safety.
The unit follows Eaton’s standard warranty policy with typical coverage aligned to field installation and use. For ROI, routine inspections of connections, fuse condition, and interlock indicators are recommended quarterly, along with periodic testing of trip functions. Leveraging the optional auxiliary provisions and fault-detection features can reduce unplanned downtime and extend service life.