Eaton CB3033B120480GRAX7 pressure switch - UL Listed
Part Number: CB3033B120480GRAX7
Quick Summary
The Eaton pringle bolted pressure contact switch enables reliable protection for high-current distribution in industrial facilities. A common challenge is nuisance tripping and misalignment of protective settings that disrupt production schedules. UL Listed certification ensures safety compliance, and the unit also carries robust NEMA ratings for hostile environments (NEMA 1, 3R, 4, 12). With 3,000 A capacity and 480 V system voltage paired with a 120 V control voltage, this switch supports scalable protection with straightforward integration into existing panels. This combination delivers value by reducing downtime, simplifying maintenance, and meeting industry standards while enabling reliable, low-risk protection for critical machinery.
Product Information
Extended Description
CB3033B120480GRAX7 Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with no lights (trips switch),3000A,2NO-2NC,120V,Bottom feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB3033B120480GRAX7
UPC
782116951635
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
2 NO-2 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
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
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB3033B120480GRAX7
Feature: High current capacity and multi-contact configuration. Benefit: Enables reliable protection for large feeders and switchgear with minimal voltage drop, reducing the risk of nuisance trips during peak loads. Application: Ideal for three-pole industrial distribution panels and high-amperage feeders in manufacturing environments. Long-tail keywords integrated: three-pole electrical protection, high-current switchgear, feeder protection, protection relay integration. Feature: Single-phase voltage relay with capacitor trip device (SPVR). Benefit: Fast, controlled trips that protect equipment without unnecessary shutdowns, improving uptime. Application: Suitable for applications requiring capacitor-assisted protection in single-phase circuits. Feature: Ground fault protection options via optional components. Benefit: Enhanced safety and fault detection for critical motors and machinery, helping meet safety standards. Application: Electrical rooms and motor control centers with ground fault monitoring needs. Feature: Bottom feed fusible design. Benefit: Simplified installation and wiring in cramped panels, with predictable fault clearing paths. Application: Retrofit projects and new panel builds where bottom-fed protection is preferred. Feature: UL Listed and robust NEMA ratings (1, 3R, 4, 12). Benefit: Regulatory compliance and environmental resilience across diverse industrial settings. Application: Harsh environments and code-compliant installations in process plants. Feature: 2NO-2NC contact configuration and 3-wire operation. Benefit: Flexible control logic and easy integration with existing control circuits. Application: Panel assemblies needing both normally open and normally closed contacts for sequence protection.
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FAQs
CB3033B120480GRAX7 is a three-pole switch with 2 NO-2 NC contacts and bottom-feed configuration, making it well-suited for three-pole switchgear assemblies. It supports 120 V control voltage and 480 V system voltage, enabling direct integration with common industrial panels and feeder circuits while maintaining a straightforward wiring footprint.
Key ratings include a 3000 A amperage rating, 120 V control voltage, and 480 V system voltage. The device supports fusible protection and comes with NEMA ratings suitable for multiple environments. The 2 NO-2 NC contact configuration provides flexible control logic for complex protection schemes.
Yes, the product features a single-phase voltage relay with a capacitor trip device (SPVR). This enables rapid, controlled tripping during fault events, reducing arc energy and downtime. It is especially beneficial in single-phase protection scenarios where quick fault clearance is critical.
UL Listed certification confirms safety compliance for electrical components in the intended market, while NEMA ratings (1, 3R, 4, 12) indicate compatibility with a range of environments, from indoors to rugged outdoor spaces. These certifications support regulatory compliance and safer, more durable installations in industrial settings.
Use the bottom-feed fusible design to simplify wiring in compatible panels, ensure proper ground fault wiring if the optional relay is installed, and verify control voltage compatibility (120 V) with existing controls. The high current rating and SPVR capability reduce downtime, protect expensive equipment, and improve overall return on investment through safer, more dependable protection.