Eaton CB1633B120480GRA9 Pressure Switch - UL Listed
Part Number: CB1633B120480GRA9
Quick Summary
Eaton pringle bolted pressure contact switch provides rapid fault protection for heavy-duty electrical panels. This high-current device safeguards 480V distribution with a three-pole configuration and a 1600A rating, while offering a reliable 120V control circuit. Maintenance teams often struggle with nuisance trips and downtime in large switchgear, and this unit’s SPVR capacitor trip device helps mitigate that risk. UL Listed certification ensures safety and regulatory compliance, while its NEMA 1, 3R, 4, and 12 ratings support use in indoor enclosures and challenging environments. By combining robust protection with bottom-feed wiring and optional auxiliary features, it delivers measurable uptime, easier installation, and long-term lifecycle value for industrial plants.
Product Information
Extended Description
CB1633B120480GRA9 Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), 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
CB1633B120480GRA9
UPC
782116958474
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
Single-phase voltage relay with capacitor trip device (SPVR), 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 - CB1633B120480GRA9
Feature: High current capability and 480V system compatibility. Business Impact: Enables reliable protection for large motors and feeders without over-sizing controls, reducing wiring complexity and potential heat load. Application: Suitable for switchgear and motor control centers in high-power industrial facilities. Feature: Bottom-feed fuse configuration with ground fault protection. Business Impact: Simplifies wiring and enhances safety by integrating ground fault monitoring at the source. Application: Ideal for panel installations with limited top-entry access. Feature: SPVR capacitor trip device (single-phase) with trip indication. Business Impact: Delivers fast, predictable tripping to minimize fault duration and equipment damage. Application: Critical in heavy-duty feeders where nuisance trips must be minimized. Feature: Robust enclosure compatibility and NEMA protection. Business Impact: Ensures reliable operation in varied indoor environments; reduces enclosure-related failures. Application: Fits standard industrial enclosures across manufacturing floors. Feature: Comprehensive specifications and optional features. Business Impact: Optional ground fault relay, blown fuse detection, auxiliary contacts, and Kirk provisions extend protective coverage without redesign. Application: Easy to tailor for specific plant safety and control strategies, lowering total cost of ownership.
Get a Quick Quote for a Eaton CB1633B120480GRA9
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton CB1633B120480GRA9?
Enquire Now
FAQs
CB1633B120480GRA9 requires a bottom-feed configuration with three conductors and a ground connection, fitting standard switchgear footprints. Plan for 16 in depth, 24 in width, and 32 in height, with a 200 lb weight for handling during panel assembly. Ensure control power transformer is compatible with the 120 V control circuit and verify UL Listed compliance for your enclosure.
The unit is rated for 1600A with a system voltage of 480 V and a control voltage of 120 V. It is fusible and uses a single-phase capacitor trip device (SPVR) to support reliable protection. This combination supports heavy-duty protection for large feeders and motors while maintaining precise control logic in low-voltage control circuits.
Yes. With three-pole, three-wire configuration, bottom feed, and UL Listed safety, the CB1633B120480GRA9 is well-suited for motor control centers and switchgear assemblies operating at 480 V. The inclusion of SPVR and optional ground fault/deviation features enables quick fault isolation, reducing downtime in MCCs and complex switchgear arrangements.
The CB1633B120480GRA9 is UL Listed, which validates safety compliance for electrical protection devices in industrial environments. Its NEMA ratings (1, 3R, 4, 12) indicate suitability for various enclosure types and environmental conditions. These certifications help streamline procurement approvals, ensure regulatory alignment, and support safe operation in manufacturing facilities.
Maintenance focuses on periodic inspection of the fuse protection and SPVR mechanism, ensuring the capacitor trip device operates correctly. The UL Listed protection and robust construction reduce unplanned downtime, while optional ground fault relay and auxiliary contacts extend protection coverage without costly retrofits. Over time, the device improves system reliability and lowers total cost of ownership by minimizing nuisance trips.