Eaton CB4033B120480GRAX5 Pressure Switch - UL Listed
Part Number: CB4033B120480GRAX5
Quick Summary
Pressure switch CB4033B120480GRAX5 provides reliable fault protection for three-pole, 480 V industrial power systems. Downtime from mis-wiring or underspecified protection can drive maintenance costs and compromise safety margins. UL Listed, with robust NEMA ratings (1, 3R, 4, 12) and options for ground fault and auxiliary contacts, this switch meets common electrical code requirements while simplifying installation. Operators benefit from a single, high-capacity device that integrates a capacitor trip device (SPVR) and a bottom-fed design for cleaner wiring and faster service. By consolidating protection features in one enclosure, procurement gains operational consistency, and maintenance teams reduce inventory and spares while improving fault isolation and safety.
Product Information
Extended Description
CB4033B120480GRAX5 Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with no lights (trips switch),4000A,1NO-1NC,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB4033B120480GRAX5
UPC
782116950546
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
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 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 - CB4033B120480GRAX5
Feature high-capacity protection: Amperage Rating 4000 A, System voltage 480 V, and Control voltage 120 V with a 1 NO-1 NC contact configuration across three poles. Business Impact: Supports large motor loads with a single device, reducing panel footprint and integration complexity. Application: ideal for switchgear main feeders and heavy industrial protection panels. Feature flexible wiring and protection: Bottom feed and fusible configuration enable clean terminal routing and simpler field wiring; Ground fault with control transformer option and SPVR capacitor trip device enhance selective protection. Business Impact: minimizes wiring errors, improves fault discrimination, and reduces nuisance trips. Application: crucial in compact control cabinets and outdoor enclosures where space is at a premium. Feature robust certifications: UL Listed and NEMA ratings (1, 3R, 4, 12) ensure compatibility with diverse environments and compliance with industry standards. Business Impact: accelerates procurement with proven reliability and safer field deployments. Application: suitable for harsh industrial settings including outdoors and washdown areas. Feature optional protection options: Optional Ground Fault Relay, Blown Fuse Detection, auxiliary contact provisions, and SPVR capacitor trip device. Business Impact: enables tailored protection schemes and easier integration with plant safety systems. Application: recommended in critical electrical networks and code-compliant installations. Feature reliability and service: Durable bolted pressure contact mechanism minimizes arcing and wear; One-year warranty under Eaton policy. Business Impact: lowers maintenance costs and supports continuous operation. Application: essential in high-availability manufacturing environments.
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FAQs
When installing the CB4033B120480GRAX5, plan for bottom-feed wiring and confirm the fusible configuration aligns with your bus arrangement. Ensure the 1NO-1NC contact configuration is correct for your protective scheme, and route conductors to minimize heat and vibration exposure. The SPVR option should be coordinated with upstream protection and control power transformers to ensure fast, selective tripping.
Key specs include a 4000 A amperage rating, 480 V system voltage, 120 V control voltage, and a 1 NO-1 NC contact configuration across three poles. It is fusible with bottom feed, and supports ground fault options. These specs enable high-capacity protection for main feeders and motor loads, while maintaining compatibility with UL and NEMA standards.
Yes. With three-pole operation, a 4000 A rating, and a 480 V system voltage, this switch is well-suited for switchgear and motor control centers. Its bottom-feed design simplifies wiring, while the SPVR and optional ground fault features provide selective protection, reducing downtime and enhancing safety in high-demand industrial environments.
CB4033B120480GRAX5 is UL Listed and carries NEMA ratings including 1, 3R, 4, and 12. These certifications support safe operation across varied environments, from standard indoor panels to outdoor or washdown conditions, and help meet common industrial and electrical code requirements.
The device combines a high-capacity, consolidated protection solution with a warranty under Eaton policies (one year from installation or 18 months from shipment). This reduces spare parts and inventory, minimizes downtime through improved fault isolation, and lowers maintenance labor by enabling faster service and fewer compatibility issues across protect circuits.