Eaton CB4033T120480RAO Bolted Pressure Switch - UL Listed
Part Number: CB4033T120480RAO
Quick Summary
Eaton CB4033T120480RAO bolted pressure switch provides reliable single-phase protection for industrial power distribution and motor control centers. Facilities frequently suffer nuisance trips and costly downtime when protection is undersized or miswired; this device helps mitigate those risks. UL Listed safety certification ensures compliance in critical panels, while compatibility with NEMA enclosures 1, 3R, 4, and 12 supports harsh industrial environments. Designed for straightforward installation with top-feed wiring and a three-wire, three-pole configuration, it offers scalable protection and long-term reliability for OEMs and end users. Using this switch can reduce maintenance cycles and simplify spare-part management across distributed facilities.
Product Information
Extended Description
CB4033T120480RAO Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with three off lights (does not trip),4000A,120V,Top feed,No ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB4033T120480RAO
UPC
782116950195
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
No ground fault
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-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 - CB4033T120480RAO
Feature: 4000A amperage rating with a 480V system voltage. Impact: Enables safe interruption of high fault currents, protecting equipment and reducing downtime. Application: Ideal for large motors and high-load switchgear in manufacturing and processing facilities. Feature: Capacitor trip device (SPVR) included. Impact: Improves fault clearance speed and reduces arc energy, enhancing operator safety and system availability. Application: Critical in power distribution where nuisance tripping must be minimized and reliable protection is required. Feature: Top-feed, three-pole, three-wire configuration. Impact: Simplifies wiring, saves panel space, and speeds installation in new builds or retrofits. Application: Suitable for control panels, MCCs, and switchgear assemblies. Feature: Optional Ground Fault Relay and auxiliary contacts. Impact: Extends protection coverage and enables remote signaling for condition monitoring. Application: Beneficial in facilities with integrated safety interlocks and remote diagnostics. Feature: UL Listed with NEMA 1/3R/4/12 compatibility. Impact: Ensures regulatory compliance and durable performance in challenging environments. Application: Widely applicable across manufacturing, processing, and packaging lines requiring robust protection.
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FAQs
CB4033T120480RAO employs a top-feed fuse configuration with a three-pole, three-wire arrangement designed for straightforward panel integration. Ensure correct wiring to the 480V system and verify compatibility with your enclosure (NEMA 1/3R/4/12). The unit supports auxiliary contacts and optional ground-fault features, reducing retrofit complexity in existing MCCs.
The capacitor trip device (SPVR) is a timing and capacitor-based mechanism that initiates tripping to interrupt fault current swiftly. It lowers fault energy transfer, minimizes arcing, and helps prevent nuisance trips in circuits with capacitive charging or transient faults. This leads to safer operation, less wear on contact surfaces, and improved system uptime.
Yes. With a three-pole, three-wire topology, 480V system compatibility, and a 4000A fault-interruption rating, this switch is well-suited for motor control centers and switchgear in manufacturing, processing, and packaging environments. Its rugged enclosure compatibility and optional protection features support reliable integration into existing control architectures.
The CB4033T120480RAO is UL Listed, providing recognized safety certification for electrical protection devices. It is compatible with NEMA 1, 3R, 4, and 12 enclosures, supporting installation in a range of harsh industrial conditions. These attributes help meet regulatory and safety standards in most industrial facilities.
Eaton provides a warranty per policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. For maintenance, regular inspection of connections, trip devices, and auxiliary contacts is recommended. Keeping spare parts for top-feed switches and SPVR components minimizes downtime and supports rapid field service.