Eaton CB4033T120480GRAO Pringle bolted switch - UL Listed
Part Number: CB4033T120480GRAO
Quick Summary
CB4033T120480GRAO is a high-capacity bolted pressure contact switch for industrial switchgear protection. In demanding environments, engineers often contend with nuisance trips and slow fault clearance that drive downtime and maintenance costs. This unit is UL Listed and supports rugged NEMA configurations up to 4 and 12, with a three-pole, 480 V system voltage and a 120 V control circuit. Its top-feed, fusible design delivers reliable protection while simplifying installation in power-distribution panels. By integrating with Eaton switching devices and optional protection features, it offers a clear path to improved safety, easier compliance, and lower total cost of ownership for industrial facilities.
Product Information
Extended Description
CB4033T120480GRAO Eaton: Eaton pringle bolted pressure contact switch,Single-voltage relay with capacitor trip device (SPVR), BFD with three off lights (does not trip),4000A,120V,Top feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB4033T120480GRAO
UPC
782116949960
Product Length/Depth
17 in
Product Height
28 in
Product Width
40 in
Product Weight
390 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
4000A
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-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 - CB4033T120480GRAO
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: 4000A amperage rating with 480V system voltage enables the CB4033T120480GRAO to protect large feeders and motors, reducing fuse blows and extending equipment life in heavy-duty switchgear applications. This capability translates to fewer unplanned outages and lower repair costs in manufacturing lines and processing plants. Feature → Application: Top-feed fuse configuration and ground fault with control power transformer streamline wiring and enhance fault detection, delivering faster clears and safer maintenance work in control rooms and outdoor enclosures. Feature → Application: Single-voltage relay with capacitor trip device (SPVR) provides controlled energization and reliable trip sequencing, minimizing nuisance trips while preserving protection integrity in critical power systems. Feature → Application: Optional Ground Fault Relay, Blown Fuse Detection, and Single Phase Protection offer enhanced protection schemes for sensitive loads, reducing unplanned downtime and supporting regulatory compliance in hazardous environments. Feature → Application: UL Listing and NEMA compatibility (1, 3R, 4, 12) deliver assurance of rugged performance in factory floors, data centers, and outdoor switchyards, helping procurement teams justify lifecycle value and maintenance predictability. Feature → Application: High-quality construction and auxiliary provisions (Kirk provisions, auxiliary contacts) simplify integration with existing Eaton control architectures, accelerating installation and reducing project risk for panel builders and OEMs.
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FAQs
Follow Eaton installation guidelines for a top-feed, three-pole setup. Ensure proper wiring of the three conductors to load terminals, connect the control power transformer to the 120 V control circuit, and verify ground fault or protective accessories are properly integrated if selected. Use the provided auxiliary provisions to interface with existing Eaton control architectures.
The switch is rated for 4000A and supports a 480 V system with a 120 V control voltage. It is designed for three-pole operation with three wires, making it suitable for large power distribution panels and motor control centers.
Yes, CB4033T120480GRAO is UL Listed. It supports rugged NEMA configurations including 1, 3R, 4, and 12, enabling reliable performance in a variety of indoor and outdoor environments.
Optional features include Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, Kirk Provisions, and Auxiliary Contact Provisions. These options help tailor protection schemes to specific installations and safety requirements while enabling status indication and easier integration with control systems.
Eaton provides warranty under Selling Policy 25-000, typically one year from installation or eighteen months from shipment, whichever occurs first. For lifecycle planning, coordinate with Eaton distribution on spare parts, optional accessories, and service programs to maximize uptime.