Eaton CB1633T120480GRAX6 Pringle bolted switch UL
Part Number: CB1633T120480GRAX6
Quick Summary
Eaton CB1633T120480GRAX6 is a pringle bolted pressure contact switch designed for high‑capacity motor control in industrial switchgear and control panels. Engineers often struggle with reliable trip performance, fault isolation, and maintaining serviceability in crowded enclosures. This unit couples a three‑pole fusible design with a capacitor trip device (SPVR) and optional ground fault protection, delivering safer operation and faster fault clearance. It carries UL Listed certification and supports NEMA 1, 3R, 4, and 12 enclosures, enabling easy top‑feed installation and retrofit compatibility. By leveraging this switch, engineering teams can improve protection coordination, reduce downtime, and simplify maintenance workflows across motor control centers and panel assemblies.
Product Information
Extended Description
CB1633T120480GRAX6 Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with no lights (trips switch), handle suitable for 6'6" requirements,1600A,120V,Top feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633T120480GRAX6
UPC
782116956982
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), handle suitable for 6'6" requirements
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB1633T120480GRAX6
Feature: High amperage rating and system voltage. Benefit: Supports large motors and high‑current circuits (1600A at 480V), reducing fuse changes and enabling reliable protection in demanding applications. Application: Motor control centers and heavy equipment panels. Feature: Three‑pole, top‑feed fusible design with SPVR. Benefit: Precise, capacitor-assisted trips improve fault clearance and coordination, lowering downtime and energy waste. Application: Industrial power distribution where single‑phase protection is essential. Feature: Optional ground fault relay and ground fault protection options. Benefit: Enhanced personnel safety and compliant fault detection in spaces with exposed conductors. Application: Safety‑critical panels and outdoor or damp environments. Feature: NEMA ratings and UL Listed construction. Benefit: Enclosure compatibility and approved reliability in harsh environments, reducing commissioning risk. Application: Enclosed switchgear, panelboards, and MCCs across manufacturing plants. Feature: Top‑feed configuration and compact footprint. Benefit: Easier retrofit into existing gear and simplified wiring, accelerating installation. Application: Retrofit projects and new builds with limited installation space. Feature: Built‑in provisions for auxiliary contacts and Kirk/auxiliary options. Benefit: Streamlined control logic, easier system integration, and reduced wiring complexity. Application: Process lines requiring extended interlocks and signaling.
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FAQs
CB1633T120480GRAX6 delivers three‑pole protection rated at 1600A for 480 V systems, with fusible protection and SPVR capability. It is UL Listed and suitable for NEMA 1, 3R, 4, and 12 enclosures, making it a strong fit for motor control centers and switchgear panels in harsh industrial environments.
The SPVR capacitor trip device provides single‑phase protection with a capacitor‑assisted trip mechanism, ensuring a fast, controlled interruption during abnormal conditions. This improves coordination with upstream breakers and reduces nuisance trips in systems with capacitor banks or sensitive loads.
Yes, the top‑feed design and 16 in × 28 in × 24 in footprint support retrofit into many existing panels. The unit’s three‑pole, fusible configuration plus optional ground fault and auxiliary provisions simplify integration, enabling faster commissioning and minimal enclosure modification.
The device is designed for NEMA 1, 3R, 4, and 12 enclosures and weighs approximately 180 lb. It measures 16 in in length, 28 in in height, and 24 in in width, with a top feed/fuse configuration that aligns with common industrial switchgear layouts.
Options include Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, Kirk provisions, and Auxiliary Contact Provisions. These features help expand monitoring, signaling, and interlock capabilities, improving safety, reliability, and control‑system integration in complex electrical installations.