Eaton CB3033B120208GRAX5 3-Pole Switch - UL Listed
Part Number: CB3033B120208GRAX5
Quick Summary
Eaton CB3033B120208GRAX5 is a bolted pressure contact switch used for high-current protection in three-phase power systems. Engineers often grapple with nuisance trips and unclear fault indications when trip logic isn’t robust or properly matched to system voltage, current, and wiring configurations. This model carries UL Listed certification and is compatible with NEMA 1, 3R, 4, and 12 enclosures, supporting safe operation across indoor and harsh environments. Designed for heavy-duty switchgear and control panels in industrial automation, it integrates with 120 V control circuits and 208 V systems to deliver reliable protection, streamlined installation, and reduced downtime in critical processes.
Product Information
Extended Description
CB3033B120208GRAX5 Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with no lights (trips switch),3000A,1NO-1NC,120V,Bottom feed,Ground fault,208V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB3033B120208GRAX5
UPC
782116951727
Product Length/Depth
22.5 in
Product Height
32 in
Product Width
40 in
Product Weight
430 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.
Contact configuration
1 NO-1 NC
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
3000A
Control voltage
120 V
NEMA rating
NEMA 1, NEMA 3R, NEMA 4, NEMA 12
Protection
Fusible
System voltage
208 V
Voltage - max
208 V
Voltage rating
208 V
Special features
Single-phase voltage relay with capacitor trip device (SPVR), BFD with no lights (trips switch)
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - CB3033B120208GRAX5
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: High current rating of 3000A with a 120 V control voltage and 208 V system voltage. Business Impact: Enables protection of large motors and feeders without undersizing protective devices, reducing the risk of transformer faults and unplanned outages. Application: Heavy-industry switchgear and motor control centers seeking robust current interruption. Feature: 1 NO-1 NC contact configuration with a charge-before-close mechanism. Business Impact: Ensures a deliberate, controlled make/break sequence to minimize arcing and wear, extending service life and improving safety. Application: Process lines and critical feeders where precise trip timing is essential. Feature: SPVR capacitor trip device and bottom feed, fusible protection. Business Impact: Improves fault detection speed and reliability while simplifying wiring, lowering maintenance complexity and spare-part inventory. Application: Low-impedance power paths in compact control panels. Feature: Ground fault option with control power transformer and optional auxiliary contact provisions. Business Impact: Enhances protection against ground faults, enabling faster diagnostics and reduced down-time through clear fault signaling. Application: Data centers and manufacturing where ground fault protection is mandatory. Feature: NEMA-rated enclosure compatibility (1, 3R, 4, 12) and UL Listed. Business Impact: Delivers regulatory compliance and environmental resilience across diverse installations, supporting easy integration into existing panel environments. Application: Industrial automation environments with demanding enclosure requirements and safety standards.
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FAQs
For bottom-feed installations, ensure correct orientation to match the 1 NO-1 NC configuration, preserve the bottom feed wiring path to minimize bending and impedance, and use the voltage ratings of 120 V control and 208 V system voltages. Verify enclosure compatibility with NEMA 1/3R/4/12 and secure the ground fault option if required.
The SPVR capacitor trip device provides a calibrated trip signal for single-phase protection within a three-pole assembly, improving selective tripping and reducing nuisance trips. This enhances reliability in feeders that experience transient disturbances, while maintaining quick interruption on fault detection.
Yes. The unit is designed to meet NEMA ratings 1, 3R, 4, and 12, enabling installation in a wide range of indoor and outdoor environments. This compatibility helps streamline panel retrofits and new builds by aligning with common enclosure standards.
Schedule periodic inspection of connections, verify correct control voltage (120 V) and system voltage (208 V), inspect fusible protection pathways, and test ground fault options if installed. Maintain clean, dry enclosure conditions to preserve UL-listed integrity and minimize arcing or corrosion under operational duty.
The 3000A rating supports large motor and feeder protection, reducing unplanned downtime from faults. Combined with reliable SPVR operation, bottom-feed installation, and UL/NEMA-compliant enclosure compatibility, maintenance costs drop, spare parts inventory is streamlined, and process throughput improves due to fewer interruptions and faster fault isolation.