Eaton CB1633T120480KGRAR7 Bolted pressure switch - UL
Part Number: CB1633T120480KGRAR7
Quick Summary
CB1633T120480KGRAR7 bolted pressure switch protects high‑value electrical gear in industrial control panels. Engineers often battle nuisance trips, miscoordination, and downtime caused by inadequate phase protection. This Eaton unit carries UL Listed certification and broad NEMA compatibility for rugged enclosures. With 1600A capacity, 480V system voltage, and a 120V control circuit, it delivers reliable protection while simplifying maintenance. Designed for top-feed installation and fusible protection, it integrates seamlessly with SPVR trip devices and interlock features. OEMs gain predictable protection, faster fault diagnosis, and improved safety compliance across control panels.
Product Information
Extended Description
CB1633T120480KGRAR7 Eaton: Eaton pringle bolted pressure contact switch,Interlock, single-phase relay with capacitor trip device (SPVR), BFD with three off lights (trips switch),1600A,2NO-2NC,120V,Top feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633T120480KGRAR7
UPC
782116956753
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
2 NO-2 NC
Feed type
Top
Fuse configuration
Top 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, single-phase voltage relay with capacitor trip device (SPVR), BFD with three normally off 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 - CB1633T120480KGRAR7
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: The CB1633T120480KGRAR7 provides a high amperage rating of 1600A at 480V, enabling safe and reliable switching of large motor feeders while reducing overload risk and maintenance costs in manufacturing and process plants. Application: Ideal for heavy industrial power distribution where a fault can propagate quickly, such as presses, conveyors, and pump packs. Feature → Business Impact → Application: 2 NO-2 NC contact configuration supports flexible control schemes and auxiliary signaling, improving sequence control and fault indication in control panels. Application: Beneficial for machines requiring precise interlock and trip logic in packaging lines or material handling systems. Feature → Business Impact → Application: SPVR capacitor trip device and interlock function provide fast, dependable protection with controlled close operations, decreasing unintended trips. Application: Suitable for critical loads in oil, gas, and chemical processing where safety interlocks are mandatory. Feature → Business Impact → Application: Top feed and fuse configuration simplify wiring and cabinet layout, enabling faster installation and easier field upgrades. Application: Preferred in new builds and retrofits where space optimization and code compliance matter. Feature → Business Impact → Application: UL Listed certification and broad NEMA ratings (1, 3R, 4, 12) offer compliance confidence and installation versatility in harsh environments. Application: For control panels in harsh industrial environments requiring rugged protection and safe maintenance.
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FAQs
For top-feed installations, ensure proper cable entry clearance, correct wiring of the 3-wire configuration, and alignment with the fuse block. Use the fusible protection option and verify compatibility with ground fault relay provisions. The unit supports 2NO-2NC contacts and SPVR devices, simplifying control logic and maintenance access in large control cabinets.
This model is designed for three-pole, 480V power distribution with a 120V control circuit, enabling reliable high-current switching and integrated protection. The 1600A rating supports heavy motor loads, while the SPVR capacitor trip device provides fast, predictable trip behavior, reducing nuisance trips and improving system reliability.
Applications with critical safety interlocks and capacitor-trip protection, such as motor control centers and packaging lines, benefit the most. SPVR ensures a controlled trip with pre-charge sequencing, while interlocks prevent unsafe close operations, enhancing personnel safety and equipment protection in high-energy systems.
Yes, the unit is UL Listed, providing a verified safety standard for electrical protection equipment. It also carries broad NEMA ratings (1, 3R, 4, 12) for enclosure compatibility, which supports compliance across typical industrial environments and simplifies the approval process during installation.
The high-current capacity and robust protection reduce unplanned downtime from electrical faults, while reliable trip logic lowers maintenance costs. In addition, the top-feed, fusible design simplifies wiring, which shortens installation time and minimizes field labor costs, delivering faster project ROI and improved line uptime.