Eaton CB1633T120480GRAX Bolted Pressure Switch - UL Listed

Part Number: CB1633T120480GRAX
Manufacturer
Eaton
Part number
CB1633T120480GRAX

Quick Summary

The Eaton CB1633T120480GRAX bolted pressure switch provides reliable single-phase protection for motor control centers and switchgear. Engineers often grapple with nuisance trips and slow fault isolation; this unit’s capacitor trip device (SPVR) and optional ground-fault/blown-fuse detection help minimize downtime. UL Listed with broad NEMA compatibility (NEMA 1, 3R, 4, 12), it withstands demanding environments. The top-feed, three-pole construction with 1600 A rating and 480 V system voltage supports scalable protection, while a 120 V control circuit simplifies integration with existing controls. This combination delivers robust protection, clear maintenance paths, and improved uptime for industrial processes. Field technicians also appreciate straightforward, tool-friendly installation and documented wiring options.

Product Information

Extended Description

CB1633T120480GRAX 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,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633T120480GRAX
UPC
782116957002
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
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
Single-phase voltage relay with capacitor trip device (SPVR), BFD with no lights (trips switch)
Feature → Business Impact → Application: The capacitor trip device (SPVR) enables a rapid, controlled trip sequence that reduces arc flash risk and protects motors from capacitor charging surges; this translates into higher machine uptime and safer start-up in high-load drives, particularly in motor control centers using single-phase protection. Application: ideal for industrial facilities employing large motors and distributed control where precise coordination and fast fault clearance are critical. Feature → Business Impact → Application: Optional ground-fault relay and blown fuse detection provide enhanced fault detection and selectivity; this reduces unnecessary outages and streamlines maintenance by pinpointing fault sources, saving maintenance time and parts cost. Application: suitable for systems requiring enhanced protection against ground faults in heavy-duty feeders. Feature → Business Impact → Application: Top-feed, three-pole configuration simplifies wiring and panel layout, enabling quicker installation and easier future upgrades; this supports scalable protection as plant demand grows. Application: suitable for new installations or panel refurbishments in manufacturing and processing facilities. Feature → Business Impact → Application: UL Listed and broad NEMA ratings (1, 3R, 4, 12) ensure regulatory compliance and rugged performance in harsh environments; this lowers approval cycles and reduces risk in environments with dust, moisture, and temperature variation. Application: ideal for utility rooms, outdoors, and harsh production lines. Feature → Business Impact → Application: Fusible protection and Kirk/Auxiliary provisions enable flexible protection schemes and easier integration with existing interlocks; this reduces modification time and supports legacy control architectures. Application: suitable for retrofits and new builds requiring configurable protective topology.

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FAQs

CB1633T120480GRAX is a three-pole, top-feed switch designed for 480V systems with a 120V control circuit. It supports NEMA 1, 3R, 4, 12 enclosures and provides UL Listed protection with optional ground-fault and auxiliary provisions, making it compatible with most motor control centers and switchgear assemblies.
Key specifications include a 1600 A amperage rating, 480 V system voltage, 120 V control voltage, fusible protection, and SPVR capacitor trip device. It is UL Listed and compatible with NEMA 1, 3R, 4, 12 environments, with optional ground-fault relay and blown-fuse detection available.
The SPVR delivers a rapid, controlled trip on fault conditions that involve capacitor charging, reducing overcurrent risk and arcing. This improves reliability by preventing nuisance trips from affecting production lines and by enabling safer, faster fault isolation in motor control applications.
Prioritize a top-feed, three-pole layout with correct fuse configuration and wiring discipline to streamline installation. Utilize Kirk provisions and auxiliary contacts when needed, and plan for ground-fault or blown-fuse options to enhance fault detection and reduce troubleshooting time during maintenance.
Yes, Eaton provides a standard warranty per policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. Comprehensive specification sheets and catalog notes are available, including UL Listed status and available accessories in the Eaton documentation library.