Eaton CB1633B120480KGA9 - Bolted pressure switch UL Listed
Part Number: CB1633B120480KGA9
Quick Summary
CB1633B120480KGA9 is a bolted pressure switch used to protect heavy electrical feeders in commercial and industrial switchgear. Engineers often face nuisance trips and mis-coordination in 480 V networks, which erode uptime. UL Listed certification confirms safety compliance, while the device’s NEMA 1, 3R, 4, and 12 ratings ensure suitability for indoor, outdoor, washdown, and corrosive environments. The unit’s 1600 A amperage rating and 480 V system voltage provide robust protection for high-capacity circuits, with 120 V control voltage supporting straightforward control power. For procurement and maintenance teams, this switch offers reliable protection with optional ground fault relay and ground fault detection, reducing downtime and simplifying service contracts, while delivering consistent performance in variable conditions.
Product Information
Extended Description
CB1633B120480KGA9 Eaton: Eaton pringle bolted pressure contact switch,Interlock, BFD with three on lights (trips switch),1600A,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633B120480KGA9
UPC
782116958320
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, BFD 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 - CB1633B120480KGA9
Three-pole bolted pressure switch design delivers robust protection for large feeders in switchgear, enabling high-current reliability and safer shutdown sequences in industrial environments. Business impact: reduces unplanned outages and improves fault isolation, supporting uptime targets in manufacturing lines and data centers. Application: suitable for 480 V distribution schemes with a 1600 A rating, ensuring compatibility with heavy-duty motors and high-load equipment. Bottom feed and fuse configuration simplify installation, wiring, and enclosure wiring density, cutting installation time and minimizing wiring errors on new builds or retrofits. Interlock functionality with three normally-on lights provides immediate visual feedback of trips, enhancing maintenance safety and accelerating fault diagnosis. Optional ground fault relay and ground fault detection improve protection granularity, helping meet electrical warranties and compliance expectations. Industry-specific insight: end users frequently require clear trip indicators and straightforward upgrade paths; this unit’s design supports that without sacrificing enclosure integrity or serviceability. With UL Listed certification and broad NEMA compatibility, it offers a reliable baseline for regulated environments while preserving future expandability.
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FAQs
When installing the CB1633B120480KGA9 in a 480V distribution, use the bottom feed configuration to simplify wiring and reduce enclosure space. Ensure proper grounding with the ground fault option if required, verify three-pole connections for balanced phase protection, and follow UL-listed installation practices to maintain NEMA ratings. Confirm clear path for interlock indicators to aid maintenance visibility.
The switch provides fusible protection with a charge-before-close mechanism, supporting reliable fault clearance. Optional ground fault relay and ground fault detection offer enhanced fault isolation, while three on-lights provide immediate trip status. This combination reduces nuisance trips and simplifies diagnostic workflows, contributing to higher uptime and easier preventive maintenance planning.
Yes. The product is UL Listed and compatible with multiple NEMA configurations including NEMA 1, 3R, 4, and 12 enclosures. This makes it suitable for indoor use, outdoor installations, washdown environments, and corrosive settings, aligning with common regulatory and industry standards for heavy-duty protection in industrial plants.
This unit is designed for high-current, three-pole protection in commercial and industrial power distribution, including data centers, manufacturing lines, and large machinery feeds. Its 480V system voltage and 1600A rating match demanding switchgear applications, while UL Listed and broad NEMA compatibility ensure reliable performance in harsh or variable environments.
The switch’s robust construction and optional fault-detection features reduce unplanned outages and maintenance window frequency, lowering total cost of ownership. Routine checks focus on wiring integrity, status indicators, and the availability of optional ground fault components. Over time, the improved reliability and reduced downtime contribute to faster return on investment, especially in high-demand facilities.