Eaton CB1633B120480KGRAO Pringle bolted switch - UL Listed
Part Number: CB1633B120480KGRAO
Quick Summary
Eaton pringle bolted pressure contact switch protects medium- and high-current circuits in switchgear and motor control centers. Engineers often battle nuisance trips and slow fault isolation, and this device integrates capacitor trip technology and a ground fault option to speed protection. UL Listed certification ensures electrical safety compliance across applicable standards, supporting safer installations in demanding environments. For system owners, the unit offers reliable protection, reduced downtime, and easier maintenance; its compatibility with Eaton Switching Devices catalogs and three-pole, 480 V ratings streamline procurement, stocking, and field service. This combination of protection features and OEM alignment delivers measurable business value for panel builders and end users alike.
Product Information
Extended Description
CB1633B120480KGRAO Eaton: Eaton pringle bolted pressure contact switch,Interlock, Single-phase relay with capacitor trip device (SPVR), BFD with three off lights (does not trip),1600A,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB1633B120480KGRAO
UPC
782116958283
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
Interlock, Single-phase voltage relay with capacitor trip device (SPVR), BFD with three normally off lights (does not trip)
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB1633B120480KGRAO
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: Three-pole, bottom-feed configuration with fusible protection. Business Impact: Delivers robust protection for three-phase circuits, reducing cross-phase faults and improving switchgear reliability. Application: Ideal for 480V, 3-wire feeder lines in manufacturing plants. Feature: Interlock and SPVR (Single-phase voltage relay with capacitor trip device). Business Impact: Reduces nuisance trips while maintaining fast fault clearance, minimizing unplanned downtime. Application: Suitable for control panels requiring capacitor-trip logic in industrial environments. Feature: Ground fault with control power transformer. Business Impact: Improves personnel safety and equipment protection by detecting ground faults early. Application: Critical for facilities with transformer-backed controls and shared neutral circuits. Feature: NEMA-rated enclosure compatibility. Business Impact: Enables flexible installation in varied environments from indoor to outdoor enclosures. Application: Suitable for demanding industrial settings needing reliable enclosure protection. Feature: UL Listed certification and fusible protection. Business Impact: Simplifies compliance and procurement while ensuring predictable protection. Application: Preferred for OEMs and installers aiming for validated safety standards and reliable operation.
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FAQs
To install CB1633B120480KGRAO, connect the bottom-feed conductors to the three poles per the device’s wiring diagram, ensuring correct phase sequence and secure terminations. Use fusible protection as specified and verify grounding through the ground fault option if required. Include the SPVR capacitor trip device where applicable and align with the panel’s NEMA-rated enclosure for safe field service. Follow Eaton catalog guidelines to ensure compatibility with existing switchgear and control transformers.
Key ratings include 1600 A amperage, 480 V system voltage, and three poles with fusible protection. The unit supports a capacitor trip device (SPVR) and optional ground-fault relay, enabling fast fault isolation and enhanced protective coordination in 480 V, three-wire systems. These features help minimize nuisance trips while delivering dependable performance in industrial environments.
Yes. The CB1633B120480KGRAO is designed for 480 V, three-phase distribution panels, switchgear, and motor control centers. Its three-pole, fusible configuration with optional SPVR and ground-fault features makes it suitable for demanding manufacturing applications where reliable protection and rapid fault clearance are essential for uptime and safety.
The switch is UL Listed, indicating compliance with recognized electrical safety standards for equipment used in industrial settings. This certification aids in regulatory approvals, OEM acceptance, and streamlined procurement when compliance documentation is required for panel builds and inspections.
The design emphasizes durability with fusible protection and ground-fault/SPVR options, reducing maintenance cycles and nuisance trips. With UL Listing and compatibility with Eaton Switching Devices catalogs, integration is simplified, lowering field service time and spare-parts inventory. Over time, these factors contribute to lower downtime costs and a faster return on investment for protective switchgear in control panels.