Eaton CB4033B120208GRAX Valves & Flow Control - UL Listed
Part Number: CB4033B120208GRAX
Quick Summary
Eaton CB4033B120208GRAX is a bolted pressure contact switch for high-current motor protection in switchgear. Engineers often face nuisance trips and long fault-diagnosis times under heavy load conditions. UL Listed and compatible with NEMA 1, 3R, 4, and 12 enclosures support regulatory compliance and safe, rugged operation. The SPVR capacitor trip device and fusible configuration simplify coordination with existing protection schemes and reduce maintenance steps. This solution adds reliability to motor control circuits while integrating smoothly with Eaton's switching devices portfolio, offering measurable business value. Its bottom-feed design and three-pole topology enable straightforward installation in compact panels.
Product Information
Extended Description
CB4033B120208GRAX Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with no lights (trips switch),4000A,120V,Bottom feed,Ground fault,208V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB4033B120208GRAX
UPC
782116950706
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.
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
4000A
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
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB4033B120208GRAX
Three-pole bolted pressure contact switch with SPVR capacitor trip provides predictable, fast protection for high-current motors. Business impact: reduces nuisance trips and improves fault clearance times, translating to lower downtime in critical production lines. Application: motor control centers and large drives in continuous-process facilities benefit from reliable coordination with protective relays and control power transformers. The ground-fault option enhances personnel safety and system integrity, especially in dusty or damp environments. Bottom-feed configuration simplifies wiring in tight panels, speeding installation and reducing panel footprint. Fuse configuration supports selective coordination, enabling easier maintenance and cost control. UL Listed and NEMA-compatible enclosures ensure regulatory compliance and durable operation across harsh industrial conditions. This device integrates with Eaton Switching Devices, enabling a cohesive protection strategy across standard panels, switchgear, and downstream equipment. Common objections about complex protection schemes are addressed by offering optional features like Blown Fuse Detection and Auxiliary Contact Provisions, which streamline diagnostics and allow seamless panel modernization.
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FAQs
The CB4033B120208GRAX employs a bottom-feed, three-pole configuration that aligns with standard Eaton switchgear footprints. Begin by de-energizing the panel, verify wiring diagrams, and mount the device to a suitable enclosure section. Connect the three wires per the 208V system and ensure the control voltage is set to 120V. Use the optional auxiliary contacts and provisions as needed for signaling and interlocking. Verify grounding per your plant’s grounding scheme and test the SPVR trip function in a controlled fault scenario before commissioning.
Yes. The unit is rated for 208V system voltage and supports a 4000A amperage rating with fusible protection. Its three-pole design provides comprehensive protection for three-wire, three-phase motor circuits, and the SPVR trip device ensures capacitor-assisted tripping. This makes it well-suited for large motors in process automation, pump systems, and heavy-duty conveyors where reliable, high-current protection is critical.
SPVR stands for Single-Phase Voltage Relay with a Capacitor Trip Device. It provides a coordinated, capacitor-assisted trip that improves selectivity and reduces nuisance trips on single-phase protection within multi-phase systems. Use SPVR when protecting motors with shared feeders or when fast, reliable fault clearance is essential in switchgear assemblies, especially in facilities with variable load profiles.
The CB4033B120208GRAX is UL Listed, ensuring compliance with critical safety standards. It is designed to be compatible with NEMA-rated enclosures including NEMA 1, 3R, 4, and 12, which broadens installation options in industrial environments from clean rooms to rugged outdoor sites. These certifications and ratings help meet regulatory requirements and support safe operation in diverse applications.
With its robust SPVR trip, ground-fault option, and fusible protection, the CB4033B120208GRAX reduces unplanned downtime by improving fault detection and clearance. Its bottom-feed installation and compatibility with existing Eaton devices simplify modernization efforts. Maintenance focuses on periodic inspection of connections, verification of trip functions, and checking auxiliary contact provisions; the result is lower lifecycle costs and more predictable maintenance cycles for motor protection panels.