Eaton CB3033B120208GRAX Pringle bolted pressure switch - UL
Part Number: CB3033B120208GRAX
Quick Summary
Eaton CB3033B120208GRAX is a bolted pressure contact switch designed for heavy-duty motor protection in industrial panels. Facilities often battle nuisance trips, unreliable protection, and complex wiring when upgrading switchgear for high-current applications. This model carries UL Listed certification, is compatible with NEMA 1/3R/4/12 enclosures, and supports optional ground fault relay and auxiliary contact provisions. Designed for large automation and electrical distribution environments, it supports bottom-feed installations and three-pole configurations while delivering reliable performance with Eaton's warranty. For engineers and procurement teams, this design translates to reduced downtime, streamlined installation, and scalable protection that aligns with modern safety standards.
Product Information
Extended Description
CB3033B120208GRAX Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with no lights (trips switch),3000A,120V,Bottom feed,Ground fault,208V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB3033B120208GRAX
UPC
782116951734
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
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
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB3033B120208GRAX
Feature: 3000A amperage rating. Business impact: Enables reliable protection for high-current motors and feeders, reducing fuse-related interruptions and supporting future load growth. Application: Large manufacturing lines and processing plants where peak currents approach system limits. Feature: 208 V system voltage with 120 V control voltage. Business impact: Simplifies integration with common plant power architectures and control circuitry, lowering wiring complexity and wiring errors. Application: Industrial switchgear and panelboards delivering 208 V with standard 120 V controls. Feature: Three-pole, bottom feed, fusible configuration. Business impact: Improves wiring ergonomics, fault isolation, and ease of maintenance in compact switchgear footprints. Application: OEM switchgear installations and retrofit projects where bottom-feed is preferred. Feature: UL Listed and NEMA compatibility (1, 3R, 4, 12). Business impact: Ensures regulatory compliance and rugged enclosure performance in harsh environments, reducing auditing risk. Application: Food processing, chemical, and heavy manufacturing facilities with demanding IP/NEMA requirements. Feature: Optional Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, Auxiliary Contact Provisions. Business impact: Enables scalable protection architectures, faster fault diagnosis, and easier integration with protection relays and control power transformers. Application: Facility-wide protection schemes and safety-critical processes where proactive fault detection matters. Industry context: Supports SPVR and BFD with no lights for clean, unobtrusive operation in demanding automation environments.
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FAQs
Bottom-feed configurations require secure mounting, adequate clearance for three-pole terminals, and proper alignment with bottom-connected cables. Plan for crane or forklift handling given the 430 lb weight and ensure compatible enclosure access per NEMA ratings. Optional accessories such as auxiliary contacts or ground-fault provisions can be integrated during installation for future protection expansion.
The switch is rated for 3000A with a 208 V system voltage and 120 V control voltage. It supports three-pole operation with three wires and is fusible, providing reliable short-circuit protection in industrial panels. NEMA compatibility includes 1, 3R, 4, and 12 enclosure types to fit a range of installation environments.
The CB3033B120208GRAX carries UL Listed certification, indicating conformance to established safety standards for electrical equipment. It is designed for compatibility with NEMA-rated enclosures (1, 3R, 4, 12), supporting safe operation in diverse industrial settings. The product warranty and Eaton support further assist with compliance and ongoing reliability.
Yes. The design includes ground fault protection options such as Ground Fault Relay and auxiliary provisions, plus Single Phase Protection with a capacitor trip device (SPVR) and Blown Fuse Detection (BFD). These features enable enhanced fault detection and selective coordination within protection schemes for large motors and feeders.
Warranty terms are Eaton’s standard policy: one year from installation or eighteen months from shipment, whichever occurs first. Regular maintenance should focus on verifying connection integrity, monitoring protection relay inputs, and inspecting fuse elements. Availability of optional accessories (auxiliary contacts, Kirk provisions) supports scalable protection and easier brownout or fault incident analysis.