Eaton CB1633T120480RAX Pringle bolted pressure switch - UL
Part Number: CB1633T120480RAX
Quick Summary
Eaton CB1633T120480RAX is a bolted pressure contact switch for high-current protection in industrial switchgear. This design helps minimize nuisance trips and unplanned downtime, a common pain point in critical power systems. UL Listed certification and compatible NEMA enclosure ratings (NEMA 1, 3R, 4, 12) support safe, compliant installations across diverse environments. The solution integrates with single-phase protection schemes and capacitor trip devices (SPVR) to improve reliability, while offering robust protection for power distribution panels and controlled equipment fleets. By aligning with top-feed, three-wire configurations and fusible protection, it delivers business value through reduced maintenance costs and improved system uptime.
Product Information
Extended Description
CB1633T120480RAX Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with no lights (trips switch),1600A,120V,Top feed,No ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633T120480RAX
UPC
782116957170
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.
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
Single-phase voltage relay with capacitor trip device (SPVR), BFD with no 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 - CB1633T120480RAX
Feature: 1600A amperage rating with a three-pole, top-feed fusible configuration. Business Impact: Enables direct protection of large motors and feeders, reducing the need for multiple devices and simplifying wiring in high-current applications. Application: Switchgear and motor control centers handling heavy loads. Feature: Capacitor trip device (SPVR) for single-phase protection. Business Impact: Delivers faster, more reliable trips with improved fault discrimination, lowering arc flash risk and extending equipment life. Application: Industrial control panels where precise phase protection is critical. Feature: Blown Fuse Detection (BFD) option with no indicator lights. Business Impact: Simplifies monitoring and reduces maintenance cycles, while providing clear fault signals to upstream protection systems. Application: Remote or automated control environments needing clean, maintenance-light protection. Feature: UL Listed certification with NEMA enclosure compatibility (1, 3R, 4, 12). Business Impact: Streamlines procurement and regulatory compliance, enabling confident installation in rugged environments. Application: Any industrial setting requiring durable, code-compliant protection devices. Feature: Physical dimensions and weight (16 in L, 28 in H, 24 in W, 180 lb). Business Impact: Facilitates upfront space planning, mounting, and cabling considerations in control rooms and equipment rooms. Application: New installations and retrofits in constrained spaces where a robust, fixed protection device is preferred. Feature: Optional provisions (Ground Fault Relay, Auxiliary Contacts, Kirk provisions). Business Impact: Expands integration capabilities with existing protection schemes and monitoring systems, reducing integration risk. Application: Custom protection architectures and OEM-mountable installations where expandability matters.
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FAQs
CB1633T120480RAX requires a top-feed, three-wire, three-pole configuration and fusible protection for 480 V systems. Plan for 16 in length, 28 in height, 24 in width, and a 180 lb footprint to ensure proper mounting clearance and cable routing. Verify UL Listed compliance in the intended enclosure and confirm space for SPVR wiring and optional ground-fault or auxiliary contacts.
The SPVR capacitor trip device provides a fast, single-phase protection mechanism that improves fault discrimination and reduces nuisance trips. This translates to shorter reset times, less arc-flash exposure, and improved uptime for critical loads. It works seamlessly with three-pole, fusible protection and is compatible with top-feed configurations in standard switchgear.
Yes. The catalog notes indicate optional Ground Fault Relay and Blown Fuse Detection (BFD) provisions are available. Integrating these options enhances fault visibility, simplifies maintenance planning, and supports coordinated protection schemes within power distribution panels.
The CB1633T120480RAX is UL Listed and designed for NEMA 1, NEMA 3R, NEMA 4, and NEMA 12 enclosure environments. This combination enables safe operation across general purpose, outdoor, and harsh indoor environments, while simplifying procurement and compliance for industrial facilities.
Expected benefits include reduced downtime from fewer nuisance trips, improved reliability of high-current circuits, and streamlined maintenance with optional BFD and ground fault provisions. Although initial integration may require space planning for its 16x24x28 in footprint and 180 lb weight, the long-term protection and simplified protection schemes typically justify the investment through lower maintenance costs and less unplanned downtime.